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


Please Help Members By Posting Answers For Below Questions

ORP sensor working principle?

1527


what is vibration a part of proceess variable? if vibration is a part variables then how we minimize the actual vibration on machine on load,? vision of instrumentation contrl plz ans me IPGDL interview question

1507


what is easiest way to read STL language in PLC?

2662


How to Calibrate Vibration Probe (Axial, Redial) in field

711


Draw bode plot of any transfer function. Why is plotting bode necessary?

1867






selection criteria of control valve? and selection criteria of actuator explain in brief?

3651


Why mixer nd grinder Is example of constant torque load not variable torque load ???

1493


how to work static pressure sensore how to work dpt

1405


Whether the DI, DOs shields can be connected with Analog Input Shield Earthpit?

1422


Difference between ultra sonic flow meter

1551


while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?

1706


how we are selecting instuments by differentiating certain instruments in 4 to 20 ma range and certain in 1 to 5 v dc

1646


Why flow/pressure transmitter before control valve?

1056


why we take %i0.0 as input for twido plc

1656


I am using 971 Enraf radar level transmitter for LPG tanks ,the tank side indicator gives the error code 999999999FL can any body give me any diagnostic for this issue?

1767