What type of transmitter is generally used to measure KPa levels?
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At the outlet of the syngas compressor, where the pressure is 3~6 KPaG, can it be measured using a pressure transmitter? What is the minimum range of a pressure transmitter? Do we still need to use a differential pressure transmitter? Also, since the outlet pressure of the gasification furnace is between -500 Pa and 500 Pa, what should be used for measurement? Is it a general pressure transmitter or a differential pressure transmitter? Is there anything else to keep in mind?
The pressure at the compressor outlet is only 6 KPa, which is too low. A differential pressure transmitter can also be used; generally, the minimum range of ordinary pressure transmitters is 300–500 KPa； The second one uses a differential pressure transmitter
If there are no other special requirements, integrated transmitters made of diffused silicon can be used; it’s easy to have them manufactured by the manufacturer to meet your specified requirements. As for the range, it generally starts at 0 KPa, while the upper limit depends on your actual conditions. If the pressure in your system sometimes exceeds the value you specified, then you should consider the highest possible value. In other words, it is necessary to take into account not only the steady-state pressure but also the dynamic pressure values. At the same time, don’t choose a value that is too high, as ordinary pressure transmitters have the ability to withstand overpressure, and the manufacturer will provide you with these parameters.