Answer / chandramauli sinha

Dry contact is volt free contact. for e.g- relay contacts .

Wet Contact is voltage at the relay contacts.

Answer / jith

dry contact is the one which doesnot have internal soure of
energy

what is air to open and air to close control valve and difference btwn this...and how to measure milli amp by this...and what is the role of positioner and i/p converter in this..plz help me

2 Answers   HCL, SOC,

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I have energy meter for educational project having 0.5s class but my friend need 0.2s class meter , which one is good for that purpose and what is the actual difference of that two classes , need very easy example also.??

0 Answers   BBS,

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which type of signal used in instrument?

3 Answers   Emco, Makson, Sail, TATA,

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field bus transmitter calibration procedure tell me

0 Answers   BAP,

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Dear sir i m presently working in power plant nd my question is if any pump give flow 18tph then how would i know that how much range flow tx installed their flow line for flow measurement plz give me ans

1 Answers   HPSL, Infotech,

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what is the minimum power (P=VI)to produce a spark?

0 Answers  

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how to check diode wheather it is working or not by using multimeter?

3 Answers  

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what step is taken for ESD ( emergency shut down) in DCS REPLY to hashimka20009@gmail.com

0 Answers   Bosch, Eskom, Sabic,

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Why the Proximitor supply should be Negative voltage? Why should not we give Positive voltage to the Transducer?

6 Answers   Moser Baer,

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What are securities of turbine?

1 Answers  

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relation between flow and differential pressure.

7 Answers   ABB,

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Which type of diagphram use in costic line,DM water line,natural gas line,oil line?

0 Answers   Hindustan Zinc,

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