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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 7589What is difference between flame retardant & flame resistance cable? Among which type of cable is used for ESD & Fire and Gas system application?
1 8447Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal.
1 6699While 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 4052What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?
3936Why 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 9545How 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 5322Post New Instrumentation Questions
Why plc require in analog input 4-20amp & 0-10 volt?
Draw a great bridge circuit.
What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem?
what effects a surging can produce in the compressor
List three types Level Switches with their working principles
In turbine what does term CDP, NI, NH, HSSOC means.
How u will setup SPI(2007) on Citrix Server (Thin Client Mode)? Plz Justify?
Explain the use of hair spring in the pressure gauge.
how the arrangement of equipments done in control room
why orfice is not used for main steam flow calculation
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
Explain Gas Turbine startup and shutdown sequences
HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with
I have a Control VAlve having size of 2 ".Only the known parameter is Pressure drop . Its 2 Kg. Then How to calculate control valve sizing means Cv.
Decibel.
