Temperature Probe PT100

Probe PT-100.jpg

The Temperature Probe PT100 is designed to measure temperature when attached to the Temperature Probe Sensor. The PT100 detector, with its sealed cable tip, is waterproof and submersible, making it also ideal for temperature measurements in liquids and humid environments.

Platinum is abbreviated as Pt, which is why the sensors are called PT. The numbers 100, 500, and 1000 indicate the ohms measured at 0°C (32°F). Therefore, you have sensors named PT100, PT500, or PT1000.


  Datasheet Temperature Probe PT100


Operating conditions 
Max temperature (cable and tip) 250 °C / 482 °F
Min temperature (cable and tip) -100 °C / -148 °F
Measuring tip / sensor tolerance class Detector: PT100 / class A (IEC 60751)
Length 2000mm
IP rating IP68
Response time 4 seconds in water

What does Class A (IEC 60751) mean?

The international standard IEC 60751 outlines the specifications and temperature-resistance relationship for industrial platinum temperature sensors. It establishes tolerance classes based on a single nominal resistance/temperature characteristic curve, defining four classes: AA, A, B, and C. Because of their high precision, classes A and B are the most commonly used.

The Temperature Probe is Tolerance Class A and its precision corresponds to the values given in the table when used together with the Temperature Probe Sensor.

Tolerance Class Wire-wound Construction Thin-film construction Tolerance (°C)
C -196 to 600°C -50 to 600°C ±(0.6 + 0.01∣𝑡∣)*
AA -50 to 250°C 0 to 150°C ±(0.1 + 0.00171∣𝑡∣)*
A -100 to 450°C -30 to 300°C ±(0.15 + 0.002∣𝑡∣)*
B -196 to 600°C -50 to 500°C ±(0.3 + 0.005∣𝑡∣)*

*The absolute value of the temperature in Celsius, ∣𝑡∣, is used without considering the sign.