USB-2408-2AO

[tcairns]

What is the Accuracy formula for the thermocouple for the USB-2408-2AO?  1% of reading + 1°C?  If I was to measure -100°C what would my tolerance be for type J thermocouple?

[Fausto]

Hello @tcairns.

An accuracy formula nor a table of the full temperature range are not available.  At -100°C, a typical accuracy error of +/-1% would be reasonable.  You will also need to add the error of your thermocouple as well.  The thermocouple vendor typically provides that information.

Regards,

Fausto

[tcairns]

Could you use the forecast function in excel to get the tolerance values for each temperature range?

 

[Fausto]

It is nonlinear.  If your tests will always be at a given temperature, with the same USB-2408-2AO module, and the same thermocouples, then you can measure and create your own custom table.