what is the difference between active and passive loop ?
Answer Posted / ram
Passive Loop : Two wired loop powered . It is consuming the
power and generates the signal acoording to the process
parameter values or inputs.
Active Loop : External Power supply or separate power
supply and Signals generates either two wire or four wire
concept.
| Is This Answer Correct ? | 11 Yes | 13 No |
Post New Answer View All Answers
What is the purpose of bypass valve across AS valve.
Whatis the reset ofset and control system in instrumentation
In bently nevada vibration monitoring system,what is the reason to maintain the Resistance of the probe + extension cable equal to 95 ohm? If possible explain the basic principle of measurement with detail electronic circuits.
How flow can be measured with dp?
How do you identify between actual alarm and false alarm in a Temperature Transmitter in SCADA based Control System
Good evening all I need a small favour regarding reliance paper i wanna probable sample papers(e&i) of reliance. if any of u have any idea about dis then plz mail me back.i belongs to electronics and instrumentation engg.so i need e&i papers. thanking u....
why I need valve guard and whats different between guard and positioner ??
How to calibration a control valve?
How to calibrate RC Feeder system in thermal power station?,If any instrument available to calibrate it,ple inform me. make:stock,
why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature
why orfice is not used for main steam flow calculation
i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com
A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?
What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...
What is the principle of capacitance type level transmitter?