why we use negative 24vdc to a proximeter

Answer Posted / manish k soni

we r not using negative supply but the 0utput
is set negative and this is ony the company
monopoly

Is This Answer Correct ?    2 Yes 7 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

who's take first position in process in the timing of new installation flow transmitter and control vavle. give the answer with logical trick.

4264


What happen if we install my pressure transmitter below the elevation of pipe in natural gas service?

632


Explain working principle of lvdt?

632


How to convert Differential pressure to flow in TPH

1750


What is zener diode? What is voltage regulator?

641






Hi Friends i need Electronics&Instrumentation Engg question papers for BARC written test by coming 20th May 2008 pls post ur use full info to kkumarei@gmail.com. Or for suggestions pls give one missed call to 9962122264

1509


Give an example where you had aproblem on the job, and tell me how you solved the problem. and the finalvoutcome.

1807


1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling

1958


May I have a brief note above the voltage barriers? Whats is the purpose? Please mail me if you've operational details, mail id: rajkumar.diice@gmail.com

1608


typical loop drawing of a simple feedback control comprising of one transmitter and one control

1564


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

1509


Explain the working principle of lvdt?

699


How to calibrate the flow transmitter

1043


where uses EXe /EXd/Exo/Exn/Exp/Exq/EXia

9328


what is the procedure of O2 sensor(ABB) calibration?

1710