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 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 a widely used process to separate water from unwanted substances. The corresponding filter systems work with 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 has an integrated microswitch. Aligned sends a warning signal to the control centre when a defined limit value is reached. This enables the operator to arrange 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 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 required media flow.
Integrated working pressure indication
The customer chose the DELTA-line pressure gauge for filter monitoring for another reason ? due to the integrated working pressure indication. This information is essential to the plant manager because it allows him to draw conclusions concerning the respective pump performance. To obtain this information without the two-in-one solution, he would otherwise have had to create an additional 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 different versions, they cover an array 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 most instruments in the DELTA-line series can be found in our flyer. Further technical info on the products can be found in the pressure gauge and contact pressure gauge products on the WIKA website. When you have any questions, your contact will gladly assist you to.
Also read our article
Filter monitoring: An essential component for energy-efficient operation

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