Related to control system, What is difference between 4-20
mA active & 4-20 mA pasive signal.



Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal...

Answer / janes

4-20mA Active : 2 wire device. same pair of wire is used
for the Power supply and Output 4-20 mA Signal.
4-20mA Pasive : 4 wire Device. Device having external power
supply -110 Vac / 230 Vac / 24 Vdc and generate the 4-20mA.

Is This Answer Correct ?    32 Yes 0 No

Post New Answer

More Instrumentation Interview Questions

Why Instrumentation Air Compressor called as Instrumentation Air compressor?pls dont just tell its trasferring IA to all transmitter,valves.I need exact reason, please......................

2 Answers  


what is the field bus calble ? what are diffrences in orang colur cable and black coular calble ?

0 Answers   ABB, Yokogawa,


Sir, I am working as a Instrument Engineer in Grasim Industries. Can any body provide question answer for interview purpose

0 Answers   Grasim,


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

0 Answers  


how is work pressure switch& level switch?what is the principle of this?

0 Answers   Binani,






i want interview questions about PROCESS CONTROL INSTRUMENTATION , SENSORS AND TRANSDUCERS IF ANY BADY KNOW ABOUT THAT PLEASE SEND TO MY MAIL karumudi1003@gmail.com

8 Answers   Honeywell, Reliance,


1 How to calculate dp transmitter steam and water? 2 impulse line for liquid steam and gas

1 Answers   Sitara Chemical Industries,


which type inter lock use in petrochemical refinery,and oil & gas?

0 Answers  


Name and describe at least 4 status indicators, typically found on a PLC

2 Answers  


whats the reason for control valve not installed -90degree (down position)

1 Answers  


is motorized valve closed when power shutoff?

0 Answers   Unilever,


in my company organisation in plan to take new PLC system for replacing old relay system , for that what I/P needsd to submit to the system house of PLC supplier?

1 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)