From January 2026 – The future of limit monitoring for hardness measurement with the Testomat Limit TH
Industrial water treatment
Testomat® Limit TH
Innovative technology and high service convenience for efficient industrial water treatment
The Testomat® Limit TH stands for state-of-the-art technology combined with proven Heyl functionality.
Precision, safety, and efficient processes
The new family of devices for measuring hardness limits impresses with highly precise measurement results, maximum safety, and efficient processes thanks to newly developed pump technology, programming functions for the indicator fill level, and an intuitive user interface with symbol-guided menu navigation.
Real-time detection and clear display
Limit values are detected in real time and visually displayed using a traffic light system in green or red. The Testomat® Limit also enables 72-hour unattended operation (BOB).
Low maintenance with high service convenience
Thanks to new technologies and optimized functions, the Testomat® Limit requires less maintenance and offers technicians maximum service convenience.
The next generation of limit value monitoring devices from Heyl is innovative, service-friendly and future-proof.
Limit monitoring • Water hardness
The Testomat® Limit TH from Heyl – innovative, reliable, and future-oriented
The Testomat® Limit from Heyl impresses first-time users with its forward-looking functionality and also offers experienced users a high degree of safety thanks to proven technology from the Testomat® 808.
Advantages of the Testomat® Limit over the Testomat® 808
- Precise limit value measurement – reliable monitoring of water hardness for stable processes.
- Real-time monitoring – reliable detection of any limit value exceedance.
- Intuitive color scale – Green (non-critical values), Red (limit values exceeded).
Highlights & features at a glance
State-of-the-art measurement technology combined with intuitive handling – for greater efficiency, operational reliability, and ease of maintenance during operation.
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Intuitive operation
Icon-based user interface and touch display for simplified operation.
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Quickly readable indicator level
The indicator level can be entered manually quickly and easily if required.
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Proven indicators
Use of the well-known and proven T 2000 indicators from Heyl – for maximum operational reliability.
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72-hour unattended operation (BOB)
Designed for 72-hour unattended operation – continuous monitoring without costly, permanent staffing.
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Reliable platform
Combination of new technology and Heyl's proven Testomat® platform – reliable measurement results with easy handling.
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Precise indicator dosing
Accurate indicator dosing thanks to newly developed pump technology.
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Protection against light exposure
New measuring chamber technology prevents measurement results from being distorted by light exposure.
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TFT touchscreen & USB
TFT panel (touchscreen) with USB interface for firmware updates of the panel.
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Automatic venting
Automatic venting function for stable operation.
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Error history in plain text
Error history with plain text display directly on the screen.
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Measured value storage
Measured value storage via SD card.
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Service-friendly measuring chamber
New measuring chamber technology for exceptional serviceability and intuitive handling.
Areas of application
Use the Testomat® Limit wherever precise monitoring of water hardness is crucial for the quality assurance of your process:
- Monitoring of water softening and reverse osmosis systems
- Monitoring of process and cooling water
- Ensuring water quality in industry and commerce
Your added value
With Testomat® Limit, you get the new generation of limit value monitoring – more precise, more convenient, and more economical.
HeylNeomeris – Progress and innovation for sustainable water quality.