canu tell me why 4-20 ma and why not this 3-25ma?please
give reason of this value.
Answer Posted / karthik
The Electronic circuits employed in all Instruments require
atleast 3 mA for its actuation so the lowest range is
limited to 4mA & the rest as said by JOSE is exactly correct
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
What are the interlocks we have to check during the start up of LP/HP compressor?
full process of gas turbin?
How u will setup SPI(2007) on Citrix Server (Thin Client Mode)? Plz Justify?
The company where I am working, their is rosemount 5400 series radar type level transmitter, it is meant to show level of filled tank, but along with the level it is showing temperature also, so my question is how a onon-contact type radar type level transmitter can show temperature even if it does not have any contact with the fluid?
What is cut off relay? And why use in PLC and DCS?
i am having information technology branh ....... can i prepare for psu exam
Why flow/pressure transmitter before control valve?
while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?
Can anybody tell me how to select the size of earthing cable for DCS & PLC system.Please tell me any relevant answer here or mail it to me.
Hello to all....I am an Instrumentation Graduate and i am passed out in this year only.. I am unable to find the job in my core instrumentation.. so any boby tell me how to and where to search the job....please...and also tell me i there are any courses offered in the instrumentation stream so i can do it... you can send your suggestions to my mail-id i.e Ganesh20084u@gmail.com ... please..
I want to know the questions asked in ONGC interview(after being selected in the written exam) for Instrumentation branch.Kindly help.
Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.
How to Calibrate Flow Switch in field
How to calculate P,I&D value in PID controller ?
Reason for capillary type dp level transmitter fluctuation