Testomat Limit TH and Testomat 808 in direct comparison
A comparison of the most important differences, advantages and areas of application
The Testomat Limit TH online analyser is the successor to Heyl's Testomat 808. The Limit TH automatically measures total hardness. Below, the two devices are compared directly with each other and the advantages of the Limit TH are highlighted.
What are the advantages of the Testomat Limit TH compared to the Testomat 808?
- It has a TFT panel (touchscreen) with USB interface for firmware updates of the panel
- Automatic venting function
- Use of all hardness indicators from the proven Testomat 2000 series for a simple titration process
- Error history via plain text display
- Measurement value storage via SD card
- Measuring chamber to prevent analysis interference from external light
- Service-friendly thanks to quick-coupling system in the measuring chamber area and hydraulic hoses
Functions that remain unchanged:
Water detection is still visual. Both have a limit value output, an alarm output, an external reset/acknowledgement input for errors and alarms, an external stop input, and a monitorable measuring point and limit value exceedance. The devices have 72 hours of unattended operation (BOB).
Where can the Testomat Limit TH be used?
The Testomat Limit TH from Heyl can be used in the same areas of application as the Testomat 808.
Reverse osmosis system: To protect the membranes and extend the service life of the system.
Boiler feed water supply: Energy costs can be reduced and it protects the boilers from limescale deposits.
Soft water for commercial purposes: Equipment remains clean and efficient.
Ultrapure water systems: Water hardness measurement is crucial to ensure purity and protect sensitive applications.
You are in good hands with HeylNeomeris – we support you with our personal advice and technical support:
We are happy to assist you with any questions or help you choose the right device. Our comprehensive service partner network provides you with fast, reliable maintenance and support directly on site.
You can reach us via our service hotline on +49 (0) 5121 7609 99, Monday to Thursday from 8 a.m. to 5 p.m. and Friday from 8 a.m. to 4 p.m.
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Testomat® Limit TH – Precise Water Hardness Monitoring for Maximum Process Reliability Our new Testomat Limit TH is a limit-value measuring device that automatically monitors residual total hardness (water hardness) in water. It is your reliable online analyzer for continuous monitoring of residual total hardness in the range of 0.05–25.0 °dH. You can continue to use all hardness indicators from the proven Testomat® 2000 series. With intuitive touchscreen operation and clear menu navigation, it enables easy handling and quick setup. The device is ideal for water treatment applications in reverse osmosis systems, softening plants, electroplating, large kitchens, laundries and industrial processes. Testomat® Limit TH supports up to 72 hours of operation without constant supervision and automatically informs you about the indicator fill level for uninterrupted measurements. With a short analysis time of only 2 minutes and flexible settings for limit values and measuring intervals, it ensures maximum efficiency. Integrated logging of limit exceedances and alarm messages provides transparency and safety for your processes. For precise results, we recommend using original Heyl indicators and spare parts—ensuring reliable operation and full warranty coverage. Order online now and benefit from a 3% discount in the HeylNeomeris shop. When purchasing a Testomat Limit device, you also receive a hardness indicator of your choice free of charge. Secure the future of water hardness monitoring with the new Testomat® Limit TH—reliable, convenient and future-ready. Testomat Limit TH Online analyzer for water hardness The Testomat Limit TH is your reliable limit-value measuring device for automatic monitoring of residual total hardness (water hardness) in water. It is a compact analyzer for online water hardness measurement based on the principle of “limit monitoring with color change” within a measuring range of 0.05 – 25.0 °dH. Our customers appreciate the easy operation of the new device. With touchscreen and drop-down menus, it is simple to use. Power Supply Note The Testomat LIMIT TH 0–3/8 bar is operated with 24 V DC. To connect it to 230 V mains power, a separate plug-in power supply is required (including EU primary adapter). The plug-in power supply is not included in the scope of delivery and can be ordered separately under item number 30996. Areas of application: The Testomat Limit TH was designed for use in water treatment (e.g., reverse osmosis systems, electroplating, large boiler systems, laundries, large kitchens and softening plants). The device is a limit-value measuring instrument that automatically monitors residual total hardness (water hardness) in water. The analysis result is displayed in color in the “Measured Values” menu. Limit value not exceeded = green frame, limit value exceeded = double red frame. Limit value: You can set the limit value you wish to monitor yourself. The adjustable limit range depends on the indicator type. For use with Testomat Limit TH devices, indicators with different measuring ranges are available to match your operational requirements. Within the indicator’s measuring range, the limit value to be monitored can be freely set. All indicator types are available in two container sizes (100 ml and 500 ml). A detailed list of suitable indicators with the corresponding item numbers can be found below. Product benefits: Self-test and continuous self-monitoring: The device status is displayed. Testomat Limit TH performs a self-test when switched on and continuously monitors itself during operation. 72-hour operation without constant supervision: Testomat Limit TH automatically indicates whether sufficient indicator is available for continuous measurement. Taking into account the remaining indicator volume, the set interval pause and the indicator amount consumed per measurement, the device calculates whether the remaining quantity is sufficient for the next 72 operating hours. Automatic display of the indicator fill level Logging of limit undercuts and exceedances with date and time. Logging of alarm or error messages with date. Flexible configuration of limit values and measuring intervals Free choice of hardness units in °dH, °f, ppm CaCO3 or mmol/l. Short analysis time: approx. 2 minutes Short measuring time: approx. 4 minutes per analysis Technical highlights: Adjustable limit range: limit values for residual hardness from 0.05 – 25.0 °dH depending on the selected indicator Interval operation: 0 – 60 minutes, plus manual start or external control Long operating times thanks to 500 ml indicator reserve (>1000 measurements) SD card for measurement data logging and firmware updates 4–20 mA interface for transmitting measured values Optional retrofit pump (40692) for automatic cleaning of the measuring chamber Why original Heyl indicators and spare parts? For reliable operation and precise measurement results, use only original Heyl indicators and original Heyl spare parts. Third-party indicators and spare parts can lead to measurement errors and damage. If other indicators or spare parts are used, the device warranty becomes void. Certificates & approvals: Conformity: CE EN 61326-1 Electrical equipment for measurement, control and laboratory use – EMC requirements EN 61010-1 Safety requirements for electrical equipment for measurement, control and laboratory use UK CA BS EN IEC 61326-1 Electrical equipment for measurement, control and laboratory use – EMC requirements – General requirements BS EN 61010-1+A1 Safety requirements for electrical equipment for measurement, control and laboratory use Protection rating: IP 44 Important notes To ensure proper device operation, regular maintenance is required (every six months to annually). Operate only with the specified DC voltage. Order now and monitor water hardness reliably! Secure your 3% online shop discount. When purchasing a Testomat Limit device, you will also receive a free hardness indicator of your choice. Do you have any questions about the product? We will be happy to answer your questions by phone as well. Download: Bedienungsanleitung User manualMode de emploi Gebruiksaanwijzing Testomat Limit Flyer Testomat Limit Flyer in English