What is the use of +/- 20ma in analog measurement,and which instrument gives +/-20ma output

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i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com

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i have one absolute pressure transmitter for the range is -400mmhg to 400mmhg. If i do the zero trim at atmosphere the transmitter should be give 4ma or 12ma? which one is correct?

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pls provide me syllabus and old question paper of instrumentation engineering for GET(JSPL)

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What are the interlocks we have to check during the start up of LP/HP compressor?

0 Answers   Hamsco,

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What do you need to consider when installing a flowmeter

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what is wave length were using ?

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The DCS stand for________________________. it is composed of the following major components: a:______________ b:______________ c:______________ d:______________

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How oil line flow measured?eplain about instruments used and working principle?

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If the vibration probe near to the shaft,then output voltage will be decreased r increased?How?

1 Answers   Amtek, Hamsco, IJT,

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How many are the types of instrument cables in terms of No. of pair.

0 Answers   CCIE, Samsung,

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What for barriers are used in DCS & PLC systems?

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