how to calibrate absolute pressure transmitter
Answers were Sorted based on User's Feedback
Answer / todd
You connect it to a vacuum pump with a calibrated absolute
pressure gauge (electronic or mechanical). compare the two
readings. adjust as needed. Normal output is 4-20. 4 being a
perfect vacuum . 20 ma being the upper end of your range .
| Is This Answer Correct ? | 29 Yes | 13 No |
Answer / fermin
I have a Pressure Transmitter Fieldbus Type (FF) with the range of 0 to 1000 mmHg_0C Absolute according to the data sheet,it is correct? that 0 to 100 mmHg is a absolute pressure?
And how to calibrate if it is absolute.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / khan channar
Why absolute pressure gives the value while not in process? anybody knows about it then please share with me thanks.....
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / amresh dhiman
First connect 24 dc supply to the absolute Pr transmitter
it will show 20 ma as its working against atmospheric pressure i.e. against 760 mm of Hg
after this you apply a vacuum pressure of 760 mm Hg & connect multi meter in series, you will find 4 ma ,In DCS you have to scaling like that 20 mA = 0mm ,& 4 mA = 760MM
I think this is the best procedure
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / nadeem iqbal
Absolute pressure transmitter never give 4 MA while calibration .bcoz when u will apply vacuum pressure almost 4.9ma will come but exact 4 not possible ,if any body can do this let me know and tell the procedure ,i shall be grateful that person,
| Is This Answer Correct ? | 1 Yes | 3 No |
Answer / hitendra
procedure of absolute pressure transmitter:-
power supply:- I/P 24v dc to transmitter
multimitter connect with transmitter in series position
now when transmitter in atmospheric,transmitter o/p is 20ma
when applied 0.8to0.9kg transmitter o/p is 4ma
| Is This Answer Correct ? | 6 Yes | 13 No |
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