Filter monitoring is really a core task of differential pressure gauges ? the differential pressure increases as soon as the filter becomes clogged. The measuring instruments thus signal once the filter should be cleaned or replaced. The efficiency of this type of solution could be illustrated by the exemplory case of WIKA pressure gauges of the DELTA-line series in water treatment.
With microswitch and operating display ? the WIKA model DPGS40 differential pressure gauge enables safe filter monitoring.
In the water industry, reverse osmosis is really a widely used process to separate water from unwanted substances. The corresponding filter systems use semi-permeable membranes.
For filter monitoring, a global solution provider for the treatment of drinking, industrial and wastewater uses WIKA model DPGS40 differential pressure gauges in its plants in Germany. The instrument measures the pressure on both sides of the membrane.
Frantic at the filter
In addition to the on-site display of the differential pressure, the pressure gauge has an integrated microswitch. This sends a warning signal to the control centre whenever a defined limit value is reached. This permits the operator to set up for timely cleaning or replacement of the filter. Due to its mechanical measuring principle, the filter monitoring also functions reliably in the event of a power failure.
Continuous monitoring
Prompt intervention at the filter is essential for just two reasons. Firstly: It prevents possible contamination of the water. Secondly: The operator saves energy through continuous filter monitoring. The more fouled a filter is, the harder the pump has to work for the required media flow.
Integrated working pressure indication
The customer chose the DELTA-line pressure gauge for filter monitoring for just one more reason ? due to integrated working pressure indication. These details is essential to the plant manager since it allows him to draw conclusions concerning the respective pump performance. To obtain this information minus the two-in-one solution, he’d otherwise have had to create yet another measuring location.
Further measuring requirements
As well as filter monitoring, the differential pressure gauges of the DELTA-line series are suitable for tasks in level and flow measurement. In various versions, they cover a wide range of applications. DPGx instruments are available with analogue signal output or more to two microswitches. All have ATEX approval. There is also a variant with SIL certification and DNV-GL approval for marine applications.
Note
An overview of most instruments in the DELTA-line series are available in our flyer. Further technical info on the products are available in the pressure gauge and contact pressure gauge products on the WIKA website. For those who have any questions, your contact will gladly help you.
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Filter monitoring: A crucial component for energy-efficient operation