May 06, 2023 Leave a message

The Impact Of The Environment On Sensors Mainly Includes The Following Aspects

The high-temperature environment causes problems such as melting of coating materials, melting of solder joints, and structural changes in the stress inside the elastic body of the sensor. For sensors working in high-temperature environments, high-temperature resistant sensors are often used; In addition, insulation, water cooling, or air cooling devices must be added.
The impact of dust and humidity on short circuits in sensors. Sensors with high airtightness should be selected under these environmental conditions. The sealing method of different sensors varies, and there are significant differences in their sealing performance. Common seals include sealant filling or coating; Mechanical fastening and sealing of rubber pads; Welding (argon arc welding, plasma beam welding) and vacuum nitrogen filling sealing. From the perspective of sealing effect, welding sealing is the best, and filling and coating with sealant is the worst. For sensors operating in clean and dry indoor environments, adhesive sealed sensors can be selected, while for sensors operating in humid and dusty environments, sensors with membrane hot sleeve sealing or membrane welding sealing, vacuum pumping and nitrogen filling should be selected.
In highly corrosive environments, such as moisture or acidity, which can cause damage to the elastic body of the sensor or cause short circuits, sensors with good corrosion resistance and good airtightness should be selected with an outer surface sprayed with plastic or stainless steel cover.
The impact of electromagnetic fields on the output of disordered signals from sensors. In this case, the shielding of the sensor should be strictly checked to see if it has good electromagnetic resistance.
Flammability and explosiveness not only cause complete damage to sensors, but also pose a significant threat to other equipment and personal safety. Therefore, sensors operating in flammable and explosive environments have higher requirements for explosion-proof performance: explosion-proof sensors must be selected in flammable and explosive environments. The sealing cover of such sensors not only needs to consider their airtightness, but also the explosion-proof strength, as well as the waterproof, moisture-proof, and explosion-proof properties of cable leads.

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