[SOLVED] PT1000 and Callendar-Van Dusen Equation question

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1

Hello,

i want to calculate temperature from resistance of PT1000 with Callendar-Van Dusen equation. I am using equation for temperature which i found here -> Measuring temperature: Platinum Resistance thermometers

I tried to calculate temperature from it. I took R=1093,5 ohms because from PT1000 table it fits to 24 °C. I calculated it three times but i always get 2,393247. If i multiply this with 10 it's about 24, what would be correct but that's not what equation says.

I am wondering what i am doing wrong.. Did i miss any part of equation or?

equation.PNG

2

Hi here is a table to check your results with.

http://www.solarhotusa.com/products/controls/files/Resistor-table-Pt1000.pdf

I used the equation in a spread sheet and it works fine.
Do your calculations step by step.

Tom........ :slight_smile:

3

TomGeorge:
I used the equation in a spread sheet and it works fine.

You're right, it works. I made mistake while inserting A and B coefficients :slight_smile: