AI835A setup for cold junction compensation on channel 8
I'm using type K thermocouple sensors on a AI835A IO-module with a cold junction compensation on channel 8 using a PT100.
How should I configure the IO settings? Especially, I'm confused about the parameters Cold junction compensation channel 1-8. I have the following choices:
-Measured via channel 8
-Remote Cold jumc comp
-Fixed as parameter
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In metro on mobile, will answer in short,
CJC via ch 8 means connect some rtd(temp sensor) at ch8 and that temp get compensated against each channel measuring temprature.(for real time accurate measurement)
CJC fixed as parameter means you can input some value fixed e.g. 25 'c room temp. That will get deducted from temp. Measured at each channel.
Remote CJC is using some internal variable to compensate temp. Measured at each channel. Not very much sure about remote CJC need to check manual.
please note using fixed or remote cjc you can save one channel per module for temp measurement.
Hope that helps.