Cleaning of submersible pressure transmitters or level probes

If the precise pressure sensor design of the submersible pressure transmitter or level probe is selected to gauge the filling levels, this can indicate that the probe is used under environmental requirements which would cause failure of common level sensors.
The most adverse conditions such as soiled media, abrasive ingredients and sludge when used in wastewater treatment plants, brackish and wastewater tanks and even digester towers, impose special requirements on the look of a submersible pressure transmitter. One of the main requirements on a submersible pressure transmitter is to have the lowest possible susceptibility to contamination or build-up of the pressure sensor by optimizing its design. เกจวัดแรงดัน is why the typical design of a pressure transmitter with narrow pressure ports is not used within level probes since it would tend to clog in such applications.
The design of the submersible pressure transmitter and its own pressurised sensor diaphragm is optimised in order to achieve suprisingly low susceptibility to contamination. However, continuous operation in soiled media can lead to sticking of dirt particles on the stainless diaphragm. To obtain the highest accuracy and fastest response times in the event of level change, the thickness of this stainless steel diaphragm is already minimised ex factory to just a couple microns. Therefore, cleaning of the diaphragm should be completed with caution. Always stay away from sharp or edged tools. It is also strongly advised never to use the commonly used screwdrivers or pens.
If cleaning of the sensor diaphragm is essential, then rinse it utilizing a weak water jet or clean it carefully using compressed air. Damage of the diaphragm due to denting or notching, even if it appears to be purely superficial, results in significant losses in the accuracy of level measurement. Deformation of the diaphragm often shifts the zero point of the pressure measurement in the inner electronic measurement system and also distorts the output signal linearisation which has been adjusted ex works to the undamaged diaphragm. Thus, the submersible pressure transmitter with damaged diaphragm generates falsified measurement of the current filling level and, therefore, cannot be considered a reliable measuring instrument any more. Thus, complete replacement of the damaged instrument is absolutely necessary.
Please find more info with this topic on our information platform ?Hydrostatic level measurement?

Scroll to Top