Calibration | In the course of the service life (e.g. of a thermocouple), chemical and mechanical influences as well as ageing result in changes to the characteristic curve compared to the delivery state. The magnitude of the change depends heavily on the type of load. The temperature sensor must be calibrated at regular intervals in order to be able to take drift into account and compensate for it. This calibration is used to check the displayed temperature values and, if necessary, to document the values by which they deviate from the actual measured temperature. The values are recalibrated during adjustment. Components in electrical measuring devices are also subject to ageing and environmental influences such as temperature fluctuations. To ensure that the measuring systems work correctly, most manufacturers recommend an annual calibration, e.g. to detect small creeping deviations.
