Answer
Jan 06, 2026 - 06:41 PM
The TC-SA is a thermocouple. Thermocouples produce a voltage output which can be correlated to temperature. Their resistance change can not be correlated to temperature.(We have a primer on thermocouples in our blog section which you can see at this url:
https://www.iothrifty.com/blogs/news/...
The easiest way to read temperature from a thermocouple is to use a meter designed for thermocouples. IOthrifty offers these meters but since the output of thermocouples is standardized our thermocouples are compatible with other suppliers meters.
You can measure the output of a thermocouple with a sensitive voltmeter but since the output is a very small non-linear voltage that requires a correction for room temperature this method is challenging. We have a blog, How to Convert Thermocouple Voltage to Temperature, which will be helpful if you want to try to measure thermocouple temperature with a voltmeter.
RTDs are temperature sensors that change resistance with temperature. You can see a surface RTD here:
https://www.iothrifty.com/collections...
This a 100Ohm platinum RTD which follows a standardized temperature/resistance curve. You can find the temperature/ resistance tables with a Internet search.
https://www.iothrifty.com/blogs/news/...
The easiest way to read temperature from a thermocouple is to use a meter designed for thermocouples. IOthrifty offers these meters but since the output of thermocouples is standardized our thermocouples are compatible with other suppliers meters.
You can measure the output of a thermocouple with a sensitive voltmeter but since the output is a very small non-linear voltage that requires a correction for room temperature this method is challenging. We have a blog, How to Convert Thermocouple Voltage to Temperature, which will be helpful if you want to try to measure thermocouple temperature with a voltmeter.
RTDs are temperature sensors that change resistance with temperature. You can see a surface RTD here:
https://www.iothrifty.com/collections...
This a 100Ohm platinum RTD which follows a standardized temperature/resistance curve. You can find the temperature/ resistance tables with a Internet search.
