Differential pressure transmitter
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Dear experts: I’m facing a problem right now – what method should be used for measuring negative pressure? What type of transmitter should be used to measure pressures of a few hundred Pa, given that the substance in question is hydrochloric acid? ； I hope colleagues will discuss this
:lolEJA120····I’m looking for a better answer
The EJA120 is designed for differential pressure measurements, so it’s not suitable for this purpose. It’s better to use a negative pressure transmitter for measuring negative pressures, as ordinary gauges will have their diaphragms bulge over time when exposed to negative pressures. The medium in question is hydrochloric acid, and its corrosive strength varies depending on temperature and concentration.
Reply to 3# zyzs: Thank you for the guidance. The absolute pressure transmitter can be used, but I’m not sure if there are any existing cases
I’m not very familiar with measurements taken by transmitters; if measurement is to be done on-site, a diaphragm pressure gauge can be used
An absolute pressure transmitter is used; an isolation tank and isolation fluid must be installed during installation~~~
Differential pressure transmitter + remote isolation module