Un-Answered Questions { Instrumentation }

How we calculate orifice plat size???

1020


I wnat to practice more online type questions .so will you show them me to take a practice test?

915


what is span value and zero ? and how set ?

1059


Who to difference between analog in & analog out in dcs?

1019


need to calculate flow rate with the help of dp range and orifice bore dia and size. range is 0 to 400 inwc and orifice size is 12 inch 150 # rf and bore dia is 7.180 inch. need to calculation for flow rate

874


the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove

1122


How to decrease opening & closing time of on/off valve?

962


Why flow/pressure transmitter before control valve?

1052


is motorized valve closed when power shutoff?

1153


What is three element in drum level?

917


What is 3 element control system

1005


A valve in series with an orifice plate (DP transmitter), is aligned for constant pressure in the pipeline, if there is an error dx, How to align it in process.

858


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?

869


What denotes the 5/8mm in the 3300XL 5/8mm proximitor probe?

977


it is possible to check the fail safe condition in pressure transmitter. if possible how?

886