In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.
1503(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.
3450Post New Instrumentation Questions
Whatis the reset ofset and control system in instrumentation
Explain why plc require in analog input 4-20amp & 0-10 volt?
Specify ideal accuracy of flow element like orifice plate, Ventury, Annubar. Ultrasonic flow meter etc.
what would be the minimum flow rate that we can measure on rotameter..?
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?
How to calibrate capillary type level transmitter
How will you calibrate PID controller? explain with example.
In VVVF DRIVES VOLTAGE IS ALSO VARY WITH THE FREQUENCY. HOW? WHAT IS THE DIRECT FORMULA RELATING THESE TWO.
what are the use of belew gear in general ??
How to convert milliampares into flow??
what is wave length were using ?
What is the exact differences between HART,FOUNDATION FIELDBUS,PROFIBUS?
please tell no. & add. of consultancy who recruit me in power plant as instrumen engg. present i m working in power plant as ass.t instrument engg. thanku mahesh 09226562826
What is the diffrence between digital signal processing and discrete signal processing?
IN CONTROL VALVE SPECIFICATIONS GENERALLY TERM " DE- 200" ."DM -400"USED,, WHAT IS DE/ DM STANDS FOR?
