SCB 68 - Measure Temperature with thermocouple type K single ended

[I2thevo]

Hello all,

I want to use a thermocouple to measure the Temperature of a heater. Referring to the  "SCB 68 User Manual for Advanced Functions" (https://www.ni.com/docs/en-US/bundle/scb-68-features/resource/372551a.pdf)  we installed a resistor at position A and connected the thermocouple single ended as shown on page 4-6.

My Problem ist: Is this installation correct?

I dont really understand the funcion of the resistor and how to measure the temperature now. When i want to measure the temperature with MAX, he expect a differential-measurement.

Thank you for your help.

Best regards

Ivo

[HeinzG.]

Hey Ivo,

thanks for adding the manual. You have to connect a thermocouple differential. This means AI0(+) and AI8(-), instead of connecting it to GND. Here you find the expaination of the differences (german):

https://www.ni.com/en/shop/data-acquisition/how-to-measure-voltage--current--and-power.html

Hope this helps

Kind regards

Heinz