| Other Instrumentation Interview Questions |
|| Asked @
|why the derivative in PID is always set to zero?
|WHAT IS MEANT BY SUPERVISORY CONTROL?
|What will the new flow factor if D/P Transmitter is
RE-RANGED from 25" WC to 50" WC
|when we calibrate the DP transmitter at that time which
matrial we used in pressure pump?
|What is the difference between rich gas and lean gas?
|what is the role of proportional in process control?
|plc trouble shootings?
|In 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 ?
|If a control valve is hunting means means if we are giving
50% to the cv, the cv will open at 51% then slowly slwoly
it will reaches 49% , then it will reaches again 50%, this
type of action occured frequntly.. so what to do for solve
this problem. The possible cause is in volume booster or
positioner's relay.. positioner is double acting .. and
make siemens..sipart.The cv is double acting and mounted
for anti surge operation, it having 4 nos. volume booster,
one sov, one positioner, etc..?
|What is the function of a diaphagram
|How to check vortex flow meter is in good condition while
we do not having calibration setup?
|Definition of level
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