What is pipe schedule? What are all effects its having in the valve? how do we take care of pipe sch in case if the customer dint specify in the data sheet. What we need assume and in what basis?
3 6531What is difference between flame retardant & flame resistance cable? Among which type of cable is used for ESD & Fire and Gas system application?
1 7811Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal.
1 6046While preparing the graphic diagrams trend display, 3 types of trends are prepared by Yokogawa system vender. These are for process variable, manipulated variable & set point variable. Why these 3 trends are required? Explain the purpose of these 3 trends.
1 3243What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?
3443Why do we need to install hook-up line differential pressure type level transmitter when the differential pressure type level transmitter with capillary are available?
2 8673How can we say that accuracy of measurement increases by using 3 or 4 wire RTD? because for example: If resistance of RTD element is say r ohms and Resistance of the cable from transmitter to RTD is R ohms And if 4 wire RTD is used, ____._____________________ R ohms | |_____._____________________ R ohms / \ / r ohms \ \ | |______.__________________ R Ohms | |_______._________________ R ohms Then the actual resistance measured will be: Total = r + R/2 + R/2 = r +R Ohms Note: r+R instead of r ohms. hence error
2 4372Post New Instrumentation Questions
what do u mean by compensation n pid tunning?in pid tunning what you tunned?is it possible 2 tune p i d
sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com
Can anybody tell me how to select the size of earthing cable for DCS & PLC system.Please tell me any relevant answer here or mail it to me.
How signals can be taken through modbus?
in valve is constructed as per SME B 16.34, then which standard is used for fire testing of valve?.
i hav applied for the post of engg. in iocl so please require the past test papers fro instrumentation engg please please help me and send me the papers or tell me the pattern and type of ques asked in examination......
Turbidity analyzer working principle ?
How hart protocol can be connected with control valves?
Can Any body tell me how to check Modbus Settings in ER300N L&T trivector meter?
applications of plc in printing and packaging?
How to calibrate the flow transmitter
Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...
what is interface level measurement.who can calibrate interface level measurement transmitter online
how to calculate control valve bonnet size?? or how to select its material?
key phaser where is use and work
