I have a question about pressure transmitters for everyone
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May I ask, if the range of a pressure transmitter is -100 kPa to 100 kPa, can it be zeroed directly using atmospheric pressure? Can a pressure transmitter with a range of -100kPa to 0kPa be zeroed directly using the atmosphere? Thank you all. . . . :hug:
Please tell me the model of your pressure transmitter. If it’s a regular pressure transmitter, you can calibrate its zero point by using the atmospheric pressure. However, if it’s a pressure transmitter designed for use in vacuum environments, and the vacuum level available on your calibration bench isn’t sufficient, it’s better not to try to calibrate the zero point yourself! ! ! Otherwise, the watch will be useless and needs to be sent back to the factory.
No, zero point is always -100 kPa
No, if you zero it out, 0 kPa will correspond to 4 MA – think about the consequences
No, if you zero it out, 0 kPa will correspond to 4 MA – think about the consequences
No, if you zero it out, 0 kPa will correspond to 4 MA – think about the consequences
No, if you zero it out, 0 kPa will correspond to 4 MA – think about the consequences
It cannot be zeroed; if it is a smart meter, it can be adjusted so that 0 kPa corresponds to 12 mA
It’s not clear which transmitter is used to measure gauge pressure, absolute pressure, or vacuum. For a transmitter with a gauge pressure range of -100 kPa to 100 kPa, the current value is 12 mA when both the positive and negative sides are exposed to atmospheric pressure. It is sufficient to use a pressure calibrator (one that is capable of creating negative pressure, with the magnitude of this negative pressure being at least one order of magnitude less than the zero point of the gauge) to set the negative pressure side to 100 kPa. Once the pressure is stable, check the zero-point current; adjustments may be necessary if needed ； The zero point of absolute pressure must include atmospheric pressure ； Negative pressure (vacuum level) is a value that measures the pressure below absolute pressure. But corresponding instruments are required to carry out the calibration.