Wasserhärte ist ein Maß für den Gehalt an Calcium- und Magnesiumionen im Wasser. Diese Ionen kommen natürlicherweise im Wasser vor und stammen aus der Auflösung von Mineralien wie Kalkstein und Gips. Die Wasserhärte wird in der Regel in deutschen Härtegraden (°dH) gemessen.
Eine hohe Wasserhärte kann dazu führen, dass Kalkablagerungen in Rohren, Geräten und Haushaltsgeräten wie Wasserkochern, Waschmaschinen und Kaffeemaschinen entstehen. Es kann auch dazu führen, dass Waschmittel und Seifen weniger effektiv sind, da sie mit den Calcium- und Magnesiumionen im Wasser reagieren.
Auf der anderen Seite kann eine zu niedrige Wasserhärte (weiches Wasser) auch problematisch sein, da es dazu führen kann, dass das Wasser korrosiver wird und Metalle und Rohre schnelle abnutzen.
Die Wasserhärte kann durch verschiedene Methoden reduziert werden, einschließlich der Verwendung von Wasserenthärtungsanlagen, die üblicherweise mit Ionenaustauscherharzen arbeiten, um Calcium- und Magnesiumionen aus dem Wasser zu entfernen.
Precise Water Hardness Analysis for Automated Process and System Monitoring with the Testomat EVO TH Fully automatic water hardness determination via titration The Testomat EVO automatically detects the water level when filling the measuring chamber and can also operate for extended periods in BOB mode without constant supervision. With an integrated SD card or optionally an SDHC card (2 GB), measurement data and messages/alarms can be recorded. The menu is available in multiple languages, and firmware updates can be conveniently applied via the SD card. Analog outputs and serial interfaces allow external processing of measurement data. Certified and Cost-Effective Standalone Water Hardness Meter With the Testomat EVO, you benefit from stable, low-maintenance continuous operation, minimal consumption of indicator solution and water, as well as versatile data communication via RS232 or 0/4–20 mA signals. Certification according to relevant safety and TÜV standards (WÜH certification for boiler houses) and the compact design make the EVO a robust and efficient solution for demanding measurement tasks. Applications for the Testomat EVO Water treatment Drinking water systems Industrial boilers Process water monitoring When purchasing the Testomat EVO online, you receive, in addition to a 3 % online discount on Heyl devices, a free indicator of your choice.
Features and Equipment Optical water detection when filling the measuring chamber ensures precise dosing. Additionally, the device features automatic venting of the indicator line, an integrated self-test, and a multilingual menu. Measurement data and messages/alarms are logged via an integrated SD card or optional SDHC card. Recorded values and alarms can be transmitted for external processing via an analog 0/4–20 mA output or the RS232 interface. Applications of the Testomat EVO TH CAL Monitoring hardness in water treatment systems Water hardness measurement in drinking water systems Fully automatic hardness measurement in industrial boilers Process water monitoring Continuous monitoring of water hardness enables reliable process control in water treatment, drinking water, and industrial systems. Scale deposits, corrosion, and energy losses are reduced, legal limits are safely maintained, and equipment lifespan is extended. Deviations in water hardness are detected early, improving operational safety, product quality, and efficiency. Benefits of the Testomat EVO TH CAL in Daily Operation The Testomat EVO TH CAL features minimal water and indicator consumption as well as simple data management. With a freely programmable password, external reset and acknowledgment inputs, and the ability to adapt to temporarily low water pressure, the device is suitable for demanding environments.