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Manufacturing method of temperature sensor

A technology for temperature sensors and manufacturing methods, applied to parts of thermometers, thermometers, instruments, etc., capable of solving problems such as poor sealing and waterproof performance of temperature sensors

Inactive Publication Date: 2008-03-05
常州市科文传感器材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned problem of poor sealing and waterproof performance of the temperature sensor under the impact of high and low temperature, and can be used in an anti-corrosive environment (such as seawater), the invention provides a method for manufacturing a temperature sensor

Method used

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  • Manufacturing method of temperature sensor

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Embodiment Construction

[0014] A method for manufacturing a temperature sensor. After the thermistor 1 is connected to the wire 2 by welding or welding, the same material as the wire insulation layer 3 is used as the coating layer 4 of the thermistor 1. The material can be PVC, PE, TPE or Teflon, heated and pressurized, the heating temperature is within the range of ±20°C of the melting point of the material, and the pressure range is 2-5MP, and the coating layer 4 and the wire insulation layer 3 are mutually fused into one structure. Ensure that the thickness of the cladding layer is ≥0.2mm, and at the same time make the thickness ≥0.5mm as much as possible, so as to ensure that the cladding layer can effectively protect the thermistor inside the cladding.

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Abstract

The method comprises: after connecting the thermistor to the wire by using soldering or welding, using a material which is identical with the wire insulation layer as the covering layer of the thermistor; heating and pressing it in order to make the covering layer combine with the isolation layer.

Description

technical field [0001] The invention relates to a manufacturing method of a temperature sensor. Background technique [0002] At present, there are no more than two manufacturing methods for temperature sensors. One is to weld the thermistor on the wire and then cover the thermistor and wire with epoxy resin to seal it to improve reliability (see Figure 1) . The other is to add a metal or plastic sleeve on the basis of the previous one, and then fill it with epoxy (see Figure 2) to further improve the product's ability to resist moisture and corrosion. Since the above two products are sealed with epoxy, wires and thermistors, due to the expansion coefficient and adhesion, the waterproof performance of the products will drop sharply with the change of high and low temperature during use, and the service life will be short. The domestic standard is 100 times of high and low temperature impact, while that of foreign companies is 1000 times, and the service life is even worse ...

Claims

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Application Information

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IPC IPC(8): G01K7/22G01K1/08G01K1/10B29C45/14B29C43/18B29C35/02
Inventor 倪伟文
Owner 常州市科文传感器材料有限公司
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