Pt100 - resistance thermometers

-Generator for an individual temperature table from a Pt100 resistor-

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About the site

This is a private information page about electrical temperature measurement with resistance thermometers (e.g. Pt100, Pt500, Pt1000). My experiences of many years in the field of measurement and control technology are recorded. I do not take over any liability for incorrect information and would be pleased about further suggestions and requests for additions.
Please also visit my information page about variable area flowmeters: https://schwebekörper.de/en

Harald Peters

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Temperature tables calculator from Pt100/Pt1000 resistance values

Create your individual temperature table for Pt100/Pt1000 resistance thermometers by entering the measured
  • Start and end resistance
    - Pt100: 18,52 Ohm to 390,48 Ohm
    - Pt1000: 185,2 Ohm to 3904,8 Ohm
  • Desired table subdivision
    - Pt100: 0,1 / 0,2 / 0,5 / 1 / 5 / 10 Ohm
    - Pt1000: 1 / 2 / 5 / 10 / 50 / 100 Ohm
  • Desired temperature sensor (Pt100, Pt1000)

Enter your values




from: Ohm Ohm





Calculation formulas for temperature from a Pt100 resistor

The resistance of platinum sensors (Pt100/Pt1000) is calculated in accordance with DIN EN 60751.
After converting these formulas, you get the following 2 formulas for calculating a temperature
from a measured resistance of a platinum temperature sensor (Pt100/Pt1000).
  • Resistance range: 18,52 to <100 Ohm (-200 to <0°C):
    After converting the DIN EN 60751 formula
    RT = R0 * (1 + A * T + B * T2 + C * (t-100) * T3) ,
    the temperature is calculated using a numerical approximation method (Newton-Raphson algorithm).
    The details of the calculation method will not be discussed here.

  • Resistance range: 100 to 390,48 Ohm (0 to 850°C):
    Formel-OhminT.png
RT= Resistance at desired temperature
R0= Nominal resistance Pt100 at 0°C = 100 Ohm
T= Temperature °C
A= 3,9083 * 10-3
B= -5,775 * 10-7
C= -4,183 * 10-12


Contact

Harald Peters
Schöne Aussicht 17
36199 Rotenburg
Germany
info@pt100.de

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