what is the difference between E/P positioner and I/P positioner in control valve , in which application the respective positioner are used in.
ABB,
1 5642i want to calibrate a transmitter in the range of -100 to 300 mmwc. How it is possible to measure -100 to 300?.
2 4696what is the difference between mmhg & mmwc?. i want to calibrate a transmitter in the range of -100 to 300 mmwc. Which is the reference for calibrate the Tx,if mmwc not available?. Is it mmhg or mmho2?.
UPL,
3 45482in transmiters(rose mount) how to check output 4-20ma ? and input 24v? i need exact explanation?
2 6634Post New Instrumentation Questions
kindly sent some demo question and answer
Definition of reverse and acting controllers:
tell me the field & lab calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter, temperature transmitter, temperature indicator, flow indicator, level indicator, control valve, thermocouple, pressure indicator (digital & analogue),
Sir, I want junior executive, Instrumentation question papaer for IOCL, Plz send to arabinda.ghosh83@gmail.com
where uses EXe /EXd/Exo/Exn/Exp/Exq/EXia
IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?
3. Differentiate between ultrasonic flowmeter and radar type flow meter.
what is the difference between scaler and vector drive
what is the difference between profibus and controlnet networking.
(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.
How does work A temperature valve or fv control valve in process plz brief me
How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer
what is cold loop? difference between hot and cold loop?
What is Erosion in a control valve?
Calibration of controller (pneumatic)