Why we are measuring 4-20ma? Why we are not taking 0-20ma? Plz answer this

1 Answers  

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Explain about relays.. Can we give both AC and DC to the same relay... How it is energising.. Explain its working..

7 Answers   IOCL,

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how to calculate flow by dp transmitter?

4 Answers  

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What are different types of valves?

0 Answers  

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what is zenier barier and what means zone 1,zone 2,and zone 3

2 Answers   Bapco Bahrain Petroleum Company,

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what will be the pressure in tank which has the total level of 2 meters and is filled 1.2 meters ?

4 Answers   Engro,

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What is instrumentation amplifier?

3 Answers  

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An equipment is certified for EEX, IA, IIC, T6, what do you under stand by this.

3 Answers   ADMA OPCO,

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how to measure level under ground tank ? which type of transmitter very accuracy ?

3 Answers   Biocon,

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how to change 4 wire rtd transmitter into a 3 wire rtd transmitter? as our transmitter is working for 4 wire rtd, what should do for working on 3 wire rtd transmitter

1 Answers   HHJ,

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cheapest instru-- PMMC, EDM, rectifier, thermocouple.

3 Answers   ONGC,

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what is the standard controll pressure

1 Answers  

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