I'm doing cooling for a DSLR camera. The cooling is based on the peltier element. It is necessary to obtain information about the sensor temperature with high accuracy and adjust the power on the peltier element to obtain the set temperature. From the information that I found on the Internet, it is …

it is not so easy to find a device that will allow to read temperature information with an accuracy of 0.1 C TMP119

[image] gilshultz: Please define this as a percentage and a range. ±0.1C -20C...+60C

[image] quarklabs: ±0.1C -20C...+60C http://ww1.reesscientific.com/brochures/Catalog/Pdfs/2_sensors.pdf You may be forced to use a small mass RTD sensor. RTDs are generally more accurate than thermocouples. RTDs have typically an accuracy of 0.1°C A standard K-type thermocouple as suggest…

No matter what accuracy the sensor is able to provide it is quite a different matter to control the temperature to provide precise temperature control

[image] gilshultz: http://ww1.reesscientific.com/brochures/Catalog/Pdfs/2_sensors.pdf You may be forced to use a small mass RTD sensor. But... In this document, none of the sensors are "small", they are all too big.

[image] UKHeliBob: No matter what accuracy the sensor is able to provide it is quite a different matter to control the temperature to provide precise temperature control The accuracy of the temperature sensor directly affects the accuracy of the PID adjustment.

I agree. Having an accurate and precise temperature sensor is important but that is separate from providing accurate temperature control

[image] quarklabs: they are all too big You never defined that. FYI? some manufacturers offering "miniaturized" RTDs designed for very tight spaces, reaching diameters as small as 1/16 inch (approximately 1.5mm) or even smaller depending on the application and specific design. Since you rule…

[image] gilshultz: A Peltier element can be used as a temperature sensor by leveraging the "Seebeck effect." It could be used if it wasn't already used as a cooling element.

[image] gilshultz: Since you do not have a complete specification Are you sure? It seems like I've explained quite clearly what I need: a very compact sensor with an accuracy of +-0.1С in the range from -20 to +60C. Preferably with a refresh rate of 0.5 seconds or less.

Precise temperature control

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quarklabs February 4, 2025, 8:51pm 21

The accuracy of the temperature sensor directly affects the accuracy of the PID adjustment.

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Precise temperature control

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