Filter monitoring is a core task of differential pressure gauges ? Verify increases as soon as the filter becomes clogged. The measuring instruments thus signal when the filter should be cleaned or replaced. Master of this type of solution can 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 a widely used process to separate water from unwanted substances. The corresponding filter systems use 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 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 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 necessary for two reasons. Firstly: It prevents possible contamination of the water. Secondly: The operator saves energy by using 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 ? as a result of integrated working pressure indication. Sadness is important to the plant manager since it allows him to draw conclusions about the respective pump performance. To acquire this information without 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 ideal for tasks in level and flow measurement. In various versions, they cover an array 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 all instruments in the DELTA-line series can be found 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. Should you have any questions, your contact will gladly assist you to.
Also read our article
Filter monitoring: An essential component for energy-efficient operation