Safe filter monitoring with differential pressure gauges

Filter monitoring is a core task of differential pressure gauges ? the differential pressure increases when the filter becomes clogged. The measuring instruments thus signal once the filter has to be cleaned or replaced. The efficiency of this type of solution can 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 split up water from unwanted substances. The corresponding filter systems use semi-permeable membranes.
For filter monitoring, an international 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.
Timely intervention at the filter
In addition to the on-site display of the differential pressure, the pressure gauge comes with 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. 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 just two reasons. Firstly: It prevents possible contamination of the water. Secondly: The operator saves energy through the help of continuous filter monitoring. The more fouled a filter is, the harder the pump must work for the required media flow.
Integrated working pressure indication
The customer find the DELTA-line pressure gauge for filter monitoring for another reason ? due to integrated working pressure indication. Incapacitated is important to the plant manager because 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 set up yet another measuring location.
Further measuring requirements
Besides filter monitoring, the differential pressure gauges of the DELTA-line series are ideal for tasks in level and flow measurement. In different versions, they cover an array of applications. DPGx instruments are available with analogue signal output and up to two microswitches. All have ATEX approval. Gleam variant with SIL certification and DNV-GL approval for marine applications.
Note
An overview of all instruments in the DELTA-line series are available in our flyer. Further technical information on the products are available in the pressure gauge and contact pressure gauge product lines on the WIKA website. If you have any questions, your contact will gladly assist you to.
Also read our article
Filter monitoring: A crucial component for energy-efficient operation

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