Answer / gopalakrishnan

Its a set of rules and regulations for communication for
both DCS and PLC.

Answer / indrajit.p

Protocol is a set of rule following which, the
communications take place. This communication can be
between field instrument and controller like DCS, PLC or
within LAN, WAN, VPN etc....

Answer / dineshkannan

that is protocalmean by range in signal to filed to
marshaling cabinet .in distrubutdd control system and
program logic controller ....

What is difference between profibus and modbus communication

2 Answers   GMR,

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sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com

0 Answers   ONGC,

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what is the difference between mmhg & mmwc?. i want to calibrate a transmitter in the range of -100 to 300 mmwc. Which is the reference for calibrate the Tx,if mmwc not available?. Is it mmhg or mmho2?.

3 Answers   UPL,

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what is formula mv convert to temperture

4 Answers   Sterlite,

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i have one tank of 500mm height, which is in under vacuum of 735 mmHg, I want measure level of the same using DPT , SO WHAT WILL BE THE URV & LRV, DENSITY OF THE TANK FLUID IS 0.95. is there necessary to fill the LP side with fluid.

7 Answers  

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Explain the working of rota meter.

0 Answers  

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what is lead lag compensator and for wat v using that???

3 Answers  

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why we use -ve voltages in vibration prob?

1 Answers  

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What is a PID controller and how can it to applied to our everyday life?

4 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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how to calibrate mass flow meter (Coriolis)? Example calibration range: 0 to 2500 kg/hr line size 3" fluid: Etheline glycol (MEG)

0 Answers   Honeywell,

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what is thermocouple output

7 Answers   IPCL,

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