ud23
Advanced Member level 3
![Advanced Member level 3](/styles/images/ranks/glevel3.gif)
I have built the circuit for temperature measurement using the constant current source.Problem is that if lead resistance comes in the circuit then it gives the error in the temperature measurement.I want to achieve a 0.1 deg Celsius accuracy.
I am trying to do is that measure the voltage across the RTD and then Voltage across the RTD 2 and 3 terminal.But for higher temperature values its measurement not comes accurate.
Please tell me what am I doing wrong here?
https://obrazki.elektroda.pl/1369039500_1429016673.jpg
I am trying to do is that measure the voltage across the RTD and then Voltage across the RTD 2 and 3 terminal.But for higher temperature values its measurement not comes accurate.
Please tell me what am I doing wrong here?
https://obrazki.elektroda.pl/1369039500_1429016673.jpg