Also, see our PT100 Calculator.
Use this PT100 Table Generator to generate a custom PT100, PT500, or PT1000 resistance table in Celsius, Fahrenheit, or Kelvin, by PT-385 or PT-392 thermometer type in any increment that you can download as a CSV and print.
Instructions
Select the required temperature units, thermometer type, and nominal resistance at 0 °C (R0) value.
PT-385 and PT-392 identify the class of the instrument. PT-392 has higher purity platinum wire and is specified with a higher level of accuracy.
You can enter a custom R0 value but understand that calculated values will be unique for the thermometer and will not be of standard table value.
Select the required temperature range and table increment size. Allowed table increment is 0.1 to 10 degrees.
The table is generated into a downloadable text file that lists temperature, resistance and dR/dT at each temperature over the chosen range.
Resistance results are given in ohms. Thermometer sensitivity (dR/dT) is given in ohms-per-degree (for example Ω/°C).
The calculator uses the following equation and coefficients.
RTD / PT100 Equation
R = R0 [1 + A t + B t2 + C (t – 100) t3]
PT-392
| -40 °C to 0 °C | |
| R0 | 100.0000 |
| A | 3.9827E-3 |
| B | -5.875E-7 |
| C | -4.171E-12 |
| 0 °C to 540 °C | |
| R0 | 100.0000 |
| A | 3.9827E-3 |
| B | -5.875E-7 |
| C | 0 |
PT-385
| -200 °C to 0 °C | |
| R0 | 100.0000 |
| A | 3.9083E-3 |
| B | -5.775E-7 |
| C | -4.183E-12 |
| 0 °C to 650 °C | |
| R0 | 100.0000 |
| A | 3.9083E-3 |
| B | -5.775E-7 |
| C | 0 |
R0 = Nominal thermometer resistance at 0 °C
A, B, C = equation coefficients obtained from the standards listed below.
Calculated values and the PT-100 equation are from the following standards: IEC 60751:2008, ASTM E1137-08(2020), and JIS C 1604:1997.
Learn how to calibrate PT100s in house
Let Fluke show you how to calibrate your PT100s, RTDs, thermocouples, and temperature transmitters in-house.
1. Improve quality. Know how your important instrumentation is doing and control your processes more efficiently.
2. Reduce turn times and risk of equipment damage. No more shipping probes out of house for service.
3. Save money. Save on re-calibration costs.
4. Automate calibration. Track equipment efficiently with software.
For more information, read the article, How to calibrate PT100s in-house
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