Horiba Dissolved Oxygen (DO) Pocket Tester – Measurement Solutions for Determining Oxygen Levels in Water

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as the instruction manual. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. DO220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery DO210 or DO220 handheld meter 9552-20D galvanic oxygen sensor with 2-metre cable Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers DO210-K: 3200779530 DO220-K: 3200779531 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

The high-quality multi-parameter handheld meters of the HORIBA LAQUA 200 series are suitable for use under a wide range of conditions and in direct daylight in the field, thanks to their monochrome LCD display with LED backlight. Another advantage of these devices is that the handheld meters are particularly resistant to shocks and scratches due to their special rubber coating and offer a long operating time thanks to the AA batteries with 2500 mAh. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. Confident in the quality of its products, HORIBA offers a three-year warranty on the handheld measuring devices of the LAQUA 200 series. During measurements, users are supported by instructions displayed in the form of smiley symbols. This helps prevent operating errors that could lead to implausible measurement results. Furthermore, the measuring device features only 9 buttons and no menu texts. This design helps ensure that the device remains easy to operate, even when used intermittently or by different users. Functions and Features HORIBA meters feature an electrode wear indicator, a hold function to "save" the current measured value on the display, automatic calibration functions and a self-diagnostic function. The fold-out stand on the back of the devices allows users to keep their hands free and carry out measurements easily and safely. Kit Versions for Mobile Use Instruments marked as "Kit" are supplied in a reinforced measuring case for mobile outdoor use. The case contains the replaceable measuring electrode, the corresponding cable for connecting the electrode to the device, as well as the instruction manual. If measurements of different parameters are required using different electrodes, the electrodes can simply be connected together at the upper section and then immersed in the measuring solution. DO220 Kit Version with GLP Functions Storage capacity of 1000 measurement data sets instead of 500 data sets. Measurement and calibration data are stored in compliance with GLP requirements, including date and time stamps. PC communication via optional USB cable. RS232 printer function for printing measurement data. Scope of Delivery DO210 or DO220 handheld meter 9552-20D galvanic oxygen sensor with 2-metre cable Robust measuring case Instruction manual and quick reference guide Manufacturer Article Numbers DO210-K: 3200779530 DO220-K: 3200779531 Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Thank you for your interest in our smart and individually configurable measuring instruments of the HORIBA LAQUA WQ-300 series. The high-quality digital multi-parameter handheld meters feature a large colour LCD display with LED backlight (7 cm x 5.2 cm), making them ideally suited for field use under a wide range of conditions and in direct daylight. Use our configurator to select the appropriate measuring instrument from the HORIBA WQ-300 series with 1 to 3 measuring channels, the desired measuring parameters (sensor cartridges) and the required cable length according to your individual needs. The sensor cables feature an integrated sensor receptacle and digital module. Additional measuring parameters can also be connected at a later stage using the corresponding sensor cable or carried in the measuring case as supplementary equipment. As with other HORIBA handheld meters, the devices are particularly resistant to shocks, slipping and scratches thanks to their special rubber coating. Operation requires four standard AA batteries with 2500 mAh. For greater flexibility during mobile use, the WQ-300 series can alternatively be powered by a power bank or battery pack via the integrated USB interface. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. HORIBA offers a three-year warranty on the handheld measuring instruments of the LAQUA WQ-300 series. Functions and Features During measurements, users are supported by operating instructions displayed in the form of smiley symbols. These are complemented by an LED status indicator on the sensor to help prevent operating errors and implausible measurement results. The small number of control buttons and the absence of complex, nested menus ensure that the instruments remain easy and safe to operate, even when used intermittently or by different users. Additional Functions Electrode wear indicator Measurement stability indicator on the instrument and sensor Hold function to "save" the current measured value on the display Individual measuring point identification with up to 8 characters Automatic calibration functions Integrated sensor holders Self-diagnostic function GLP functions Fold-out stand for convenient hands-free measurements Transfer of measurement data to a computer or smartphone via USB or WiFi Measuring Case for Mobile Use All handheld meters of the WQ-300 series are supplied in a reinforced measuring case for mobile outdoor use. The case provides space for the measuring instrument, electrodes and cables, as well as up to eight 60 ml bottles of buffer solutions. An integrated holder for buffer solution bottles facilitates calibration. Automatic Sensor Recognition A particular advantage of the WQ-300 series is automatic sensor recognition through sensor cables with integrated digital sensor receptacles. Information about the sensor, calibration data and measurement settings is stored in the digital sensor module and transmitted to the measuring instrument. In addition, all connected sensors can be calibrated simultaneously, as each sensor module independently stores measurement and calibration data and transmits them to the WQ-300 series measuring instrument. Analogue sensors can optionally be connected using the HORIBA BNC sensor adapter. Please contact us for further information. Available Languages German English French Spanish Portuguese Chinese Scope of Delivery WQ-300 series handheld meter in a carrying case Selected digital electrode, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptacle Instruction manual Manufacturer Article Number WQ-310-K (1 channel): 3200832605 Calibrating the Instrument pH Measurement To obtain accurate results, a two-point calibration must be carried out. The following buffer solutions are recommended: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples If the expected pH value of the sample is unknown, a three-point calibration using pH 7.00, 4.01 and 10.01 is recommended. It is recommended to begin calibration with pH 7.00. Conductivity Measurement For conductivity measurements, a single-point calibration is sufficient, for example at 1413 µS/cm. For greater accuracy, a multi-point calibration can also be performed. Important Note on the Chloride Sensor Note: If a chloride sensor is selected, it is supplied without chloride ionic strength adjuster and chloride electrode filling solution. These solutions must be purchased separately by the customer. The chloride sensor cannot be used without the required filling solution. Why We Use These Measuring Devices in Water Treatment Precise calcium control is an important element of efficient water treatment, from drinking water purification and process water management to environmental analysis. Elevated calcium concentrations can contribute to scale formation, pipe damage, increased energy consumption and disruptions in chemical processes. For these applications, we offer configurable solutions from the HORIBA LAQUA WQ series in our online shop. Available Measuring Instruments WQ310-K: Single-channel solution for targeted measurements. WQ320-K: Simultaneous measurement of two parameters, such as calcium and conductivity. WQ330-K: Three-channel measurement for complex multi-parameter analyses. Benefits for Water Treatment Reliable measurement data for monitoring and optimising water treatment systems. Digital evaluation, documented measurement results and interfaces for data transfer. Robust design and practical measuring case for mobile on-site use. Flexible combination of calcium measurements with other parameters such as pH, conductivity or redox potential. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Thank you for your interest in our smart and individually configurable measuring instruments of the HORIBA LAQUA WQ-300 series. The high-quality digital multi-parameter handheld meters feature a large colour LCD display with LED backlight (7 cm x 5.2 cm), making them ideally suited for field use under a wide range of conditions and in direct daylight. Use our configurator to select the appropriate measuring instrument from the HORIBA WQ-300 series with 1 to 3 measuring channels, the desired measuring parameters (sensor cartridges) and the required cable length according to your individual needs. The sensor cables feature an integrated sensor receptacle and digital module. Additional measuring parameters can also be connected at a later stage using the corresponding sensor cable or carried in the measuring case as supplementary equipment. As with other HORIBA handheld meters, the devices are particularly resistant to shocks, slipping and scratches thanks to their special rubber coating. Operation requires four standard AA batteries with 2500 mAh. For greater flexibility during mobile use, the WQ-300 series can alternatively be powered by a power bank or battery pack via the integrated USB interface. An IP67 certification, which confirms dust-tightness and protection against temporary immersion for up to 30 minutes at a water depth of one metre, completes the professional overall package alongside the ergonomic design and easy operation. HORIBA offers a three-year warranty on the handheld measuring instruments of the LAQUA WQ-300 series. Functions and Features During measurements, users are supported by operating instructions displayed in the form of smiley symbols. These are complemented by an LED status indicator on the sensor to help prevent operating errors and implausible measurement results. The small number of control buttons and the absence of complex, nested menus ensure that the instruments remain easy and safe to operate, even when used intermittently or by different users. Additional Functions Electrode wear indicator Measurement stability indicator on the instrument and sensor Hold function to "save" the current measured value on the display Individual measuring point identification with up to 8 characters Automatic calibration functions Integrated sensor holders Self-diagnostic function GLP functions Fold-out stand for convenient hands-free measurements Transfer of measurement data to a computer or smartphone via USB or WiFi Measuring Case for Mobile Use All handheld meters of the WQ-300 series are supplied in a reinforced measuring case for mobile outdoor use. The case provides space for the measuring instrument, electrodes and cables, as well as up to eight 60 ml bottles of buffer solutions. An integrated holder for buffer solution bottles facilitates calibration. Automatic Sensor Recognition A particular advantage of the WQ-300 series is automatic sensor recognition through sensor cables with integrated digital sensor receptacles. Information about the sensor, calibration data and measurement settings is stored in the digital sensor module and transmitted to the measuring instrument. In addition, all connected sensors can be calibrated simultaneously, as each sensor module independently stores measurement and calibration data and transmits them to the WQ-300 series measuring instrument. Analogue sensors can optionally be connected using the HORIBA BNC sensor adapter. Please contact us for further information. Available Languages German English French Spanish Portuguese Chinese Scope of Delivery WQ-300 series handheld meter in a carrying case Selected digital electrode, if applicable, and the corresponding sensor-specific cable with integrated digital sensor receptacle Instruction manual Manufacturer Article Number WQ-320-K (2 channels): 3200832606 Calibrating the Instrument pH Measurement To obtain accurate results, a two-point calibration must be carried out. The following buffer solutions are recommended: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples If the expected pH value of the sample is unknown, a three-point calibration using pH 7.00, 4.01 and 10.01 is recommended. It is recommended to begin calibration with pH 7.00. Conductivity Measurement For conductivity measurements, a single-point calibration is sufficient, for example at 1413 µS/cm. For greater accuracy, a multi-point calibration can also be performed. Important Note on the Chloride Sensor Note: If a chloride sensor is selected, it is supplied without chloride ionic strength adjuster and chloride electrode filling solution. These solutions must be purchased separately by the customer. The chloride sensor cannot be used without the required filling solution. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

Horiba WQ330-K – Your Professional 3-Channel Water Quality Meter Expandable multi-parameter system for simultaneous measurement of pH, conductivity, redox, and other water parameters The Horiba LAQUA WQ330-K is a powerful multi-channel device for advanced water analysis, both on-site and in the laboratory. With three freely configurable measurement channels, it can simultaneously record parameters such as pH, conductivity, redox potential, TDS, temperature, oxygen, ammonia, calcium, chloride, nitrate, fluoride, and potassium. Intuitive operation, automatic sensor recognition, and digital calibration ensure accurate, fast, and reproducible measurements. Flexible Multi-Parameter System for Field and Laboratory Applications The analysis kit with the Horiba WQ330-K is ideal for environmental and water body monitoring, research and teaching, as well as drinking and process water control. The large LCD display with LED backlight ensures excellent readability even in direct sunlight. Measurement data can be exported and documented via USB or wirelessly, greatly simplifying traceability and analysis. The modular system allows the device to be quickly and precisely adapted to any measurement task. It is ideal for users who need to efficiently and reliably monitor multiple water parameters. Technical Features and Key Advantages of the WQ330-K The three measurement channels of the Horiba WQ330-K enable simultaneous recording of different water parameters, reducing measurement time and allowing better evaluation of relationships between parameters. The modular sensor concept allows flexible use of digital sensors, which are automatically recognized and store their calibration history. Notably, the combination of high measurement precision, user-friendliness, and mobility makes this device stand out. Quick deployment without complicated setup, along with easy data transfer for documentation and analysis, makes the Horiba LAQUA WQ330-K an ideal solution for professional water analytics. Calibrating the instrument: pH measurement To obtain accurate results, a two-point calibration must be carried out. It is recommended that the following solutions be used: pH 7.00 and 4.01 for acidic samples pH 7.00 and 10.01 for alkaline samples Carry out a three-point calibration using pH 7.00, 4.01 and 10.01 if you do not know the expected pH value of the sample. It is recommended that you calibrate using pH 7.00 first. Conductivity measurement For a conductivity measurement, a single-point calibration is sufficient, for example at 1413 μS/cm. For greater accuracy, a multi-point calibration can also be carried out. Note: During the promotional period, the discount on accessories will be automatically deducted at the shop’s checkout when purchased together with the HORIBA WQ330 device. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required. Frequently asked questions How long is the warranty period for HORIBA analysers? The warranty period is 2 years for the 300 (WQ) series and 1 year for the F series after delivery. Where can I find suitable replacement electrodes or buffer solutions? You can find the appropriate replacement electrodes and buffer solutions in the shop under the main item at the bottom of the cross-selling section. How do I clean the probe before calibration? The sensors should be cleaned with DI water (deionised). After cleaning, wipe them with tissue paper if possible. Frequently asked questions about the promotion How long does the promotion run for? The promotion runs from 1 September 2026 to 31 December 2026. How do I get the discount on the accessories? The discount will be automatically deducted at the shop’s checkout when you purchase the HORIBA WQ330 unit at the same time.

HORIBA U-51 (10 m) – Multi-Parameter Meter for Mobile Water Analysis Monitoring Water Quality with One Measuring Instrument Reliable assessment of water quality often requires the measurement of several parameters. When these are determined individually using different measuring instruments, the effort required for measurements, documentation and evaluation increases. The HORIBA U-51 (10 m) from the U-50 series enables mobile multi-parameter measurements using a combined sensor probe. Various water parameters can be recorded within a single measurement process and displayed directly on the control unit. The instrument is particularly suitable for on-site investigations of surface waters, water quality monitoring and the inspection of water treatment processes. The U-51 version is equipped with a 10-metre sensor cable and enables the simultaneous display of up to 10 measured and calculated values. The extended cable length allows measurements at locations that are difficult to access directly, such as deeper sampling points, riverbanks, reservoirs and water treatment facilities. Measuring Parameters of the HORIBA U-51 The multi-parameter measuring instrument records important physical and chemical parameters for assessing water quality. pH value: Assessment of the acidic or alkaline characteristics of a water sample. Oxidation-Reduction Potential (ORP): Measurement of the electrochemical oxidation-reduction potential. Dissolved Oxygen (DO): Monitoring the oxygen content in water. Electrical Conductivity: Assessment of electrical conductivity as an indicator of dissolved ions. Salinity: Determination of salt content based on conductivity measurements. TDS: Determination of total dissolved solids as a calculated value. Seawater Specific Gravity: Calculated parameter for corresponding water samples. Temperature: Measurement of water temperature for the assessment and compensation of temperature-dependent parameters. Depending on the parameter, different display formats and calculated values can be shown. The U-51 version does not feature turbidity measurement. Functions and Features The HORIBA U-51 combines a multifunctional sensor probe with a portable control unit. This allows several water parameters to be recorded within a single measurement process, without requiring a separate measuring instrument for each parameter. Clear Measurement Display The control unit features a backlit monochrome graphic display on which the recorded measurement values are clearly presented. This facilitates the assessment of water quality directly at the measuring location. Data Storage and Transfer The instrument offers a storage capacity of up to 10,000 data sets. Stored measurement data can be transferred via the USB interface for further documentation and evaluation. Designed for Mobile Use The robust construction and water-protected components are designed for measurements under demanding operating conditions. The sensor probe complies with protection class IP68, while the control unit complies with protection class IP67 when the sensor cable is connected. Extended Measuring Range with a 10-Metre Cable The 10-metre sensor cable provides additional flexibility for measurements at greater distances from the control unit. It allows the sensor probe to be positioned in the water while the operator remains at a suitable and accessible location. This is particularly useful for measurements from bridges, platforms, riverbanks and other sampling locations where direct access to the water is limited. Calibration and Sensor Maintenance The integrated calibration functions support the preparation of the measuring instrument for reliable measurements. Regular calibration, cleaning and maintenance of the sensors in accordance with the manufacturer's instructions are necessary to ensure consistently meaningful results. Typical Applications The HORIBA U-51 with a 10-metre sensor cable is suitable for various tasks in water analysis and environmental monitoring. Surface Waters: Investigation of rivers, lakes and other natural water bodies. Environmental Monitoring: Measurement of important water parameters to observe changes in water quality. Industry and Process Water: Spot checks of relevant water parameters in industrial environments. Wastewater and Discharges: Supplementary on-site measurements to assess water characteristics. Research and Field Investigations: Mobile data collection for scientific and application-related investigations. Sampling at Difficult-to-Reach Locations: Water quality measurements from bridges, platforms and elevated sampling positions. Advantages of Multi-Parameter Measurement Measurement of several water parameters using a combined sensor probe. Fewer instrument changes during extensive on-site measurements. Direct display of measurement values on the portable control unit. Storage and transfer of measurement data for documentation. Robust design for mobile water investigations. 10-metre sensor cable for flexible measurements at greater distances from the control unit. Technical Information and Downloads A detailed overview of the technical features, measuring ranges, resolutions and further specifications of the HORIBA U-51 can be found under the "Specifications" tab. Additional information about the HORIBA U-50 series is available in the product brochure in the download section. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

HORIBA U-52G (10 m) – Multi-Parameter Meter with GPS, Turbidity and Water Depth Measurement Monitoring Water Quality with One Measuring Instrument Reliable assessment of water quality often requires the measurement of several parameters. When these are determined individually using different measuring instruments, the effort required for measurements, documentation and evaluation increases. The HORIBA U-52G (10 m) from the U-50 series enables mobile multi-parameter measurements using a combined sensor probe. Various water parameters can be recorded within a single measurement process and displayed directly on the control unit. The instrument is particularly suitable for on-site investigations of surface waters, water quality monitoring and the inspection of water treatment processes. The U-52G version is equipped with a 10-metre sensor cable and enables the simultaneous display of up to 11 measured and calculated values. Unlike the U-52 version, the HORIBA U-52G additionally features an integrated GPS function and water depth measurement. This allows water quality data to be assigned to a geographical measurement location and a specific depth. The integrated LED turbidity sensor also enables the measurement of water turbidity together with other relevant water quality parameters. The extended sensor cable enables measurements at deeper and difficult-to-access sampling locations. Combined with GPS and depth measurement, this supports the traceable documentation of water investigations at different locations and measurement depths. Measuring Parameters of the HORIBA U-52G The multi-parameter measuring instrument records important physical and chemical parameters for assessing water quality. pH value: Assessment of the acidic or alkaline characteristics of a water sample. Oxidation-Reduction Potential (ORP): Measurement of the electrochemical oxidation-reduction potential. Dissolved Oxygen (DO): Monitoring the oxygen content in water. Electrical Conductivity: Assessment of electrical conductivity as an indicator of dissolved ions. Salinity: Determination of salt content based on conductivity measurements. TDS: Determination of total dissolved solids as a calculated value. Seawater Specific Gravity: Calculated parameter for corresponding water samples. Temperature: Measurement of water temperature for the assessment and compensation of temperature-dependent parameters. Turbidity: Optical turbidity measurement using an LED-based sensor to assess suspended particles and changes in water clarity. Water Depth: Measurement of water depth using an integrated pressure sensor with a measuring range of 0 to 30 metres. In addition, the HORIBA U-52G features a GPS function for recording geographical position data. GPS is an additional function for assigning measurement locations and is not a physicochemical water parameter. Functions and Features The HORIBA U-52G combines a multifunctional sensor probe with a portable control unit. This allows several water parameters to be recorded within a single measurement process, without requiring a separate measuring instrument for each parameter. Integrated LED Turbidity Measurement The integrated turbidity sensor uses an LED-based optical measurement method with 30-degree forward light scattering. This enables the determination of turbidity caused by suspended particles in the water. Turbidity measurements provide useful additional information when assessing surface waters, wastewater and other water samples in which suspended solids may be present. Integrated GPS Function The HORIBA U-52G features an integrated GPS receiver for determining the geographical position of the measurement location. The location information enables the spatial assignment of recorded water quality data. This allows measurements at different sampling locations to be documented and compared in a traceable manner. This is particularly useful for environmental monitoring, water investigations and recurring measurement campaigns. GPS positioning requires adequate reception conditions. Integrated Water Depth Measurement The HORIBA U-52G features an integrated pressure sensor for determining water depth. The measuring range is 0 to 30 metres. Water depth measurement makes it possible to assign water quality parameters to a specific measurement depth. This supports the investigation of different water layers and the documentation of measurement profiles. With this version, the 10-metre sensor cable limits the practically achievable measurement depth. The measuring range of the integrated depth sensor must therefore not be equated with the actual achievable operating depth. Clear Measurement Display The control unit features a backlit monochrome graphic display on which the recorded measurement values are clearly presented. This facilitates the assessment of water quality directly at the measuring location. Data Storage and Transfer The instrument offers a storage capacity of up to 10,000 data sets. Stored measurement data can be transferred via the USB interface for further documentation and evaluation. Designed for Mobile Use The robust construction and water-protected components are designed for measurements under demanding operating conditions. The sensor probe complies with protection class IP68, while the control unit complies with protection class IP67 when the sensor cable is connected. Extended Applications with a 10-Metre Cable The 10-metre sensor cable allows the sensor probe to be positioned at a greater distance from the control unit. The operator can carry out measurements from a suitable and easily accessible location. This is particularly useful for measurements from bridges, jetties, platforms, riverbanks and other sampling locations where direct access to the water is limited. The longer cable also enables measurements at different water depths. Water parameters can therefore be recorded at various measuring points within a body of water and assigned to the corresponding measurement depth to investigate possible differences in water quality. Calibration and Sensor Maintenance The integrated calibration functions support the preparation of the measuring instrument for reliable measurements. Regular calibration, cleaning and maintenance of the sensors in accordance with the manufacturer's instructions are necessary to ensure consistently meaningful results. Typical Applications The HORIBA U-52G with a 10-metre sensor cable is suitable for various tasks in water analysis and environmental monitoring. Surface Waters: Investigation of rivers, lakes and other natural water bodies, including turbidity assessment. Environmental Monitoring: Measurement of important water parameters with geographical assignment of measurement locations. Industry and Process Water: Spot checks of relevant water parameters in industrial environments. Wastewater and Discharges: Supplementary on-site measurements of water characteristics and turbidity. Research and Field Investigations: Mobile data collection for scientific and application-related investigations. Location-Based Water Monitoring: Documentation of measurement values at geographically defined sampling locations. Water Investigations with Depth Assignment: Recording of water parameters and the corresponding measurement depth within the practically achievable operating depth. Difficult-to-Access Sampling Locations: Water quality measurements from bridges, platforms and elevated sampling positions. Recurring Measurement Campaigns: Comparison of water quality data at different measurement locations and depths across multiple investigations. Advantages of Multi-Parameter Measurement Measurement of several water parameters using a combined sensor probe. Integrated LED turbidity measurement for additional assessment of water clarity. GPS function for geographical assignment of measurement locations. Integrated water depth measurement for assigning measurement values to a specific water depth. Fewer instrument changes during extensive on-site measurements. Direct display of measurement values on the portable control unit. Storage and transfer of measurement data for documentation. Robust design for mobile water investigations. 10-metre sensor cable for flexible measurements at deeper and difficult-to-access sampling locations. Technical Information and Downloads A detailed overview of the technical features, measuring ranges, resolutions and further specifications of the HORIBA U-52G can be found under the "Specifications" tab. Additional information about the HORIBA U-50 series is available in the product brochure in the download section. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

HORIBA U-52 (30 m) – Multi-Parameter Meter with Turbidity Measurement for Mobile Water Analysis Monitoring Water Quality with One Measuring Instrument Reliable assessment of water quality often requires the measurement of several parameters. When these are determined individually using different measuring instruments, the effort required for measurements, documentation and evaluation increases. The HORIBA U-52 (30 m) from the U-50 series enables mobile multi-parameter measurements using a combined sensor probe. Various water parameters can be recorded within a single measurement process and displayed directly on the control unit. The instrument is particularly suitable for on-site investigations of surface waters, water quality monitoring and the inspection of water treatment processes. The U-52 version is equipped with a 30-metre sensor cable and enables the simultaneous display of up to 11 measured and calculated values. Unlike the U-51 version, the HORIBA U-52 additionally features an integrated LED turbidity sensor. This allows the turbidity of a water sample to be assessed together with other relevant water quality parameters. The extended cable length expands the range of applications for measurements at deeper or difficult-to-access sampling locations. This is particularly useful when investigating lakes, reservoirs, harbour basins and other bodies of water where the sensor probe must be positioned at a greater distance from the control unit. Measuring Parameters of the HORIBA U-52 The multi-parameter measuring instrument records important physical and chemical parameters for assessing water quality. pH value: Assessment of the acidic or alkaline characteristics of a water sample. Oxidation-Reduction Potential (ORP): Measurement of the electrochemical oxidation-reduction potential. Dissolved Oxygen (DO): Monitoring the oxygen content in water. Electrical Conductivity: Assessment of electrical conductivity as an indicator of dissolved ions. Salinity: Determination of salt content based on conductivity measurements. TDS: Determination of total dissolved solids as a calculated value. Seawater Specific Gravity: Calculated parameter for corresponding water samples. Temperature: Measurement of water temperature for the assessment and compensation of temperature-dependent parameters. Turbidity: Measurement of water turbidity using an LED-based optical sensor to assess suspended particles and changes in water clarity. Depending on the parameter, different display formats and calculated values can be shown. The U-52 version includes turbidity measurement but does not feature GPS or water depth measurement. Functions and Features The HORIBA U-52 combines a multifunctional sensor probe with a portable control unit. This allows several water parameters to be recorded within a single measurement process, without requiring a separate measuring instrument for each parameter. Integrated LED Turbidity Measurement The integrated turbidity sensor uses an LED-based optical measurement method with forward light scattering. This enables the determination of turbidity caused by suspended particles in the water. Turbidity measurements provide useful additional information when assessing surface waters, wastewater and other water samples in which suspended solids may be present. Clear Measurement Display The control unit features a backlit monochrome graphic display on which the recorded measurement values are clearly presented. This facilitates the assessment of water quality directly at the measuring location. Data Storage and Transfer The instrument offers a storage capacity of up to 10,000 data sets. Stored measurement data can be transferred via the USB interface for further documentation and evaluation. Designed for Mobile Use The robust construction and water-protected components are designed for measurements under demanding operating conditions. The sensor probe complies with protection class IP68, while the control unit complies with protection class IP67 when the sensor cable is connected. Extended Applications with a 30-Metre Cable The 30-metre sensor cable allows the sensor probe to be positioned at a greater distance from the control unit. The operator can carry out measurements from a suitable and easily accessible location. This is particularly useful for measurements from bridges, jetties, platforms, riverbanks and other sampling locations where direct access to the water is limited. The longer cable also enables measurements at different water depths. Water parameters can therefore be recorded at various measuring points within a body of water to investigate possible differences in water quality. However, automatic water depth measurement is not included in the functions of the U-52. The actual measuring depth depends on the respective operating conditions and the manufacturer's specifications. Calibration and Sensor Maintenance The integrated calibration functions support the preparation of the measuring instrument for reliable measurements. Regular calibration, cleaning and maintenance of the sensors in accordance with the manufacturer's instructions are necessary to ensure consistently meaningful results. Typical Applications The HORIBA U-52 with a 30-metre sensor cable is suitable for various tasks in water analysis and environmental monitoring. Surface Waters: Investigation of rivers, lakes and other natural water bodies, including turbidity assessment. Environmental Monitoring: Measurement of important water parameters to observe changes in water quality. Industry and Process Water: Spot checks of relevant water parameters in industrial environments. Wastewater and Discharges: Supplementary on-site measurements of water characteristics and turbidity. Research and Field Investigations: Mobile data collection for scientific and application-related investigations. Measurements at Deeper Sampling Locations: Investigation of water parameters at different water depths, for example in lakes, reservoirs or harbour basins. Difficult-to-Access Sampling Locations: Water quality and turbidity measurements from bridges, platforms and elevated sampling positions. Advantages of Multi-Parameter Measurement Measurement of several water parameters using a combined sensor probe. Integrated LED turbidity measurement for additional assessment of water clarity. Fewer instrument changes during extensive on-site measurements. Direct display of measurement values on the portable control unit. Storage and transfer of measurement data for documentation. Robust design for mobile water investigations. 30-metre sensor cable for flexible measurements at deeper and difficult-to-access sampling locations. Technical Information and Downloads A detailed overview of the technical features, measuring ranges, resolutions and further specifications of the HORIBA U-52 can be found under the "Specifications" tab. Additional information about the HORIBA U-50 series is available in the product brochure in the download section. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

HORIBA U-52 (10 m) – Multiparameter-Messgerät mit Trübungsmessung zur mobilen Wasseranalyse Wasserqualität mit einem Messgerät überwachen Die zuverlässige Beurteilung der Wasserqualität erfordert häufig die Erfassung mehrerer Messparameter. Werden diese einzeln mit unterschiedlichen Messgeräten bestimmt, erhöht sich der Aufwand für Messungen, Dokumentation und Auswertung. Das HORIBA U-52 (10 m) aus der U-50 Serie ermöglicht die mobile Multiparametermessung mit einer kombinierten Sensorsonde. Verschiedene Wasserparameter lassen sich innerhalb eines Messvorgangs erfassen und direkt auf der Steuereinheit anzeigen. Das Gerät eignet sich insbesondere für Vor-Ort-Untersuchungen von Oberflächengewässern, die Überwachung der Wasserqualität und die Kontrolle wassertechnischer Prozesse. Die Ausführung U-52 ist mit einem 10 Meter langen Sensorkabel ausgestattet und ermöglicht die gleichzeitige Anzeige von bis zu 11 Mess- und Berechnungswerten. Im Unterschied zur U-51-Ausführung verfügt das HORIBA U-52 zusätzlich über einen integrierten LED-Trübungssensor. Dadurch kann die Trübung einer Wasserprobe gemeinsam mit weiteren relevanten Wasserqualitätsparametern beurteilt werden. Die verlängerte Kabellänge ermöglicht Messungen an tiefer gelegenen oder schwer zugänglichen Probenahmestellen, beispielsweise von Brücken, Stegen, Plattformen oder Flussufern aus. Messparameter des HORIBA U-52 Das Multiparameter-Messgerät erfasst wichtige physikalische und chemische Kenngrößen zur Beurteilung der Wasserqualität. pH-Wert: Beurteilung des sauren oder alkalischen Charakters einer Wasserprobe. Redoxpotenzial (ORP): Erfassung des elektrochemischen Oxidations- und Reduktionspotenzials. Gelöster Sauerstoff (DO): Überwachung des Sauerstoffgehalts im Wasser. Elektrische Leitfähigkeit: Bewertung der elektrischen Leitfähigkeit als Indikator für gelöste Ionen. Salzgehalt: Bestimmung des Salzgehalts auf Grundlage der Leitfähigkeitsmessung. TDS: Ermittlung der gesamten gelösten Feststoffe als berechneter Wert. Spezifisches Gewicht von Meerwasser: Berechneter Kennwert für entsprechende Wasserproben. Temperatur: Erfassung der Wassertemperatur zur Beurteilung und Kompensation temperaturabhängiger Messgrößen. Trübung: Messung der Wassertrübung mithilfe eines LED-basierten optischen Sensors zur Beurteilung suspendierter Partikel und Veränderungen der Wasserklarheit. Je nach Messgröße können unterschiedliche Darstellungsformen und berechnete Werte angezeigt werden. Die U-52-Ausführung verfügt über eine Trübungsmessung, jedoch nicht über eine GPS-Funktion oder Wassertiefenmessung. Funktionen und Eigenschaften Das HORIBA U-52 kombiniert eine multifunktionale Sensorsonde mit einer tragbaren Steuereinheit. Dadurch können mehrere Wasserparameter innerhalb eines Messvorgangs erfasst werden, ohne für jeden Parameter ein separates Messgerät einsetzen zu müssen. Integrierte LED-Trübungsmessung Der integrierte Trübungssensor nutzt ein LED-basiertes optisches Messverfahren mit Vorwärtslichtstreuung. Dadurch lässt sich die durch suspendierte Partikel verursachte Trübung im Wasser bestimmen. Trübungsmessungen liefern zusätzliche Informationen bei der Beurteilung von Oberflächengewässern, Abwasser und weiteren Wasserproben, in denen Schwebstoffe vorhanden sein können. Übersichtliche Messwertanzeige Die Steuereinheit verfügt über ein beleuchtetes monochromes Grafikdisplay, auf dem die erfassten Messwerte übersichtlich dargestellt werden. Dies erleichtert die Beurteilung der Wasserqualität direkt am Messort. Messwertspeicherung und Datenübertragung Das Gerät bietet eine Speicherkapazität von bis zu 10.000 Datensätzen. Über die USB-Schnittstelle können gespeicherte Messdaten zur weiteren Dokumentation und Auswertung übertragen werden. Für den mobilen Einsatz entwickelt Die robuste Konstruktion und die wassergeschützten Komponenten sind auf Messungen unter anspruchsvollen Einsatzbedingungen ausgelegt. Die Sensorsonde entspricht der Schutzart IP68, die Steuereinheit bei angeschlossenem Sensorkabel der Schutzart IP67. Erweiterte Einsatzmöglichkeiten mit 10 Meter Kabel Das 10 Meter lange Sensorkabel ermöglicht die Positionierung der Sensorsonde in größerer Entfernung von der Steuereinheit. Der Anwender kann die Messung von einem geeigneten und gut zugänglichen Standort aus durchführen. Dies ist insbesondere bei Messungen von Brücken, Stegen, Plattformen, Flussufern und anderen Probenahmestellen hilfreich, an denen der direkte Zugang zum Wasser eingeschränkt ist. Auch Messungen in unterschiedlichen Wassertiefen sind durch das längere Sensorkabel möglich. Eine automatische Erfassung der Wassertiefe gehört jedoch nicht zum Funktionsumfang des U-52. Kalibrierung und Sensorwartung Die integrierten Kalibrierfunktionen unterstützen die Vorbereitung des Messgerätes für zuverlässige Messungen. Für dauerhaft aussagekräftige Ergebnisse sind die regelmäßige Kalibrierung, Reinigung und Wartung der Sensoren entsprechend den Herstellervorgaben erforderlich. Typische Anwendungsbereiche Das HORIBA U-52 mit 10 Meter Sensorkabel eignet sich für unterschiedliche Aufgaben in der Wasseranalytik und Umweltüberwachung. Oberflächengewässer: Untersuchung von Flüssen, Seen und weiteren natürlichen Gewässern einschließlich der Trübungsbeurteilung. Umweltmonitoring: Erfassung wichtiger Wasserparameter zur Beobachtung von Veränderungen der Wasserqualität. Industrie und Prozesswasser: Stichprobenartige Kontrolle relevanter Wasserparameter im betrieblichen Umfeld. Abwasser und Einleitungen: Ergänzende Vor-Ort-Messungen zur Beurteilung der Wasserbeschaffenheit und Trübung. Forschung und Felduntersuchungen: Mobile Datenerfassung für wissenschaftliche und anwendungsbezogene Untersuchungen. Schwer zugängliche Probenahmestellen: Wasserqualitäts- und Trübungsmessungen von Brücken, Plattformen und erhöhten Probenahmepositionen. Vorteile der Multiparametermessung Erfassung mehrerer Wasserparameter mit einer kombinierten Sensorsonde. Integrierte LED-Trübungsmessung zur zusätzlichen Beurteilung der Wasserklarheit. Weniger Gerätewechsel bei umfangreichen Vor-Ort-Messungen. Direkte Anzeige der Messwerte auf der tragbaren Steuereinheit. Speicherung und Übertragung von Messdaten zur Dokumentation. Robuste Ausführung für mobile Wasseruntersuchungen. 10 Meter Sensorkabel für flexible Messungen an schwer zugänglichen Probenahmestellen. Technische Informationen und Downloads Eine detaillierte Übersicht der technischen Eigenschaften, Messbereiche, Auflösungen und weiteren Spezifikationen des HORIBA U-52 finden Sie unter dem Reiter „Spezifikationen“. Ergänzende Informationen zur HORIBA U-50 Serie stehen Ihnen im Produktflyer im Downloadbereich zur Verfügung. Hinweis zum Lieferumfang: Ab November 2026 werden HORIBA Produkte ohne Batterien ausgeliefert. Bereits vorhandene Lagerbestände können gegebenenfalls noch Batterien enthalten. Bei Neuware sind Batterien nicht mehr im Lieferumfang enthalten und müssen bei Bedarf separat erworben werden.

HORIBA U-52G (2 m) – Multi-Parameter Meter with GPS, Turbidity and Water Depth Measurement Monitoring Water Quality with One Measuring Instrument Reliable assessment of water quality often requires the measurement of several parameters. When these are determined individually using different measuring instruments, the effort required for measurements, documentation and evaluation increases. The HORIBA U-52G (2 m) from the U-50 series enables mobile multi-parameter measurements using a combined sensor probe. Various water parameters can be recorded within a single measurement process and displayed directly on the control unit. The instrument is particularly suitable for on-site investigations of surface waters, water quality monitoring and the inspection of water treatment processes. The U-52G version is equipped with a 2-metre sensor cable and enables the simultaneous display of up to 11 measured and calculated values. Unlike the U-52 version, the HORIBA U-52G additionally features an integrated GPS function and water depth measurement. This allows water quality data to be assigned to a geographical measurement location and a specific depth. The integrated LED turbidity sensor also enables the measurement of water turbidity together with other relevant water quality parameters. The combination of multi-parameter measurement, GPS and water depth recording supports the traceable documentation of water investigations at different sampling locations. Measuring Parameters of the HORIBA U-52G The multi-parameter measuring instrument records important physical and chemical parameters for assessing water quality. pH value: Assessment of the acidic or alkaline characteristics of a water sample. Oxidation-Reduction Potential (ORP): Measurement of the electrochemical oxidation-reduction potential. Dissolved Oxygen (DO): Monitoring the oxygen content in water. Electrical Conductivity: Assessment of electrical conductivity as an indicator of dissolved ions. Salinity: Determination of salt content based on conductivity measurements. TDS: Determination of total dissolved solids as a calculated value. Seawater Specific Gravity: Calculated parameter for corresponding water samples. Temperature: Measurement of water temperature for the assessment and compensation of temperature-dependent parameters. Turbidity: Optical turbidity measurement using an LED-based sensor to assess suspended particles and changes in water clarity. Water Depth: Measurement of water depth using an integrated pressure sensor with a measuring range of 0 to 30 metres. In addition, the HORIBA U-52G features a GPS function for recording geographical position data. GPS is an additional function for assigning measurement locations and is not a physicochemical water parameter. Functions and Features The HORIBA U-52G combines a multifunctional sensor probe with a portable control unit. This allows several water parameters to be recorded within a single measurement process, without requiring a separate measuring instrument for each parameter. Integrated LED Turbidity Measurement The integrated turbidity sensor uses an LED-based optical measurement method with 30-degree forward light scattering. This enables the determination of turbidity caused by suspended particles in the water. Turbidity measurements provide useful additional information when assessing surface waters, wastewater and other water samples in which suspended solids may be present. Integrated GPS Function The HORIBA U-52G features an integrated GPS receiver for determining the geographical position of the measurement location. The location information enables the spatial assignment of recorded water quality data. This allows measurements at different sampling locations to be documented and compared in a traceable manner. This is particularly useful for environmental monitoring, water investigations and recurring measurement campaigns. GPS positioning requires adequate reception conditions. Integrated Water Depth Measurement The HORIBA U-52G features an integrated pressure sensor for determining water depth. The measuring range is 0 to 30 metres. Water depth measurement makes it possible to assign water quality parameters to a specific measurement depth. This supports the investigation of different water layers and the documentation of measurement profiles. With this version, the 2-metre sensor cable limits the practically achievable measurement depth. The measuring range of the integrated depth sensor must therefore not be equated with the actual achievable operating depth. Clear Measurement Display The control unit features a backlit monochrome graphic display on which the recorded measurement values are clearly presented. This facilitates the assessment of water quality directly at the measuring location. Data Storage and Transfer The instrument offers a storage capacity of up to 10,000 data sets. Stored measurement data can be transferred via the USB interface for further documentation and evaluation. Designed for Mobile Use The robust construction and water-protected components are designed for measurements under demanding operating conditions. The sensor probe complies with protection class IP68, while the control unit complies with protection class IP67 when the sensor cable is connected. Flexible Measurements with a 2-Metre Cable The 2-metre sensor cable allows the sensor probe to be positioned directly in the water while the operator controls the measurement from a nearby location. This configuration is particularly suitable for accessible sampling points, shallow water investigations and routine on-site measurements. Calibration and Sensor Maintenance The integrated calibration functions support the preparation of the measuring instrument for reliable measurements. Regular calibration, cleaning and maintenance of the sensors in accordance with the manufacturer's instructions are necessary to ensure consistently meaningful results. Typical Applications The HORIBA U-52G with a 2-metre sensor cable is suitable for various tasks in water analysis and environmental monitoring. Surface Waters: Investigation of rivers, lakes and other natural water bodies, including turbidity assessment. Environmental Monitoring: Measurement of important water parameters with geographical assignment of measurement locations. Industry and Process Water: Spot checks of relevant water parameters in industrial environments. Wastewater and Discharges: Supplementary on-site measurements of water characteristics and turbidity. Research and Field Investigations: Mobile data collection for scientific and application-related investigations. Location-Based Water Monitoring: Documentation of measurement values at geographically defined sampling locations. Water Investigations with Depth Assignment: Recording of water parameters and the corresponding measurement depth within the practically achievable operating depth. Recurring Measurement Campaigns: Comparison of water quality data at different measurement locations across multiple investigations. Advantages of Multi-Parameter Measurement Measurement of several water parameters using a combined sensor probe. Integrated LED turbidity measurement for additional assessment of water clarity. GPS function for geographical assignment of measurement locations. Integrated water depth measurement for assigning measurement values to a specific water depth. Fewer instrument changes during extensive on-site measurements. Direct display of measurement values on the portable control unit. Storage and transfer of measurement data for documentation. Robust design for mobile water investigations. 2-metre sensor cable for flexible measurements at accessible sampling locations. Technical Information and Downloads A detailed overview of the technical features, measuring ranges, resolutions and further specifications of the HORIBA U-52G can be found under the "Specifications" tab. Additional information about the HORIBA U-50 series is available in the product brochure in the download section. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

HORIBA U-52G (30 m) – Multi-Parameter Meter with GPS, Turbidity and Water Depth Measurement Monitoring Water Quality with One Measuring Instrument Reliable assessment of water quality often requires the measurement of several parameters. When these are determined individually using different measuring instruments, the effort required for measurements, documentation and evaluation increases. The HORIBA U-52G (30 m) from the U-50 series enables mobile multi-parameter measurements using a combined sensor probe. Various water parameters can be recorded within a single measurement process and displayed directly on the control unit. The instrument is particularly suitable for on-site investigations of surface waters, water quality monitoring and the inspection of water treatment processes. The U-52G version is equipped with a 30-metre sensor cable and enables the simultaneous display of up to 11 measured and calculated values. Unlike the U-52 version, the HORIBA U-52G additionally features an integrated GPS function and water depth measurement. This allows water quality data to be assigned to a geographical measurement location and a specific depth. The integrated LED turbidity sensor also enables the measurement of water turbidity together with other relevant water quality parameters. The extended sensor cable enables measurements at greater water depths and difficult-to-access sampling locations. Combined with GPS and depth measurement, this supports the traceable documentation of water investigations at different locations and measurement depths. Measuring Parameters of the HORIBA U-52G The multi-parameter measuring instrument records important physical and chemical parameters for assessing water quality. pH value: Assessment of the acidic or alkaline characteristics of a water sample. Oxidation-Reduction Potential (ORP): Measurement of the electrochemical oxidation-reduction potential. Dissolved Oxygen (DO): Monitoring the oxygen content in water. Electrical Conductivity: Assessment of electrical conductivity as an indicator of dissolved ions. Salinity: Determination of salt content based on conductivity measurements. TDS: Determination of total dissolved solids as a calculated value. Seawater Specific Gravity: Calculated parameter for corresponding water samples. Temperature: Measurement of water temperature for the assessment and compensation of temperature-dependent parameters. Turbidity: Optical turbidity measurement using an LED-based sensor to assess suspended particles and changes in water clarity. Water Depth: Measurement of water depth using an integrated pressure sensor with a measuring range of 0 to 30 metres. In addition, the HORIBA U-52G features a GPS function for recording geographical position data. GPS is an additional function for assigning measurement locations and is not a physicochemical water parameter. Functions and Features The HORIBA U-52G combines a multifunctional sensor probe with a portable control unit. This allows several water parameters to be recorded within a single measurement process, without requiring a separate measuring instrument for each parameter. Integrated LED Turbidity Measurement The integrated turbidity sensor uses an LED-based optical measurement method with 30-degree forward light scattering. This enables the determination of turbidity caused by suspended particles in the water. Turbidity measurements provide useful additional information when assessing surface waters, wastewater and other water samples in which suspended solids may be present. Integrated GPS Function The HORIBA U-52G features an integrated GPS receiver for determining the geographical position of the measurement location. The location information enables the spatial assignment of recorded water quality data. This allows measurements at different sampling locations to be documented and compared in a traceable manner. This is particularly useful for environmental monitoring, water investigations and recurring measurement campaigns. GPS positioning requires adequate reception conditions. Integrated Water Depth Measurement The HORIBA U-52G features an integrated pressure sensor for determining water depth. The measuring range is 0 to 30 metres. Water depth measurement makes it possible to assign water quality parameters to a specific measurement depth. This supports the investigation of different water layers and the documentation of measurement profiles. The 30-metre sensor cable enables the use of the depth measurement range under suitable operating conditions. The actual achievable measurement depth depends on local conditions, cable routing and the manufacturer's specifications. Clear Measurement Display The control unit features a backlit monochrome graphic display on which the recorded measurement values are clearly presented. This facilitates the assessment of water quality directly at the measuring location. Data Storage and Transfer The instrument offers a storage capacity of up to 10,000 data sets. Stored measurement data can be transferred via the USB interface for further documentation and evaluation. Designed for Mobile Use The robust construction and water-protected components are designed for measurements under demanding operating conditions. The sensor probe complies with protection class IP68, while the control unit complies with protection class IP67 when the sensor cable is connected. Extended Applications with a 30-Metre Cable The 30-metre sensor cable allows the sensor probe to be positioned at a greater distance from the control unit. The operator can carry out measurements from a suitable and easily accessible location. This is particularly useful for measurements from bridges, jetties, platforms, riverbanks and other sampling locations where direct access to the water is limited. The longer cable also enables measurements at different water depths. Water parameters can therefore be recorded at various measuring points within a body of water and assigned to the corresponding measurement depth to investigate possible differences in water quality. Calibration and Sensor Maintenance The integrated calibration functions support the preparation of the measuring instrument for reliable measurements. Regular calibration, cleaning and maintenance of the sensors in accordance with the manufacturer's instructions are necessary to ensure consistently meaningful results. Typical Applications The HORIBA U-52G with a 30-metre sensor cable is suitable for various tasks in water analysis and environmental monitoring. Surface Waters: Investigation of rivers, lakes and other natural water bodies, including turbidity assessment. Environmental Monitoring: Measurement of important water parameters with geographical assignment of measurement locations. Industry and Process Water: Spot checks of relevant water parameters in industrial environments. Wastewater and Discharges: Supplementary on-site measurements of water characteristics and turbidity. Research and Field Investigations: Mobile data collection for scientific and application-related investigations. Location-Based Water Monitoring: Documentation of measurement values at geographically defined sampling locations. Water Investigations with Depth Assignment: Recording of water parameters and the corresponding measurement depth within the practically achievable operating depth. Difficult-to-Access Sampling Locations: Water quality measurements from bridges, platforms and elevated sampling positions. Recurring Measurement Campaigns: Comparison of water quality data at different measurement locations and depths across multiple investigations. Advantages of Multi-Parameter Measurement Measurement of several water parameters using a combined sensor probe. Integrated LED turbidity measurement for additional assessment of water clarity. GPS function for geographical assignment of measurement locations. Integrated water depth measurement for assigning measurement values to a specific water depth. Fewer instrument changes during extensive on-site measurements. Direct display of measurement values on the portable control unit. Storage and transfer of measurement data for documentation. Robust design for mobile water investigations. 30-metre sensor cable for flexible measurements at greater water depths and difficult-to-access sampling locations. Technical Information and Downloads A detailed overview of the technical features, measuring ranges, resolutions and further specifications of the HORIBA U-52G can be found under the "Specifications" tab. Additional information about the HORIBA U-50 series is available in the product brochure in the download section. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

HORIBA U-52 (2 m) – Multi-Parameter Meter with Turbidity Measurement for Mobile Water Analysis Monitoring Water Quality with One Measuring Instrument Reliable assessment of water quality often requires the measurement of several parameters. When these are determined individually using different measuring instruments, the effort required for measurements, documentation and evaluation increases. The HORIBA U-52 (2 m) from the U-50 series enables mobile multi-parameter measurements using a combined sensor probe. Various water parameters can be recorded within a single measurement process and displayed directly on the control unit. The instrument is particularly suitable for on-site investigations of surface waters, water quality monitoring and the inspection of water treatment processes. The U-52 version is equipped with a 2-metre sensor cable and enables the simultaneous display of up to 11 measured and calculated values. Unlike the U-51 version, the HORIBA U-52 additionally features an integrated LED turbidity sensor. This allows the turbidity of a water sample to be assessed together with other relevant water quality parameters. Measuring Parameters of the HORIBA U-52 The multi-parameter measuring instrument records important physical and chemical parameters for assessing water quality. pH value: Assessment of the acidic or alkaline characteristics of a water sample. Oxidation-Reduction Potential (ORP): Measurement of the electrochemical oxidation-reduction potential. Dissolved Oxygen (DO): Monitoring the oxygen content in water. Electrical Conductivity: Assessment of electrical conductivity as an indicator of dissolved ions. Salinity: Determination of salt content based on conductivity measurements. TDS: Determination of total dissolved solids as a calculated value. Seawater Specific Gravity: Calculated parameter for corresponding water samples. Temperature: Measurement of water temperature for the assessment and compensation of temperature-dependent parameters. Turbidity: Measurement of water turbidity using an LED-based optical sensor to assess suspended particles and changes in water clarity. Depending on the parameter, different display formats and calculated values can be shown. The U-52 version includes turbidity measurement but does not feature GPS or water depth measurement. Functions and Features The HORIBA U-52 combines a multifunctional sensor probe with a portable control unit. This allows several water parameters to be recorded within a single measurement process, without requiring a separate measuring instrument for each parameter. Integrated LED Turbidity Measurement The integrated turbidity sensor uses an LED-based optical measurement method with forward light scattering. This enables the determination of turbidity caused by suspended particles in the water. Turbidity measurements provide useful additional information when assessing surface waters, wastewater and other water samples in which suspended solids may be present. Clear Measurement Display The control unit features a backlit monochrome graphic display on which the recorded measurement values are clearly presented. This facilitates the assessment of water quality directly at the measuring location. Data Storage and Transfer The instrument offers a storage capacity of up to 10,000 data sets. Stored measurement data can be transferred via the USB interface for further documentation and evaluation. Designed for Mobile Use The robust construction and water-protected components are designed for measurements under demanding operating conditions. The sensor probe complies with protection class IP68, while the control unit complies with protection class IP67 when the sensor cable is connected. Flexible Measurements with a 2-Metre Cable The 2-metre sensor cable allows the sensor probe to be positioned directly in the water while the operator controls the measurement from a nearby location. This configuration is particularly suitable for accessible sampling points, shallow water investigations and routine on-site measurements. Calibration and Sensor Maintenance The integrated calibration functions support the preparation of the measuring instrument for reliable measurements. Regular calibration, cleaning and maintenance of the sensors in accordance with the manufacturer's instructions are necessary to ensure consistently meaningful results. Typical Applications The HORIBA U-52 with a 2-metre sensor cable is suitable for various tasks in water analysis and environmental monitoring. Surface Waters: Investigation of rivers, lakes and other natural water bodies, including turbidity assessment. Environmental Monitoring: Measurement of important water parameters to observe changes in water quality. Industry and Process Water: Spot checks of relevant water parameters in industrial environments. Wastewater and Discharges: Supplementary on-site measurements of water characteristics and turbidity. Research and Field Investigations: Mobile data collection for scientific and application-related investigations. Water Quality and Turbidity Monitoring: Combined assessment of physical and chemical water parameters at accessible sampling locations. Advantages of Multi-Parameter Measurement Measurement of several water parameters using a combined sensor probe. Integrated LED turbidity measurement for additional assessment of water clarity. Fewer instrument changes during extensive on-site measurements. Direct display of measurement values on the portable control unit. Storage and transfer of measurement data for documentation. Robust design for mobile water investigations. 2-metre sensor cable for flexible measurements on site. Technical Information and Downloads A detailed overview of the technical features, measuring ranges, resolutions and further specifications of the HORIBA U-52 can be found under the "Specifications" tab. Additional information about the HORIBA U-50 series is available in the product brochure in the download section. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

HORIBA U-51 (2 m) – Multi-Parameter Meter for Mobile Water Analysis Monitoring Water Quality with One Measuring Instrument Reliable assessment of water quality often requires the measurement of several parameters. When these are determined individually using different measuring instruments, the effort required for measurements, documentation and evaluation increases. The HORIBA U-51 (2 m) from the U-50 series enables mobile multi-parameter measurements using a combined sensor probe. Various water parameters can be recorded within a single measurement process and displayed directly on the control unit. The instrument is particularly suitable for on-site investigations of surface waters, water quality monitoring and the inspection of water treatment processes. The U-51 version is equipped with a 2-metre sensor cable and enables the simultaneous display of up to 10 measured and calculated values. Measuring Parameters of the HORIBA U-51 The multi-parameter measuring instrument records important physical and chemical parameters for assessing water quality. pH value: Assessment of the acidic or alkaline characteristics of a water sample. Oxidation-Reduction Potential (ORP): Measurement of the electrochemical oxidation-reduction potential. Dissolved Oxygen (DO): Monitoring the oxygen content in water. Electrical Conductivity: Assessment of electrical conductivity as an indicator of dissolved ions. Salinity: Determination of salt content based on conductivity measurements. TDS: Determination of total dissolved solids as a calculated value. Seawater Specific Gravity: Calculated parameter for corresponding water samples. Temperature: Measurement of water temperature for the assessment and compensation of temperature-dependent parameters. Depending on the parameter, different display formats and calculated values can be shown. The U-51 version does not feature turbidity measurement. Functions and Features The HORIBA U-51 combines a multifunctional sensor probe with a portable control unit. This allows several water parameters to be recorded within a single measurement process, without requiring a separate measuring instrument for each parameter. Clear Measurement Display The control unit features a backlit monochrome graphic display on which the recorded measurement values are clearly presented. This facilitates the assessment of water quality directly at the measuring location. Data Storage and Transfer The instrument offers a storage capacity of up to 10,000 data sets. Stored measurement data can be transferred via the USB interface for further documentation and evaluation. Designed for Mobile Use The robust construction and water-protected components are designed for measurements under demanding operating conditions. The sensor probe complies with protection class IP68, while the control unit complies with protection class IP67 when the sensor cable is connected. Calibration and Sensor Maintenance The integrated calibration functions support the preparation of the measuring instrument for reliable measurements. Regular calibration, cleaning and maintenance of the sensors in accordance with the manufacturer's instructions are necessary to ensure consistently meaningful results. Typical Applications The HORIBA U-51 is suitable for various tasks in water analysis and environmental monitoring. Surface Waters: Investigation of rivers, lakes and other natural water bodies. Environmental Monitoring: Measurement of important water parameters to observe changes in water quality. Industry and Process Water: Spot checks of relevant water parameters in industrial environments. Wastewater and Discharges: Supplementary on-site measurements to assess water characteristics. Research and Field Investigations: Mobile data collection for scientific and application-related investigations. Advantages of Multi-Parameter Measurement Measurement of several water parameters using a combined sensor probe. Fewer instrument changes during extensive on-site measurements. Direct display of measurement values on the portable control unit. Storage and transfer of measurement data for documentation. Robust design for mobile water investigations. 2-metre sensor cable for flexible measurements on site. Technical Information and Downloads A detailed overview of the technical features, measuring ranges, resolutions and further specifications of the HORIBA U-51 can be found under the "Specifications" tab. Additional information about the HORIBA U-50 series is available in the product brochure in the download section. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.

HORIBA X-51 – Digital Simulator for pH, ORP, Ions, Dissolved Oxygen and Temperature Checking Measuring Instrument Functions and Simulating Sensor Signals Reliable measurement results require not only correctly functioning sensors but also properly operating measuring instruments. If implausible measurement values or deviations occur, it is necessary to determine whether the cause lies in the sensor or in the signal processing of the measuring instrument. The HORIBA X-51 Digital Simulator is a testing instrument designed to simulate defined electrical sensor signals. It enables functional testing of compatible measuring instruments without requiring an actual measurement signal from a water sample. The simulator generates electrical substitute signals for the measurement parameters pH, oxidation-reduction potential (ORP), ion-selective measurement (ION), dissolved oxygen (DO) and temperature (TEMP). This makes it possible to check the response of a measuring instrument to predefined input signals and verify important signal processing functions. One of the main applications is the regular functional testing of measuring instruments. The HORIBA X-51 particularly supports the verification of linearity and temperature compensation functions. Unlike a water analysis instrument, the simulator does not directly measure water parameters in a sample. Instead, it provides defined electrical input signals that can be used to check the behaviour of a connected measuring instrument. This makes the HORIBA X-51 particularly suitable for servicing, technical troubleshooting, regular instrument inspections and quality assurance in measurement technology. Simulated Measurement Parameters of the HORIBA X-51 The digital simulator provides different electrical substitute signals for testing compatible measuring instruments. The type of output signal depends on the respective measurement parameter. pH Value: Simulation of a corresponding electrode voltage signal to verify the pH measurement function. Oxidation-Reduction Potential (ORP/mV): Output of defined voltage signals to check mV measurement and signal processing. Ion-Selective Measurement (ION): Simulation of electrical voltage signals from ion-selective electrodes to test compatible ion measuring instruments. Dissolved Oxygen (DO): Provision of an electrical substitute current signal for testing corresponding dissolved oxygen measuring instruments. Temperature (TEMP): Simulation of a temperature-dependent resistance signal corresponding to the behaviour of a thermistor. The simulated signals are used to verify the electrical inputs of measuring instruments and their associated evaluation functions. They do not replace measurements of actual water samples or comprehensive testing of connected sensors. Functions and Features Simulation of Defined Electrode Voltage Signals For pH, ORP and ion-selective measurements, the HORIBA X-51 provides electrical substitute voltage signals. These correspond to theoretical input signals of the respective electrodes. The connected measuring instrument can therefore be supplied with predefined signals. By evaluating the displayed values, it is possible to determine whether the signal processing operates within the specified test criteria. Current Signal for Dissolved Oxygen Measurement To test the dissolved oxygen measurement function, the simulator generates an electrical substitute current signal. This allows the behaviour of compatible dissolved oxygen measuring instruments to be examined independently of an actual water sample. The simulation helps distinguish between possible faults in the sensor unit and problems with processing the electrical input signal. Simulation of Temperature-Dependent Resistance For temperature testing, the HORIBA X-51 provides an electrical substitute resistance corresponding to the signal of a thermistor. This allows the temperature measurement function and temperature-dependent calculations of compatible measuring instruments to be checked. Verification of Linearity Linearity describes how consistently a measuring instrument responds to different input signals within its specified measuring range. With the HORIBA X-51, defined test signals can be applied and compared with the displayed measurement values. This supports the identification of possible deviations in signal processing. Checking Temperature Compensation In various electrochemical measurement methods, temperature influences the calculation of measurement values. For this reason, corresponding measuring instruments feature temperature compensation functions. The HORIBA X-51 supports the verification of these functions by simulating suitable electrical input signals. Support for Troubleshooting If implausible values are displayed during water analysis, several possible causes must be considered. These may include contaminated or damaged sensors, connection problems and faults in the measuring instrument electronics. By applying a defined substitute signal, it is possible to check whether the measuring instrument processes this signal as expected. This helps systematically narrow down potential sources of error. For Regular Functional Testing The digital simulator can be used for recurring inspections to check the behaviour of compatible measuring instruments using defined input signals. The evaluation of test results is based on the technical specifications of the respective measuring instrument and the applicable testing procedures. Typical Applications The HORIBA X-51 is suitable for various testing and service tasks in electrochemical measurement technology. Laboratory Analysis: Functional testing of compatible pH, ORP, ion and dissolved oxygen measuring instruments. Service and Maintenance: Verification of electrical signal processing during regular instrument inspections. Technical Troubleshooting: Identification of possible causes of implausible or deviating measurement displays. Quality Assurance: Support for documented functional testing of measuring instruments. Linearity Testing: Comparison of predefined electrical input signals with displayed measurement values. Temperature Compensation: Verification of temperature-dependent measuring instrument functions. Technical Customer Service: Systematic testing of compatible measuring instruments during maintenance and service work. Research and Development: Support for functional testing of suitable electrochemical measurement systems. Advantages of Digital Sensor Simulation Simulation of electrical sensor signals for pH, ORP, ION, DO and temperature. Testing of compatible measuring instruments without an actual water sample. Support for verifying measuring instrument linearity. Checking temperature compensation functions. Systematic identification of possible error sources in signal processing. Suitable for regular functional testing and technical service work. Support for traceable documentation of test results. Multiple simulation functions combined in one testing instrument. Technical Information and Downloads The HORIBA X-51 Digital Simulator is designed to simulate theoretical electrical input signals for compatible measuring instruments. Substitute voltage signals are provided for pH, ORP and ion measurements, substitute current signals for dissolved oxygen measurements, and corresponding substitute resistance signals for temperature measurements. Information on the available simulation ranges, connection options, operating functions and testing procedures can be found in the instruction manual in the download section. Before use, check the compatibility of the simulator with the respective measuring instrument, as well as the required connections and testing specifications. Note on Use: The HORIBA X-51 is a simulator designed to verify electrical measuring instrument inputs and associated evaluation functions. It does not replace the calibration and maintenance of actual sensors or any comprehensive metrological verification of the measurement system that may be required. Note on Scope of Delivery: From November 2026, HORIBA products will be supplied without batteries. Existing stock may still include batteries. Batteries are no longer included with newly manufactured products and must be purchased separately if required.