Specifications MCC USB-TEMP and USB-TEMP-AI

[Manel Gasulla]

I can see significant differences in the temperature specifications of these two models, with the USB-TEMP-AI module being worse. Since they sare the same measurement principles, it seems they should look the same.

Regards,

Manel

USB_TEMP_TC_series_data.pdf

[DAQman]

The designs are similar but different. Reviewing the thermocouple specs, the USB-TC-AI has more in common with the USB-TEMP-AI than the USB-TEMP.

https://files.digilent.com/manuals/USB-TEMP-AI.pdf

https://files.digilent.com/manuals/USB-TC-AI.pdf

[Manel Gasulla]

The USB-TC-AI is not offered in the Digilent website, although it appears in the Series Datasheet.

On the other hand, the USB-TEMP and USB-TEMP-AI present an identical Functional Block Diagram in Fig. 1 of the manual, with respect to the temperature measurements. The temperature measurement descriptions are also identical in the manual. The only difference is that the USB-TEMP-AI model substitute 4 temperature channels of the USB-TEMP model by 4 analog input voltage channels. So, I would expect the same performance about the temperature measurements. You can find significant differences not just for the thermocouple but also for RTD and NTC specs

[Manel Gasulla]

Hi, I'd like an answer to my last comment.

[DAQman]

The USB-TEMP and USB-TEMP-AI, although they share a similar name, are different devices and, as such, have their own set of specifications. 

[Manel Gasulla]

Sorry, this is not a convincing answer 🙁