why we use 4-20 mA to do calibration of the instruments.why
we cant use 0-20 mA?
Answer Posted / naresh yadav
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
.04 A x 250 ohms = 1 V
.2 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 ? | 21 Yes | 35 No |
Post New Answer View All Answers
what can of fault ofently come in vibration mesurement?
Give Detail information about plc,dcs,and scada system?
How many interlocks at turbine? Plz explain briefly
What is instrumentation control?
what effects a surging can produce in the compressor
What is 3 element control system
I have energy meter for educational project having 0.5s class but my friend need 0.2s class meter , which one is good for that purpose and what is the actual difference of that two classes , need very easy example also.??
Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?
Speedtronic system .
hello sir/madam, I,Subramanian need 5yrs placement papers of officer trainee of Instrumentation technology.pls send to this mail id mani_nxtgen@yahoo.co.in please do the needful. with regards, subramanian.v
Why we are using DPT(Differential Pressure Transmitter) in separator instead of level trasmitter?
what is cold loop? difference between hot and cold loop?
the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove
Conversions
What is voltage regulator?