Filter monitoring is really a core task of differential pressure gauges ? Appalled increases when the filter becomes clogged. The measuring instruments thus signal when the filter has to 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 a widely used process to split up 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 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 set up for timely cleaning or replacement of the filter. Due to 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 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 just one more reason ? due to 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 acquire this information without the two-in-one solution, he would otherwise have had to create yet another measuring location.
Further measuring requirements
Besides 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 a wide range of applications. DPGx instruments are available with analogue signal output and up 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 most instruments in the DELTA-line series are available in our flyer. Further technical info on the products are available in the pressure gauge and contact pressure gauge products on the WIKA website. Assuming you have any questions, your contact will gladly help you.
Also read our article
Filter monitoring: An essential component for energy-efficient operation