The PT100 is one of the most widely used temperature sensors in the world. Did you know that 70% of all industrial temperature measurements are carried out with a PT100?
A PT100 sensor has many advantages over other temperature sensors. For example, a PT100 has a large measuring range, the element lasts a long time and it exhibits an almost linear behavior. The accuracy and easy connection are also plus points.
We have to warn you about many cheap PT100 sensors, often from Asian countries. CasCade buys PT100 sensors in bulk from two German companies. This not only gives you a competitive price, but also German quality and reliability. At CasCade we attach great importance to reliable measuring equipment. For example, we import various Japanese measuring and control equipment, including controllers and recorders. Since the PT100 pickups often come in combination with these instruments, we want the best of the best here too.
A PT100 element is a resistance element, made of platinum, with a value of 100 Ohm at 0 degrees Celsius. PT stands for platinum. The resistance wire is made of platinum. Platinum has the largest measuring range from -200 degrees Celsius to 850 degrees Celsius. After PT is 100 and that number refers to the resistance value of 100 Ohm at 0 degrees Celsius.
Is a PT100 a thermocouple?
No, they are both temperature sensors, but they have a different principle. The PT100 is a resistance of 100 Ohm at 0 degrees, the resistance of which changes with a temperature change. A thermocouple is an active element. A voltage difference arises and that is measured.
Are there different types of PT100s?
Yes, the insert length and diameter often differ. Some companies want a PT100 with a larger or smaller insertion length. There are no standards. In addition, the process connections and the connection heads (eg MA connection head or Din-B connection head) differ. And how is the PT100 connected? With a fixed cable or a direct plug? You understand that there are therefore hundreds of different options.
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