- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
hello, I am using an external opamp for a K typethermocouple, I am using thmocouple component in Psoc Creator, the question is, how can I connect a NTC for cold junction compensation? is there a code example?
Thanks
Henry
Solved! Go to Solution.
- Labels:
-
PSoC 4 Architecture
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Henry,
I don't think that PSoC provides cold junction compensation. For cold junction compensation one needs something like MAX31855 module, which has calibrated voltage generator inside, which "fakes" cold junction voltage:
https://www.adafruit.com/product/269
https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf
(Notice 5V->3.3V LDO at the top.)
I would like to warn you that there are cheap clones of that module on the Internet, which are counterfeit. They are typically 3.3V only, have wrong PCB layout and some even come with a fake chip (that is what I got, you can google fake chip series).
/odissey1
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Henry,
I don't think that PSoC provides cold junction compensation. For cold junction compensation one needs something like MAX31855 module, which has calibrated voltage generator inside, which "fakes" cold junction voltage:
https://www.adafruit.com/product/269
https://datasheets.maximintegrated.com/en/ds/MAX31855.pdf
(Notice 5V->3.3V LDO at the top.)
I would like to warn you that there are cheap clones of that module on the Internet, which are counterfeit. They are typically 3.3V only, have wrong PCB layout and some even come with a fake chip (that is what I got, you can google fake chip series).
/odissey1