Interested to Buy Any Domain ? << Click Here >> for more details...
why we use 4-20 mA to do calibration of the instruments.why
we cant use 0-20 mA?
- 8 Answers
- 24289 Views
- Emerson, IEM, I also Faced
- E-Mail Answers
Answer Posted / sathish r
Module require 1-5 v for further processing thats why we
use 4 - 20 mA because with 250 ohms resistance we can
easily convert 4 - 20 mA into 1 - 5 V
.004 A x 250 ohms = 1 V
.02 A x 250 ohms = 5 V
if we use 0 - 20 mA it converts 0 - 5 v but we required 1 -
5 v for further processing in module.
| Is This Answer Correct ? | 9 Yes | 19 No |
Post New Answer View All Answers
In Safe Guarding test what means by "Failed to Danger" ?
Galvanizing.
In which principles tx ,pressure gauge,Temp gauge,control valve works?
what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?
what is the diffrence between pressure safety valve & pressure relief valve....pls
What is intrinsically safe system?
describe flow nozzel principle?
How servomotor controls throttle valve of TURBINE?
In my company plc based winders are operated. one day there was a data transmission failure alarm shown on pc. as per sir instruction we have reset master plc but winders were not triped and alarm gone. so what master plc do?
Draw a great bridge circuit.
Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?
in valve is constructed as per SME B 16.34, then which standard is used for fire testing of valve?.
A valve in series with an orifice plate (DP transmitter), is aligned for constant pressure in the pipeline, if there is an error dx, How to align it in process.
How to calibrate H2s Dectector
DEAR SIR/MADAM MY NAME IS ARKAPROVA BHATTACHARYYA.I AM A FRESHER INSTRUMENTATION ENGINEER.CAN YOU PLEASE SEND SOME QUESTION PAPERS OF GRADUATE ENGINEER TRAINEE EXAM OF DVC(DAMODAR VALLY CORPORATION).MY EMAIL IDs ARE arka_aec@rediffmail.com.
