PT100 and temperature scale, graduation, graduation number

PT100 is a type of temperature sensor that is widely used in various industries. It is a platinum resistance thermometer that measures temperature based on the change in electrical resistance of a platinum wire as temperature changes.

The PT100 is rated for a temperature range of -200°C to 650°C, making it suitable for use in both low and high-temperature applications. The resistance of the PT100 is dependent on the temperature, and this relationship is linear, allowing for accurate temperature measurement.

To measure the temperature using a PT100 sensor, it is necessary to calibrate the device. This calibration involves comparing the resistance readings of the PT100 sensor at different temperatures to a standardized set of values. The temperatures and corresponding resistance values are typically displayed on a temperature scale, which is referred to as the graduation number.

The graduation number is an essential parameter that specifies the relationship between the PT100 sensor's resistance and the temperature. It is typically indicated on the sensor packaging or datasheet. The most common graduation types are the European DIN standard (which uses a scale of 0°C to 100°C) and the American standard ASTM E1137 (which uses a scale of -200°C to 850°C).

In summary, PT100 sensors are commonly used in various industries, including automotive, chemical processing, and HVAC. They measure temperature based on the change in electrical resistance of a platinum wire, and the calibration is determined by the temperature scale graduation number. By using these sensors, accurate and reliable temperature measurements can be obtained, leading to better product quality and improved operational efficiency.