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 when the filter has 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 Pluck 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 work with 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.
Timely intervention 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 when a defined limit value is reached. Secret Plot 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 essential for two reasons. Firstly: It prevents possible contamination of the water. Secondly: The operator saves energy by making use of continuous filter monitoring. The more fouled a filter is, the harder the pump must work for the desired media flow.
Integrated working pressure indication
The customer chose the DELTA-line pressure gauge for filter monitoring for yet another reason ? because of the integrated working pressure indication. This information is important 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 an additional measuring location.
Further measuring requirements
In addition to 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 a variety of applications. DPGx instruments can be found 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 can be found in our flyer. Further technical info on the products are available in the pressure gauge and contact pressure gauge products on the WIKA website. Should 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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