To ensure the accuracy of hygrothermographs, regular calibration and maintenance are required. Develop a calibration plan and determine the calibration cycle according to the usage frequency and accuracy requirements of the hygrothermograph. In daily use, pay attention to protecting the hygrothermograph and avoid collisions and damages. Clean the temperature-sensing part and humidity sensor of the hygrothermograph regularly to prevent dust and dirt from affecting the measurement accuracy.
For example, in a warehouse of a pharmaceutical factory, staff perform calibration on the hygrothermograph once a month. They will first check whether the appearance of the hygrothermograph is damaged, and then use standard equipment for calibration. If abnormal readings of the hygrothermograph are found, calibration or repair should be carried out in time. At the same time, keep calibration records well for tracing the calibration history of the hygrothermograph.