How do bimetallic thermometer calibration?

Bimetallic thermometer is a kind of common temperature measurement instruments, in order to ensure the measurement accuracy, we should carry on the calibration on a regular basis. Today we will talk about the bimetallic thermometer for how to calibration. Bimetallic thermometer should be performed every year in value calibration, general check point of not less than two points. Such as school instrument has been showed at room temperature, room temperature can be used as a calibration point, take another point nearly the temperature of the range area. In two calibration points, if a little is unqualified, shall be sentenced to be unqualified correction table. Are the main points of the trial operation will juice of thermal bimetal temperature components with standard mercury thermometer thermal fluid under the same temperature, pay attention to control the temperature of the measured medium changes slowly and evenly. Than the bimetallic thermometer calibration at the same time, should according to the positive and reverse sequence detection twice, take the average. For special requirements of the thermometer, temperature should be calibrated to professional institutions. On a regular basis to ensure the accuracy of calibration, but after using timely clean at ordinary times also is indispensable, light with light in use process, can be in different extent, prolong its service life.