If mVolts can drop by resistance of wire as compare to mA,
then how thermocouple mV reaches in CCR as accurate value?

Answer Posted / jayakrishnan unnikrishnan

First upon CCR not receiving any mv,it is receiving only ma.
mv is going to the transmiter and the transmiter giving
output to panel and console.
& voltage drop , Thermo couple extension cable is not a
normal signal cable it is depends on the thermocouple type.
consider K type thermocouple so the extension cable should
be Nickel Aluminium, b'coz Nickel Chromium is the K type.
it will avoid voltage drop.

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Dear Sir/Madam,im going to attend Hpcl written exams on feb 17th in instrumentation stream..can anyone send me the HPCL model papers and pattern of HPCL ....i ve not yet attended anything in HPCL...so i dont know how it comes...so just i need some model test papers and pattern ..pls help me friends...

1645


What is the difference between ff transmitter and non ff transmitter

1983


what is output of FOUNDATION FIELD BUS transmitter

1709


what is cems analyzer explain with principle and drawing ?

1878


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

982






In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

1392


Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?

1575


Why is it necessary to use compensation leg to measure the liquid level in a closed or pressurized tank?

1920


what is the electrical operation procedure for switching on 27.6MVA electric furnace.

1613


in which principle pressure tx,level tx ,flow tx,temp tx ,control valve works?

2704


how to calibrate steam control valve in steam turbine

2831


I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration  So is there any causes biside this or  any  permissives ?

1412


Give 2 application of quartz crystal used for process parameter measurement.

1595


I installed the smartplant instrument v8, but can not be opened, that always said: "INTools 2007 hardlock no found". So Could you help me how to do for that?

1649


What is zone,loop/fire alarm system?

2092