What is two wire system and how it work

2 Answers   Bhel, IFFCO,

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i need some objective type questions in instrumentation

0 Answers  

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generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

2 Answers  

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Why we are using reverse action in displacer types level transmitters on some Vessels?

0 Answers  

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what is pressure control

1 Answers   GNFC, IBM, Privi Organics,

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How can we check Zero of DP type Level Transmitter onside?

7 Answers   Birla,

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Emergency Shutdown Systems/ Plant Shutdown System.

0 Answers   CCIE,

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How to Calibrate Temperature Switch in field

0 Answers  

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What is the SCAN time of a DCS/PLC? What is the typical value for scan time of DCS and PLC?

6 Answers   Essar, Gasco, Siemens,

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what is difference btween rotameter and orifice plate?

3 Answers  

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How to convert ma to mv? Resistance 250 ohm is connected in series or Parallel?

3 Answers   ISRO,

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Shall we get the reading on level transmitter only by termination,without commissioning?

1 Answers  

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