Pt100 RTD Sensor, -200℃-420 ℃

A Pt100 RTD (Resistance Temperature Detector) sensor is a temperature sensing device that uses a platinum resistor to measure temperature. The "Pt" stands for platinum, and "100" refers to the resistance of the sensor at 0°C, which is 100 ohms. Pt100 sensors are widely used in industrial and scientific applications due to their high accuracy, repeatability, and stability over a wide range of temperatures. The resistance of the platinum element increases with temperature, allowing the sensor to provide an accurate temperature reading.

The working principle of a Pt100 sensor is based on the relationship between the resistance of a platinum element and temperature. As the temperature increases, the electrical resistance of platinum also increases. The Pt100 sensor has a nominal resistance of 100 ohms at 0°C, and this resistance changes predictably with temperature. The sensor is typically powered by a small constant current, and by measuring the change in resistance, the corresponding temperature can be calculated using standardized temperature-resistance curves. This allows for precise and reliable temperature measurement.

The primary difference between Pt100 and Pt1000 sensors is the nominal resistance. A Pt100 sensor has a resistance of 100 ohms at 0°C, while a Pt1000 sensor has a resistance of 1000 ohms at 0°C. This means that Pt1000 sensors are typically more sensitive to temperature changes, which can be advantageous in some applications. The higher resistance of Pt1000 also allows for easier signal transmission over longer distances with less interference. Both types of sensors operate on the same principle and are made from platinum, but Pt1000 sensors are often preferred for applications requiring higher sensitivity or where longer signal transmission is needed.