scb68 temperature acquisition

[usuario]

Hello,

I am trying to perform temperature acquisition with a 6062E and a SCB68. Do you know how should the thermocouple wiring be done?

How do I reffer to each channel (assuming the 2 wires of the TC need 2 different ai screws in the SCB68)? Which should be positive and wich negative?

And finally, is there a way to access the CJC reading? (this is less important to me, just for additional info)

Thank you.

[MikeParkin]

Hi Usuario

I have looked at the 6062E and the SCB68 and it appears the datasheets of each one supply a helpful amount of information that could be useful to you. (Particulary the SCB68 datasheet)

https://www.ni.com/docs/en-US/bundle/scb-68-getting-started/page/scb-68-about.html     -     SCB68 datasheet, page 6 onwards

https://www.ni.com/docs/en-US/bundle/370724c/resource/370724c.pdf    -      6062E datasheet

Hopefully this helps.

Any problems let me know.

[JesusG · Accepted solution]

Hi usuario,

fisrt of all, you have to decide differential or singled ended mode as cabling is concerned:

https://www.ni.com/en/shop/data-acquisition/measurement-fundamentals/field-wiring-and-noise-consider...

Differential >> Positive AI (n) and Negative AI (n+8)

RSE >> Positive AI (n) and Negative AI GND

For instance, channel 0 differential mode >> Positive AI (0) pin 68 and Negative AI (8) pin 34.

If you intend to use it RSE mode, read this document:

http://digital.ni.com/public.nsf/allkb/FADEF80B5991F4AB86256FAA006E15EF?OpenDocument 

As regards thermocouple signals, see this.

In order to access CJC value, you must use a property node as shown in the attached screenshot.

Hope this helps!! Saludos.

Jesus

[usuario]

Thanks JesusG, thanks a lot. This is very helpful for me.