what is the difference between 2 wire and 3 wire RTD-
application wise,cost effectivity?
Answers were Sorted based on User's Feedback
Answer / prashant
in three wire rtd, wire(lead) resistance is compasateed
automatically as per signal cable which is shorted in rtd
probe/sensor.
in two wire rtd we require room temp. compasation. but it
is depend on signal cable length resistance, so we reqire
fix length of signal cable which is lead resistance must
be clculated with room temp. compasation.
Is This Answer Correct ? | 5 Yes | 0 No |
Answer / rk
basically as lenght of wire inc resitance inc.henace a lead compensator is given in 3 wire rtd and gives best results over a far distance from source.
but 2 wire rtd has effect of temp.hence it is used for smaller distance which is not much preffered
Is This Answer Correct ? | 2 Yes | 1 No |
control panel design guidelines
What is inside the PLC panel? How does instruments communicate to DCS computer via PLC? What is the type of wiring in PLC connections? Please answer... Thanks
how to calibrate level transmitter
How to set up the various advanced process controllers, input the proper parameters, and tune those controllers given related control system information.
what is the T/C & RTD mesuremaint?
plz give me the logic for how a pushbuttoon can be worked as atoggle switch i m working with allenbradely/micrologix1200/rslogix500
what is the principle of ultrasonic flowmwter and radar type flowmeter?
Please can anybody tell me the step by step procedure for calibrating the Pr,Lvl,Fl,Temp transmitter on process?
What is the difference between PLC-HMI and DCS as each function of DCS based system is possible in PLC ?
Dead weight tester & comparator for calibration , which is more accurate , what is the application.
1 Answers Bapco Bahrain Petroleum Company,
What is intrinsic safety mean.
Explain why use mmwc unit?