Answer / thompson

Thermowells are used to protect thermocouples from the process

why is not useing in boiler skin thermocople

1 Answers   KNPC,

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Dear Sir/Madam, I am attending an interview for ETs in BHEL. I have cleared my written test under Electronics (Instrumentation). This is the first time I am appearing for an interview. Can any one who has attended the interview earlier give me a clue to face the interview. With regards Sindhu

2 Answers   Siemens,

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why the output sugnal is 4-20 ma and not 4-25 ma?

5 Answers  

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In 2 wire transmitter 1 wire is used for power and other is used for signal( 4-20)ma In 4 wire transmitter 2 wires are used for power and 2 wires are used for signal (4-20)ma . but my question is "what is the criteria or parameters we have to consider while selecting these transmitters for eg( distance, safety zones etc.

1 Answers  

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yokogawa Temperature transmitter showing Error 15 which is Reverse Cal Fail (confirmation calculation result is bad) in manual they mentioned reasion That the output goes to the value set by hardware failure mode jumper. How can solve this problem ? anybody can say solution

1 Answers   GTL,

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diff bw range and span?

3 Answers  

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What is the exact output of eddy current proximity probe? For vibration mesurment?

2 Answers  

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What is the difference between instrument earthing and normal earthing? and why is it necessary to do so?

3 Answers   Atul,

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what is diffrence between cascade & three element system.

3 Answers  

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What properties or parameters to be taken into consideration for protection while selection of Dcs controller.

1 Answers   JPL,

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How to connect field devices to PLC and DCS using a FIELD BUS, DP,MOD BUS(please tell me any extra interfce or adopters need in this case if we use remote i/o s)

3 Answers  

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What is an instrumentation amplifier? How is it better than a differential amplifier when handling outputs from a wheatstone's bridge?

2 Answers   Honeywell,

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