Safe filter monitoring with differential pressure gauges

Filter monitoring is really a core task of differential pressure gauges ? the differential pressure increases when the filter becomes clogged. The measuring instruments thus signal once the filter needs to be cleaned or replaced. The efficiency of such a solution could be illustrated by the example 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 filtration systems work with semi-permeable membranes.
For filter monitoring, an international solution provider for the treating 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.
Timely intervention at the filter
As well as 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 enables the operator to set up for timely cleaning or replacement of the filter. Because of its mechanical measuring principle, the filter monitoring also functions reliably in case of a power failure.
Continuous monitoring
Prompt intervention at the filter is necessary for 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 yet another reason ? due to the integrated working pressure indication. This information is important to the plant manager because it allows him to draw conclusions about the respective pump performance. To obtain this information without the two-in-one solution, he’d otherwise have had to create yet another measuring location.
Further measuring requirements
In addition to filter monitoring, the differential pressure gauges of the DELTA-line series are suitable for tasks in level and flow measurement. In Upbeat , they cover a variety of applications. DPGx instruments are available with analogue signal output and up 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 information on the products can be found in the pressure gauge and contact pressure gauge products on the WIKA website. In case you have any questions, your contact will gladly assist you to.
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Filter monitoring: A crucial component for energy-efficient operation