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Bloviating on Temperature Sensors

Posted by rq3 
Bloviating on Temperature Sensors
December 19, 2022 07:38PM
Well over a year ago I designed, fabbed, and installed a linearized amplifier based on the TI OPA388 operational amplifier for a PT1000 RTD.
Attached is the reason why, which includes links to Texas Instruments' excellent design spreadsheet, and simulation software. The zipped Gerber files for the board are also attached,
as is a discussion of the amplifier component values.

I often get calls and e-mails from folks confused by the difference between thermistors, thermocouples, and RTD's, and why temperature measurements "bounce" or "suck".

This may help.

Edited 2 time(s). Last edit at 12/19/2022 08:01PM by rq3.
open | download - OPT1000_RTD_ AMPLIFIER.docx (70.4 KB)
open | download - OPT1000_Gerbers.zip (97.5 KB)
open | download - OPT1000.docx (21.2 KB)
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