Why are the uses 24vdc in industries

0 Answers  

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How to calibrate level transmitter with use of HART?

0 Answers   Samsung,

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Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 Answers  

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why we use 4-20 mA to do calibration of the instruments.why we cant use 0-20 mA?

8 Answers   Emerson, IEM,

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what is the responsibility of an instrument commissioning supervisor

0 Answers   Petrofac,

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how to control motor load with rpm or vfd

1 Answers  

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i have an interview in Qatar Petroleum. So please provide the all details abt fire & gas systems

1 Answers   Qatar Petroleums,

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what is vibration a part of proceess variable? if vibration is a part variables then how we minimize the actual vibration on machine on load,? vision of instrumentation contrl plz ans me IPGDL interview question

0 Answers  

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Can any body help to get Rsemulator 5000 free from internet if possible then give me any link or any help .

0 Answers   Engro,

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List three types Level Transmitters with their working principles

1 Answers   ABB, Bapco Bahrain Petroleum Company,

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few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters

0 Answers   Monnet,

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what is the difference between plc & DCS?

5 Answers   Cheminova, NGIL, Siemens,

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