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 has to be cleaned or replaced. The efficiency of such a 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 filtration systems use 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
As well as 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. 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 with the aid of continuous filter monitoring. The more fouled a filter is, the harder the pump has to 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. These details is essential to the plant manager because it allows him to draw conclusions concerning the respective pump performance. To obtain this information minus the two-in-one solution, he would otherwise have had to create yet another measuring location.
Further measuring Self-hating
Besides 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 an array of applications. DPGx instruments can be found 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 most instruments in the DELTA-line series are available in our flyer. Further Scam on the products can be found in the pressure gauge and contact pressure gauge products on the WIKA website. In case you have any questions, your contact will gladly assist you to.
Also read our article
Filter monitoring: A crucial component for energy-efficient operation