why we use only 4-20 ma signal as AI and not 0-20 ma?

2 Answers   Honeywell, Oil and Gas Jobs,

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How many ohms are required for proper earthing?

0 Answers  

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can someone tell me about electronic speed switch &how it conect with proximittyswitch?(with dgm)

0 Answers  

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Explain the combusion chamber

0 Answers   IFFCO,

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What is TMR

3 Answers  

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what is function of ESD , and how is it work, explain with difination

1 Answers   Bapco Bahrain Petroleum Company, BMB,

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CAN YOU USE MOVING COIL METER FOR MEASURING A.C?

2 Answers   DVC,

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3element

2 Answers  

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what is the advantage of submersible level transmitter compare to ultrasonic level transmitter?

0 Answers  

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Manipulation of dead wt. tester double piston type.

0 Answers   CCIE,

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Air pressure in a pressure vessel can rise or fall at up to 2.5kpa/s.The pressure is sampled every 0.5 seconds.If range of the the pressure indication is 0 to 1500 kPa, what is the max value of the error due to sampling in % of Span

2 Answers  

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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?

2 Answers  

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