Bimetallic thermometer is in use process need what to problem note

Bimetallic thermometer is a kind of measurement in the field of low temperature test instrument. Bimetallic thermometer can be directly measured in the process of various production - 80 ℃ ~ + 500 ℃ within the scope of liquid, steam and gas medium temperature. Bimetallic thermometer is applied in chemical and petrochemical industry; Power engineering; Field of food. Construction machinery and general factory. Bimetallic thermometer is in use process need what to problem note? Instrument answer: when choosing bimetallic temperature time, we must give full consideration to the practical application environment and requirements, such as the dial diameter, precision grade, fixed installation way, risk categories and measured medium environment, etc. In addition, also attaches great importance to the performance and maintenance workload and other factors. In addition, the bimetallic thermometer in use process should pay attention to the following: A, bimetallic thermometer protecting tube immersed in the measured medium length must be greater than the length of the thermal components, immersed in length is more than 100 mm, 0 50 ℃ range into greater than 150 mm in length, so as to ensure the accuracy of measurement. B, all kinds of bimetallic thermometer should not be used to measure open containers within the medium temperature, electric contact thermometer should not be at work used in the control circuit of larger vibration occasions. C, bimetallic thermometer in custody, use the installation and transportation, should avoid collision protection tube, do not make the protection tube bending variant and the table when the spanner is used. D, thermometer in the case of normal use shall be regular inspection. Is every six months. Electric contact thermometer is not allowed to work under strong shock, so as not to affect the reliability of the contact. E, the temperature of the instrument often work as far as possible in the scale range of 1/3 to 2/3.