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Armoured thermocouple principle and structure2

2021-01-11

JVTIA

269

Instrumentation armoured thermocouple type is complete, has the advantages of simple operation, good quality and stable performance. Users use armoured thermocouple products for use in the process of knowledge is the need to master, the project is mainly to introduce armoured thermocouple working principle and structure, hope can help users better application products.

armoured thermocouple principle

are two kinds of different ingredients of conductor on both ends of the welding, forming circuit, direct measurement WenDuan call work side, the terminal end is called the cold end, also known as the reference. When work end and reference end there is temperature difference, will produce thermal current in the circuit, connected to display instrument, the instrument will indicate the thermocouple thermoelectric emf generated by the corresponding temperature value. Armoured thermocouple thermoelectric emf will grows with the temperature measuring end, only the size of the thermoelectric emfs and thermocouple temperature difference on both ends of the conductor material and, had nothing to do with hot electrode length and diameter. Structure of armored thermocouple is, is made up of a conductor, high insulation magnesium oxide, coat 1 cr18ni9ti stainless steel protecting tube, after many integrated control. Armoured thermocouple products are mainly composed of terminal block, terminal and armoured thermocouple basic structure, and with various mounting device.

armoured thermocouple structure

armoured thermocouple is mainly composed of terminal block, terminal and armoured thermocouple elements such as basic structure, and with various mounting device. Installing a fixed type of fixture is for users to install use. Armoured thermocouple are: no fixed device, clamp sleeve type, movable card sleeve, a fixed flange, movable flange five kinds of structure. Fixed card only for the use of disposable fixed set of type, can do many times of cutting sleeve type has the fixed to use.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor

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