How to get Cv of control valve having following parameter ,i.e inlet pressure 4.5kg/cm2 outlet pressure 1 kg/cm2 specific gravity 0.808
3 6734how radio frequency level probes works with its controller ? what is its principle ? pls give me brief explanation?
1887why generation of syncronized generator increases when frequency of grid is less then 50Hz & generation decreases when grid frequency goes up from 50 Hz, as comparision with set value entered in govering panel?
1 3836Hi..i am B.E. (elect.&comm.)..i m workini in a bio mass power plant as inst. Engg. I want 2 know about growth in big power plant sector..is this field is good 4 me ..i m electronics engg..? Plz plz reply..
2 5667how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?
5670In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class.
1 2526In case of Transmitter's(e.g.Ultrasonic Flow meter ) we have an normal practise of selction of upstream and downstream distance such as (20D and 5D ).can anyone please let me know whow to calculate "D" ?? i guess it refers to pipe thickness is t right ?
2 4740a flow transmitter [range-0-400mbar] connected in process line. please explain me how to calibrate the flow transmitter , & how to do static error
L&T,
2281Post New Instrumentation Questions
What is the use of GMV in turbine?
In turbine what does term CDP, NI, NH, HSSOC means.
What is PDS and PDMS ?
how to calibrate load cell
Why grounding is necessary? Give example with diagram.
what does the ratio 800-400-300-200/1-1-1-1-1 in the specification of current transformer indicates?
what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?
HOW TO SOLVE PROBLEM WITH ENRAF LEVEL TRANSMITTER 854 ATG THAT PASSWARD DO NOT Exist INTO TRANSMITTER TO ADJUST LEVEL WITH PORTABLE PET 847, WRITTEN WRONG PASSWORD , I AM SURE THAT DEFAULT PASSWARD (W2=ENRAF2) IS THIS TRANSMITTER NEED TO REPLACE SOFTWARE AND HOW?
What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?
which type of zones used for boiler? & why ?
If a warning lamp will operate with the ground circuit is bypassed with a jumper wire to ground, what should you check?
which type of signal used in instrument?
Why humidity limit is 30 to 55 % for raw material storage?
how to measure oxygen which methods are using?
PLEASE PROVIDE SAMPLES OF CHEVRON SKILL TESTS