Calibrate RTD and thermistor inputs.
Set a Pt100 or Pt1000 temperature on the keypad. ohmSTAR outputs the matching resistance and shows both values. Compare that with what your controller reads, then move to the next point.
- Select the sensor table.
- Enter the temperature, or turn the encoder to step through points.
- Read the device under test. Repeat.
Pressure calibration works the same way when the pressure sensor or sender is resistive: load a custom table of pressure against ohms, then dial the pressure and the box sets the matching resistance.
Video: Platinum RTD, PID temperature controller calibration
Test points: Pt100
| °C | Ω |
|---|---|
| −40 | 84.27 |
| 0 | 100.00 |
| 100 | 138.51 |
| 200 | 175.86 |
| 400 | 247.09 |
Values are calculated from the standard curve. They aren't an accuracy spec.