Explain about 4 wire instrument concept & tell about its wiring fron sensor in Field to PLC panel.Explain with an example?

3 Answers   IOCL,

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what is the meaning of potential free contact. difference between dry and wet contact?

6 Answers   GAIL,

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how we can calibrate level transmiiter in field?

6 Answers  

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Someone please do mail me some instrumentation questions for Hindustan Petroleum test to avinalexander@gmail.com .Really would be gateful if someone could help me

3 Answers   HPCL, Immersion, IOCL,

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How to do ma trim in massflow meter?

2 Answers   Pakistan Steel,

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what is the way of measuring air flow in air duct?explaim instruments used and DP creation in line?

3 Answers  

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Q1]IF THE RANGE FOR FLOW IS -35 TO 125 WHAT WILL BE THE SPAN FOR ABSOLUTE AND FOR NORMAL? Q2]HOW TO CALIBRATE CAPILLARY TYPE LT? Q3]HOW MANY ERROR CALCULATIONS ARE THERE USED IN PROCESS INDUSTRIES? Q4]HOW TO CALIBRATE TEMPERATURE TRANSMITTER? Q5] HOW TO CALIBRATE LEVEL TROLL AND HOW TO CONNECT? Q6]PLEASE TELL ME THE BASIC FOR INSTRUMENTATION WHICH IS APPLIED FOR CALIBRATION AND FOR ALL? PLEASE MAIL THE ANSWER TO honest_yes@yahoo.in

0 Answers   Cegelec, Honeywell,

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HOW TO CONVERT 0-60KG/CM2 PRESSURE TRANSMITTER TO A LEVEL TRANSMITTER? CAN WE ABLE TO DO IT? IF YES HOW TO DO IT BY USING HART?

3 Answers  

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what is the essential difference between DIODE and SCR in term of application.

2 Answers   ADMA OPCO,

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Why using negative voltage in vibration measurement?

2 Answers  

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how works encoder in plc

0 Answers  

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what is the function of 3 way manifold valve in a closed loop system?

1 Answers   Emerson,

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