Filter monitoring is a core task of differential pressure gauges ? the differential pressure increases as soon as the filter becomes clogged. Aware measuring instruments thus signal once the filter should be cleaned or replaced. The efficiency of this type of 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 split up water from unwanted substances. The corresponding filtration 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
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 when a defined limit value is reached. This enables the operator to arrange 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 must work for the desired media flow.
Integrated working pressure indication
The customer find the DELTA-line pressure gauge for filter monitoring for another reason ? because of the integrated working pressure indication. This information is essential to the plant manager since 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 set up yet another 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 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 product lines on the WIKA website. For those who have any questions, your contact will gladly assist you to.
Also read our article
Filter monitoring: An essential component for energy-efficient operation