Pressure transmitter
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I would like to ask everyone: if the range of a pressure transmitter is set to 200–300 KPa and it is zeroed with respect to atmospheric pressure, what will be the reading on the gauge and the milliampere signal in this case?
It is negative for the atmosphere, and the zero value cannot be adjusted
First, change the range to 0-100 KPa, so that the output is 4 mA at 0 KPa (which is what you mean by zeroing it to atmospheric pressure), and 20 mA at 100 KPa. Then perform positive offset adjustment. After migration, the output is 4 mA at 200 KPa and 20 mA at 300 KPa.
This post was last edited by liu530014416 on 2021-4-7 21:10. The normal zeroing method is the one for floor 3. If the range is not changed and adjustments are made directly, I think this is what will happen: the gauge displays 200, with an output of 4 mA, but the measurement is inaccurate; when the actual value is 100, the gauge still shows 300.