why do we use 4-20 ma current why cant o-20ma
Answer Posted / chandrasekaran.n
This is only concept of live zero & dead zero.live zero is
4ma.because if any faulty in your sensor are signal
transmitting field cable are your power source fuse failure
you can easily find out that live zero concept.
| Is This Answer Correct ? | 33 Yes | 2 No |
Post New Answer View All Answers
What are primary elements of measuring pressure? Which type of pressure can be measured by these elements?
what is the process for double acting cylinder pneumatic for 32' v/v
i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure
any questions on motor and energy conversions machines?
any one can send me instrumentation previous interview papers? I prepare for MNC Company Interviews? my mail id- Rakesh.Golla@dodsaldxb.ae , and another mail rakesh.gvk@gmail.com
How to check vortex flow meter is in good condition while we do not having calibration setup?
What is zone,loop/fire alarm system?
what are the values of fuel flow rate in various places in boiler.
What is the differerence between hysterisis and linearity.
what is a half wave, full wave, and bridge rectifer.
Why we are using reverse action in displacer types level transmitters on some Vessels?
Calibration procedure for electro magnetic flow meter
How would you choose differential range?
what is moisture probe? What are there types? What is there working principle and how they works? guys this is one of technical question I had ask in interview. If you know its answer please let me know. The interviewers were more interested in microwave moisture probe, so if you find its any link please just forward me on my mail id.avinash1200@gmail.com Thanks in advance.
What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).