Controlsoft uses level gauges, flow meters and measuring probes in its applications in order to determine a range of analogue measurements, including temperature, fill levels and flow rates as well as ammonia, nitrite or chlorine content. Before being fed into the I/O system, these must be electronically isolated and converted. Galvanic isolation is necessary in order to filter out the frequent voltage surges or transients from the electrical signal, and signal conversion specifies the parameters of the analogue signal in the measuring instrument. Due to the large distances involved, the measured values are transmitted as current signals, although the different sensor types may be active (requiring a power supply) or passive (not requiring a power supply). This has an impact on the type of signal converter required.
Weidmüller offers a wide range of solutions for the automation of water refinement plants
“Most of the waterworks and wastewater treatment plants for which we provide automation solutions were not originally constructed by us. In the past, we have therefore always had to make changes to the signal converters, modify the control cabinets or even change the control programming,” says András Bárdos, Head of Automation Technology at Controlsoft, about the practical implications. “With the ACT20M-AI-AO signal converter modules from Weidmüller, we have finally found a solution that adapts the input values to match the sensor. This has made complicated changes to the control programmes superfluous, which is a huge advantage for us.”
Hungary’s largest company in the field of waterwork and wastewater treatment plant automation knows that its signals are in safe hands with Weidmüller.
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Published in March 2016
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