This paper, the application of the bimetallic thermometer

bimetallic thermometer is a kind of suitable for measuring the temperature field testing instrument, can bimetallic thermometer used to directly measure the liquefaction, the temperature of the gas. Bimetallic thermometer compared with domestic similar products: instrument accuracy level is 1. Level 0, instrument shell with anti-corrosion materials, its temperature resistance can be as high as 200 ℃, low - 40℃。 Flange structure, double o-ring seal, the anticorrosion, the waterproof performance is good. Protecting tube welding using automatic argon protecting tube, weld a solid, intergranular corrosion is small. Dial is aluminium oxide printing plate, the surface clear aesthetic appearance. A pointer is adjustable. Bimetallic thermometer is axial, radial and universal type header type selection, etc. Bimetallic thermometer sheath maerial length can be customized according to customer needs. It is widely used in petroleum, chemical, metallurgical, textile, food and other industries. Is a kind of measurement in the field of low temperature test instrument. Can be directly measured in the process of various production - 80℃- Liquid + 500 ℃ range steam and gas medium temperature. The scene display temperature, intuitive and convenient safe and reliable, long life; Core-pulling thermometer can not stop short time machine maintenance or replacement. The axial, radial, 135 o, universal type, such as the variety is complete, suitable for all kinds of the needs of the installation.

use and maintenance of the installation of the electrical contact bimetallic thermometer

01, explosion-proof electric contact - the bimetallic thermometer should be installed in the surrounding environment 20 ℃ to 40 ℃, relative humidity is not greater than 80%, less than 2000 m altitude, the installation site, the monthly mean temperature is not higher than + 30 ℃, due to the changes of temperature, allowed to coagulate frost on the surface of the thermometer, temperature < 200 ℃, the measured medium ( When used for steam, such as high temperature medium measurement, should choose good explosion-proof electric contact bimetallic thermometer) 。

02, meter must be installed vertically, and makes every effort to keep the same level with measuring point position, otherwise should be included in the additional error caused by the liquid level difference.

03, instrument of the electrical circuit ( With reference to the appended drawings) After reading, check them carefully and try to move on.

4 parts, instrument temperature generally use temperature limit 3/4.

05, in regulating instrument given value ( By adjusting the knobs, dispatch, defining a pointer to the given value) Should first adjust lower limit given value, and then adjust the cap of a given value.

6, open the outlet box or adjusting is required for a given value range when the power is cut off.

7, meter in normal use, shall regularly check, check at least once a year in value, the instrument (in case of sudden accident Caused by leakage, burst pressure, contact welding or because of the severe oxidation affect the reliability of the contact, pointer, loosening or distortion of instructions) Should be checked immediately.

08, instrument in use process, often should keep dry and clean.

09, explosion-proof electric contact bimetallic thermometer flame-proof performance reliable or not mainly depends on all parts that form the flame-proof shell under pressure, The shell explosive mixture when the explosion will have big pressure and the explosion-proof surface and cooperate with the quality condition) on the surface of the 。 Therefore, in the process of installation maintenance and checks, be sure to carefully avoid friction or thump, especially in the outlet box or disassembling instrument especially when carries on the comprehensive repair it should be noted that and do not allow the paint on the surface of the flame-proof ( License only coated with a thin layer of rust protection grease, such as: 204 - 1, rust-proof oil, etc. ) 。

10, when inspection instrument, if the user on the basis of explosion-proof electrical equipment knowledge concept is not clear, and the structure of flameproof instrument characteristics and requirements of don't know much, do not haphazardly or modified, otherwise it will against the isolation performance of the instrument.