Our sensors are suitable for distillated water, drinking water, pool water, service water, cooling water, CIP-plants, waste water, etc.
The highest resolution is 1 µg/L, the largest measuring range is 10.000 ppm. With a special measuring and control device all the advantages of the sensors can be exhausted. Because of the different electrical types, e.g. 4-20 mA connection or customer specific connections, the sensors can naturally be connected with customer´s measuring and control devices.
The following disinfectants can be measured:
Bromine, Chlorine, Chlorine dioxide, Chlorite, Ozone, Peracetic acid, Hydrogen peroxide.
The manufactoring of our sensors is subjected to rigorous quality inspections, i.e. during the manufacturing process, the individual components are continuously inspected.
The finished sensors are subjected to a final inspection by placing them in a test water circuit for several hours.
The measuring data are recorded and listed.
Here you can download our latest flyer.
The sensors have a diameter of 25 mm. The sensors equipped with a plug adapter connection have a length of 175 mm. The 4-20 mA models have a length of 220 mm.
The sensors are working with different electrochemical methods of measuring:
Two-electrode system
In this system, the measuring electrode is made of gold, the combined counter and reference electrode is made of silver and has a silver halide coating. Between the two electrodes, a bias voltage (polarisation voltage) is applied.
Three-electrode system
In this potentiostatic system, the measuring electrode is made of gold, the reference electrode is made of silver with a silver halide coating and the counter electrode is made of stainless steel. The measuring electrode is maintained at an appropriate working potential by the potentiostat.
General advantages of the membrane-covered sensor
Sensors TARAsens AS2 and TARAsens AS3
Destroying legionalla pneumophila and removing biofilms building up in hot water pipelines and / or hot water boilers (this is, of course, also true for cold water pipelines) is becoming more and more important. Problems caused by this increasing build-up of germs are present mainly in buildings and institutions having centralised widely-branched water supply systems, like those in hospitals, major hotels, schools, barracks etc.
To obtain proper hygienic conditions, chlorine or chlorine dioxide can be used as disinfectants. The previously used measuring systems for measuring the disinfectant concentration can only be operated without pressure. This means that the measuring water, approx. 30 l/h as a rule, is lost. This continuous loss of (hot) water causes unnecessarily high costs. The outgassing of the (unpressurised) measuring water may also result in measuring problems.
Therefore there was a demand for developing a new sensor to be used especially for the disinfection of drinking water. This sensor TARAsens AS2 can be used for temperatures up to at least 50 °C (TARAsens AS3 70 °C) and at pressures of 8 bar (80 mWC).
The optimum location for the application of the Sensors is the bypass leading to the main water supply line having its own measuring water circulation. The bypass allows maintenance of the sensor, if required, without the necessity to interrupt the entire water supply system.
The TARAsens AS-CL version of the TARAsens AS2-CL and TARAsens AS3-CL is available for chlorine measuring, and the TARAsens AS2-CD and TARAsens AS3-CD is suitable for measuring chlorine dioxide. Due to the different sensitivity, it is essential for the measuring device to have a wide slope adjustment range. It is obvious that only microprocessor controlled measuring devices or controls should be used. A zero-point adjustment is not necessary.
0 … -2000 mV
0 … +2000 mV
4-20 mA
Modbus RTU
5-pole M12 plug-on flange
(analog or digital internal signal processing)
2-pole terminal
(analog internal signal processing)
5-pole M12 plug-on flange
(Analog internal signal processing)
5-pole M12 plug-on flange
(Analog internal signal processing)
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