What is a Pt1000 Sensor?
One of the most prevalent types of platinum resistance thermometer is the Pt1000 sensor.
The term “Pt” refers to the fact that the sensor is constructed of platinum (Pt). The number 1000 denotes the sensor’s resistance of 1000 ohms (at 0°C). In two-wire applications, the PT1000 at Process Paramaters are preferred over Pt100 sensors because Pt1000s have lower lead resistance.
In this post, we’ll explore how a Pt1000 sensor works and take a look at its main applications.
More Details about Temperature Sensor Pt1000
Pt1000 is a resistance temperature sensor like the Pt100 but is made with a platinum component with a resistance of 1000 ohms. It has a 385-ohm fundamental interval which is basically a change in resistance over 0 to 100ºC.
Since Pt1000 has a higher resistance than the Pt100 sensors, it is suited for 2-wire applications as lead resistances are no longer a problem due to high initial resistance of the element. Pt1000 is used in various temperature measurement applications.
The Pt1000 sensor element is fitted inside a probe or metal sheath. This protects it against damages by the surrounding environment during insertion in the process for measuring. The other end is finished by two insulated wire tails connected to the temperature taking equipment.
What makes the Pt1000 different from Pt100?
There are several differences between the two RTD sensors. The very first is the resistance value at 0°C which is 1000Ω for Pt1000 and 100Ω for Pt100.
Also, the base resistance for the Pt1000 is ten times that of Pt100. The fundamental interval as well. In simple terms, the resistance change every degree centigrade for Pt1000 is ten times the one for Pt.
However, the accuracy of the Pt1000 is no worse than that of Pt100. It’s important to note that a class B Pt1000 has …

