Interested to Buy Any Domain ? << Click Here >> for more details...
why we use 4-20 mA for calibration of the instruments.why
we cant use 0-20 mA?
- 5 Answers
- 11219 Views
- I also Faced
- E-Mail Answers
Answer Posted / nirmalya basu
In both of the measurement 20ma represents full data and 4ma
or 0ma shows no data.But with 0ma we cant diagnose the wire
breakage in the transmission line but with 4ma we can diagnose
because if this type of fault is occurred then it shows
0ma.Thats why 4 20ma is used.
| Is This Answer Correct ? | 8 Yes | 0 No |
Post New Answer View All Answers
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
In turbine what does term CDP, NI, NH, HSSOC means.
What are primary elements of measuring pressure? Which type of pressure can be measured by these elements?
Q1]IF THE RANGE FOR FLOW IS -35 TO 125 WHAT WILL BE THE SPAN FOR ABSOLUTE AND FOR NORMAL? Q2]HOW TO CALIBRATE CAPILLARY TYPE LT? Q3]HOW MANY ERROR CALCULATIONS ARE THERE USED IN PROCESS INDUSTRIES? Q4]HOW TO CALIBRATE TEMPERATURE TRANSMITTER? Q5] HOW TO CALIBRATE LEVEL TROLL AND HOW TO CONNECT? Q6]PLEASE TELL ME THE BASIC FOR INSTRUMENTATION WHICH IS APPLIED FOR CALIBRATION AND FOR ALL? PLEASE MAIL THE ANSWER TO honest_yes@yahoo.in
What is difference between radial vibration and axial vibration explain in detail .
if my flow is 20000 m3/h than which range of DPT i have to use????
principle of automatic votage regulator
Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,
3. Differentiate between ultrasonic flowmeter and radar type flow meter.
is motorized valve closed when power shutoff?
Differentiate between ultrasonic flowmeter and radar type flow meter
i hav applied for the post of engg. in iocl so please require the past test papers fro instrumentation engg please please help me and send me the papers or tell me the pattern and type of ques asked in examination......
HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with
What is the GK Value in Flowmeter?
dear friends, i have seen flow as the selection critriea in presure guage (bourdon tube) and i would like to know what is the relation between flow and performance of pressure guage other parameters i found in the data sheet are pressure max. 1ksc temperature max. - 50 deg c line size - 80NB operating range - 1ksc pr. guage range - 0-2 ksc thank u,
