When calibrating temperature sensors, a reference sensor and a DUT must be mechanically the same. The reference sensor is a dry-block containing a liquid at a known temperature. The DUT has different thermodynamic properties. The source of heat should also be the same, and the calibration procedure should take a sufficient amount of time to determine a stable temperature. The temperature may vary from one reference to the next. The type of sensor and its temperature measurement must match.
How to Know The Importance of Temperature Calibration
The reference temperature used for a calibration must match a standard that is known to be stable. A portable thermometer can be used to determine the accurate reading. The reference temperature is the same as the actual measurement value. A separate unit can be used to calibrate the reading. This makes it more practical to perform the calibration process. It also allows the user to control the thermal boundary conditions of the system. If there are no available standards, an in-line field indicator may be a practical solution.
Performing temperature calibration is essential to the success of the whole process. It is essential to perform this step with the proper equipment. It is necessary to have a temperature reference of the same range as the measurement points of the measurement instrument. Whether the calibration is for a probe or a transmitter, it should be a stable source of temperature. The test should be done using the same probe or a new one. If the result is too different, the calibration procedure should be repeated.