How do you calibration D.P transmitter? ?
Answer Posted / abhishek chourey
DP transmitter can be calibrate by two type 1st loop & 2nd isolate in both calibration we need pressure calibrator that should be calibrate by authorized laboratory.
loop calibration:- in this calibration pressure apply to DP transmitter set the pressure on Calibrator and check on display of DP transmitter.
Isolation Calibration:- output measure in form of 4-20 mA and calculate 4-20 with respect to full range of Instrument.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
how u calibrate pneumatic n motorized c/v?
what deference between panel earth and systemearth
In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.
what is the imbustion control loop
Hi Friends i need Electronics&Instrumentation Engg question papers for BARC written test by coming 20th May 2008 pls post ur use full info to kkumarei@gmail.com. Or for suggestions pls give one missed call to 9962122264
State some of balance principle’ advantages?
how many pulses are required by a ac induction servo motor of 4 poles with 50 Hz frequency to rotate by 1 degree?
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
flow transmeter accuracy 0.075% of full scale & find ucertainty is 0.025 % so what is maximum limit band of uncertainty
you are on site,the plant trips,you are approached by operations,what do you do?
Explain plc level and its type?
What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem?
What is instrumentation control?
In Safe Guarding test what means by "Failed to Danger" ?
what is SIL 1 2 3