Issue
Accuracy on TAC type sensors
Environment
Vista family sensors
TAC 1.8kOhm temperature sensor
Cause
In some applications, a high accuracy is requested.
Resolution
All temperature sensors designed for work with the TAC Vista platform is using a 1.8kOhm sensor thermistor (1.8kOhm@25°C), specifically designed to TAC specifications. Since we are using the sensors for HVAC applications, and not industrial purposes, the accuracy is +/- 0.35°C between 15 and 30°C. It's then less accurate in temperatures below and higher than this span.
I have used STR100 as an example in this case.