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.
