The calibration of the temperature sensor is the same as the calibration of most other sensors. The most common method is to place the sensor in an accurately measurable, known temperature environment for a period of time and then record whether the sensor output is at a known ambient temperature. Consistent and calculate the error of the sensor. Then let’s take a look at the calibration method of the temperature transmitter.
Since the temperature is always a slowly changing physical quantity in the natural environment, the verification of the temperature sensor is generally static, which can meet the actual needs of most temperature sensors. There are very few dynamic tests, and there are very few devices that can detect temperature dynamics.
Since the methods and principles of static temperature sensor verification are extremely simple, such data or standards are rare. Dynamic calibration of temperature sensors is generally done by laser. The best way to improve the dynamic characteristics of the temperature sensor is to use a reaction-sensitive temperature sensing material and reduce the mass of the sensor’s temperature sensing part to reduce its thermal inertia.
The calibration process of the temperature sensor is actually determining the parameters of the temperature sensor, especially the accuracy problem. Therefore, the accuracy of the measuring device used in this process is usually one order of magnitude higher than the accuracy of the sensor to be calibrated, so that the performance of the temperature sensor is determined by calibration. It is reliable and the accuracy determined is credible.