Interested to Buy Any Domain ? << Click Here >> for more details...
Why we use 4 to 20 mA, (This is International Standard)
instaed of this can we use 4-16, or 4-24 or 3- 15 or any
other range
- 13 Answers
- 32952 Views
- ONGC, I also Faced
- E-Mail Answers
Answer Posted / elayaraja
We use 4-20 mA range as a standard bcoz we know very well
when there is no input i.e. output must be 4 mA otherwise
instrument is giving wrong output
| Is This Answer Correct ? | 1 Yes | 22 No |
Post New Answer View All Answers
How to calibrate level transmitter with use of HART?
Explain the combusion chamber
what are the values of fuel flow rate in various places in boiler.
whatis range of marcury filled tempereture gague
Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...
A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?
Explain bernoulli’s theorem.
Why even multiple power supplu r used in instrumentation system?
Which type of pressure can be measured by primary elements?
Can any body tell me about SAP MAINTINANCE MODULE. WHAT IS its function and application. And study material Source about it. I shall be very thankful.
what is a vortex flow meter,mass flow meter and electromagnetic flow meter.particular use of this.means in which condition particular meter is used.
What is offset in a control system.
i am preparing for BARC ,so plz mail me how to prepare for BARC. ALSO IF POSIBLE SOME RELATED QUESTIONS. MY MAIL ID IS khushi_4uall2003@yahoo.co.in
Which is your favourite subject & explain any one topic of it.
how to design orifice plate?what is the equation?
