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what is the calibration standard for pressure and differential pressure
transmitters?
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Answer Posted / jaffer
differential pressure transmitters:
1.both side applied a pneumatic pressure in the h.p&l.p side
check the response on the dp cell.
2.equal pressure on the both side and then transmitters shown
a zero value.
3.upper range value(URL)on the h.p side 10,000mmwc or 1kg/cm2. this value depend on process reqirement.
4.lower range value(LRL)on the l.p side 0 mmwc or 0 kg/cm2.
5.And then change value&change the tag no.
6.check the states of the transmitter. by the help of field calibration devices.
pressure transmitters:
1.the pressure transmitter is only one physical quantity sensing input&applied a input and then same 2,3,4,5,6steps.
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