Answer Posted / srewt
superheater
air regulator
manhole
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Name different parts of a pressure gauge. Explain the use of hair spring in the pressure gauge.
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Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?
what is easiest way to read STL language in PLC?
why direct mounted pressure transmitters is always installed with DBB ( double bleed block) valve in process line or top of the tanks ?
how to calculate range of level transmitter?
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How to calibrate level transmitter with use of HART?
A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?
Do you have reference list?
How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?
how we are selecting instuments by differentiating certain instruments in 4 to 20 ma range and certain in 1 to 5 v dc
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WHAT IS THE CAM POSITION IN CONTROL VALVE POSITIONER ? WHY IT IS USED?
