Regarding MOS (maintenance override switch), I want to know its function and its state ( 1 or 0 when not activated ). An example will be very helpful..thank you.

1 Answers  

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what is commissioning & pre commissioning , explain with difination

2 Answers   Bapco Bahrain Petroleum Company, Shell,

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why metallic housing is provided of solenoid valve.

1 Answers   HPCL,

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I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration  So is there any causes biside this or  any  permissives ?

0 Answers  

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what is load line in control valve?

3 Answers   Boral, Qatar Petroleums,

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why can't we use 5-20mA standard or some other instead of 4- 20mA?

6 Answers   Emerson,

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how to check the leak in thermowells

1 Answers  

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i want interview questions about PROCESS CONTROL INSTRUMENTATION , SENSORS AND TRANSDUCERS IF ANY BADY KNOW ABOUT THAT PLEASE SEND TO MY MAIL karumudi1003@gmail.com

8 Answers   Honeywell, Reliance,

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I have transmitter of range -20 to -5 kpa.if it is possible to zero trim with atmospheric pressure,means HP and lp having no pressure...what will get after zero trim and it is the right way.....plz give me reply ....

3 Answers   KOC,

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What is open loop checking and close loop checking

1 Answers   BARC, NTPC,

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god evening sir i am studying m.sc(tech)electronics &instrumention.am i elegible to all industies

0 Answers  

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A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

0 Answers  

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