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Answer Posted / sikandar mehra
to differentiate live and dead zero.........
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how radio frequency level probes works with its controller ? what is its principle ? pls give me brief explanation?
Why MUX JB's are using only Temperature Element in Fundation field bus?
what are the diff. in servo and regulatory control?
key exchanges in wpa,wpa2,tls
Why ac supply load cell is used? Can we use the dc supply load cell?
i have done DAE in Instrumentation and Process Control. i have applied for an apprentice training in chemical company after three day my interview will be conduct but i need more information about industrial process control and controller. my e mail is imran_dilsetu@yahoo.com please tell me interview question relative to instrumentation ?
we have a s-5 simense plc having op7 .recently on op7 showing error 1.plc not present 2. DB error frequently. can u have any solution . please send me.
How we calculate orifice plat size???
Which Signal hart communicator work? If there any signal change when hart connect while transmitter in line ?
what diffrence b/w plc s7200,300,400
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
what is basic difference between motion balance and force balance in pneumatic instrument?
What you mean by multi stage control vavles?
it is possible to check the fail safe condition in pressure transmitter. if possible how?
In turbine what does term CDP, NH, HSSOC means.
