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@GSAS - Karthick Depending on your geographic region, your application, and whether the non-battery powered DAQs mentioned by @Fausto require a computer, you could consider a portable power solution, such as the following. https://www.anker.com/products/a1760?ref=pps_productBanner7_3&variant=42025975873686 A more economical solution might be the following ... You could consider the thermocouple hat for the rpi. (MCC could answer questions whether this is actually appropriate for your application.) https://digilent.com/shop/mcc-daq/data-loggers/mcc-daq-hats-for-raspberry-pi/ It is possible to add battery power to the raspberry pi so this is a possible route to meet your needs. Just some quick thoughts on possibilities to explore. You'll want to coordinate with MCC to make sure anything you come up with actually work before making an investment.

Thanks for the prompt and thorough response

Hello. I have an MCC128 hat, and it works well to sample data @ 1kHz from an analog sensor connected to the data acquisition board via a differential analog input. A continuous scan over many hours (5+ hours) works flawlessly for my application. To characterize the sensor noise properties, I typically acquire data over several hours and apply statistical techniques. As I am interested in the noise properties, I also configure the MCC128 to +/-1V to maximize the available resolution. I suspect the reason why my calculations do not match the sensor's datasheet for certain timescales is due to the 16-bit A/D converter. Looking for options to test out this hypothesis. There are several other MCC hats for the rpi with 24-bit A/D converters, but those seem tailored to specific sensors and/or do not support the 1kHz sample rates of interest. Is there a drop-in, pin-compatible 24-bit A/D converter that can be installed in the MCC 128? Are there firmware options to change the voltage range to something tighter than +/-1V or is that a limitation of hardware on the hat? Any other thoughts?