Questions regarding how to calibrate the zero point of a gauge pressure transmitter
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At what negative pressure in KPa is it necessary to use a gauge pressure transmitter for measurement? How to calibrate the zero point of a gauge pressure transmitter?
Pressures below atmospheric can be measured using an absolute pressure transmitter. Adjust the zero point when there is no input signal.
It is a relative concept; if the negative pressure is not very high, for example around ten KPA, it can be measured using an ordinary pressure transmitter. As for the zero point for absolute pressure, generally speaking, it must be at absolute zero, that is, -100 KPA, in order to use it as a zero-point calibration. Usually, no units have such equipment.
It is a relative concept; if the negative pressure is not very high, for example around ten KPA, it can be measured using an ordinary pressure transmitter. As for the zero point for absolute pressure, generally speaking, it must be at absolute zero, that is, -100 KPA, in order to use it as a zero-point calibration. Usually, organizations do not have such equipment
I’ve never really understood what people mean by adjusting the zero point of an absolute pressure transmitter Is it calibrating the zero point during self-calibration? Should the zero point still be set like in normal differential pressure? It can’t be set to zero, right? If the absolute pressure is set to zero, it becomes pressure. Some people have reported this issue, where it gets set to zero. Furthermore, if one wants to calibrate the zero point, can the equipment in a company achieve such an ideal zero point? I know that when calibrating the gauge pressure gauges at the Rosemount factory, the zero point seems to be set at 0.5 kPa (a), right?