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CN

Temperature measurement conditions of industrial thermocouples

2019-09-17

It is a kind of temperature sensing element and a primary instrument. The thermocouple measures the temperature directly. The closed circuit is composed of two kinds of conductors with different components. Due to different materials, different electron densities generate electron diffusion, and the potential is generated after stable equilibrium. When there is gradient temperature at both ends, current will be generated in the circuit, generating thermoelectric EMF. The greater the temperature difference, the greater the current will be. The temperature value can be known after the thermoelectric EMF is measured. In practice, thermocouple is a kind of energy converter, which converts heat energy into electric energy.

Technical advantages of thermocouples: wide temperature measurement range and stable performance; high measurement accuracy, direct contact between the thermocouple and the measured object, not affected by the intermediate medium; fast thermal response time, flexible response of the thermocouple to temperature changes; large measurement range, continuous temperature measurement of the thermocouple from - 40 ~ + 1600 ℃; reliable performance and good mechanical strength of the thermocouple. Long service life, convenient installation.

The electric couple must be composed of two kinds of conductor (or semiconductor) data with different properties but meeting certain requirements. There must be a temperature difference between the measuring end and the reference end of the thermocouple.

Two kinds of conductors or semiconductors A and B with different materials are welded together to form a closed circuit. When there is a temperature difference between two rigid points 1 and 2 of conductors A and B, electromotive force will be generated between them, so a large current will be formed in the circuit, which is called thermoelectric effect. Thermocouples work with this effect.

Foshan Shanming automatic control equipment Co., Ltd. is a professional combustion control equipment company integrating the design, equipment selection, installation and commissioning of combustion control system of various industrial kilns. Since its establishment in 1996, the company has strived to promote the combustion control equipment of domestic and foreign well-known brands with low price, high quality, low energy consumption and easy operation, and won the high-speed development and the unanimous praise of users with the independent innovation brand "twaan tu'an". Our company is the general agent of Honeywell combustion control equipment products in South China. The products include all kinds of gas burner spray guns, electric actuators, integrated ignition controllers, air-fuel proportional valves, gas solenoid valves, electric adjustment triggers, temperature control instruments, gas pressure stabilizing valves, thermocouples, etc. Products are widely used in ceramics, building materials, chemical industry, metallurgy and other industries, welcome to buy.

For details, please see

Shanming combustion control equipment website: www.xawald.com

Alibaba xinchengtong: fssmzk.cn.alibaba.com

Tel: 0757-88727780 Fax: 0757-82703569

E-MAIL:sm@shanming.cn QQ: 2880265965

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