if the neutral and ground of ups voltege are connected together in the source itslef then why the voltege b/w neutral and ground comes positive in some other destination inspite of having earth pit. how can we mimmise this?
MPL,
1 2327How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.
1617I want to know about DDCMIS in detail ? please explain it. Also give name of reference books in which it is explained in detail in very simple manner.
3292regarding level tx i would like to know how to select the range of the level transmitter in a closed drum(steam drum or deaerator)?
1 6297there is one orifice plate already installed on 3" line, but my previous engineer(who is not working here) removed that tx, but now i want to take it in to the process, so now what i have to do now? flow fluid is hytherm oil of temp. 260deg & pressure is 3bar.
2 4422hi this is noor i wnt know the procedure and precations errection for PRESSURE AND DP transmitters? how to take impusle line for level and flow?(water and steam) impulse line sizes? and type of material ? plz give me answer / reffer any website ? to me "mail2noor.hyd@gmail.com"
1 3322What is the basic principle of vibration measurement by BENTLY NEVADA vibration measurement system? and Why it gives the -ve voltage output?
14 130573i want know about capillary type LT transmitter installation. we can install any location in between to HP and LP leg?
2 9918Post New Instrumentation Questions
what is performance test.need defination
i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com
how u choose thermowell lenght n pnumatic C/v size?
selection criteria of control valve? and selection criteria of actuator explain in brief?
what happen if i increase height of displacer type LT.accuracy or sensitivity are affected.why?
What are primary elements of measuring pressure? Which type of pressure can be measured by these elements?
How is automatic reference junction compensation carried out in temperature recorders?
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......
how to check earthing,what is minum ohms for proper earthing
send me model hpcl questions pleas..........my mail id mohideen.dharvesh@gmail.com
How is PH sensor works ?
Which tank weighing system is better to install (Accuracy point of view) 1) Tank weighing system with 3 load cell or 2) Tank weighing system with 4 Load cell
What is shielding effect?
What is furnace draft control?
What is Positive Calibration and Negative Calibration?
