Make the thermostat believe you.

HVAC technician holding ohmSTAR, clipped to a building controller input, reading 72.00 °F and 11,326.86 ohms

Building controllers read thermistors and RTDs. ohmSTAR stands in for the sensor, so you can check setpoints, alarms, and sequences without heating or freezing anything. Load the sensor curve, then dial the temperature.

All 128 sensor curves in the Table Library are built in. For any other sensor, load a custom table.

Test points: 10k NTC

β 3950 K, R25 = 10 kΩ
°C	Ω
−10	58,245.71
0	33,620.60
4	27,287.54
10	20,174.58
25	10,000.00
40	5,301.47

Test points: Pt1000

IEC 60751, R0 = 1000 Ω
°C	Ω
−10	960.86
0	1,000.00
20	1,077.93
50	1,193.97

Values are calculated from the standard curve. They aren't an accuracy spec.

Open Sensor Explorer Table Library