Hello,
Thank you for contacting National Instruments!
In most cases, temperature measurements from thermocouples (TCs) becomes flawed from wrong connections to the terminal block or incorrect TC scaling.
I have a few questions.
1. What type of TCs are you using? (J,K,T,E...)
2. Are you sure that you have the positive and negatives connected correctly to the SCXI-1303 terminal block? (Red is always negative with TCs)
3. Have you tried creating a TC virtual channel in MAX rather than using the ready made VI?
4. Are you sure that the scaling of the Ready Made VI matches your TC type?
5. What types of values are you seeing for temperature? How far off are they?
Please let me know the answers to these questions and I can recommmend some thing
s to try. The temperature is only limited by the physical range of the TC, it is not limited by the SCXI-1303.
http://zone.ni.com/devzone/conceptd.nsf/webmain/B886ECA5994AA782862568650068FCEA?opendocument
Regards,
Bill B
Applications Engineer
National Instruments