What is Sensor sealing
Sensor sealing refers to the sealing measures used to protect the internal components of the sensor from the external environment and prevent liquid, gas, dust, and impurities from entering the inside of the sensor. The purpose of sensor sealing is to ensure the normal operation of the sensor and its ability to accurately sense environmental parameters.
Product parameters
Material： FKM 90
|
Property
|
Unit
|
Test method
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Test parameter
|
Value
|
|
Hardness
|
Shore A
|
ASTM D 2240 |
90
|
|
|
Specific Gravity
|
g/cm3
|
ASTM D 1817
|
1.73 |
|
|
Tensile Strength
|
MPa
|
ASTM D 412 |
11
|
|
|
Ultimate Elongation
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%
|
ASTM D 412 | 116 | |
|
Compression Set
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%
|
ASTM D 395 B/1
|
24h / 200 °C
|
33
|
|
Low temp. resistance
|
°C
|
ASTM D 1329
|
TR10
|
-47
|
|
Bending Test
|
internal
|
4h / -55°C
|
pass
|
Sensor Sealing Details
- Sealing material: Sensor sealing usually uses rubber, silicone, fluoro rubber, or other chemical-resistant sealing materials. These materials have good elasticity and wear resistance, and can effectively prevent the penetration of liquids and gases.
- Sealing structure: Different structural forms can be adopted, such as O-ring seal, lip seal, thread seal, etc. The specific sealing structure is determined based on the design and application requirements of the sensor and is designed to provide reliable sealing performance.
- Protection level: The protection level is frequently determined according to international standards (such as IP level). The IP rating indicates the sensor's protection against solid particles and liquids. For example, IP67 means that the sensor is completely dustproof and waterproof, and can operate underwater to a certain depth.
- Installation and Maintenance: When installing the sensor, correct installation and adjustment of the seal are key to ensuring sealing performance. Additionally, regular inspection and maintenance of the integrity of the sensor seal is an important step in maintaining its functionality.
What are the international certifications for sensor seals?
International certification mainly involves protection level (Ingress Protection, IP level for short) standards.
IP rating is a widely used international standard for evaluating and classifying sensors, electrical equipment, and the sealing level of their enclosures. It indicates the device's ability to protect against solid particles and liquids. The following are several common IP-level certifications:
IP67: This rating indicates that the sensor is completely dust and water-resistant. For solid objects (such as dust), it has protective capabilities to prevent the entry of objects. For liquids, it is able to work underwater to a certain depth and keep the internal components safe.
IP68: This rating indicates that the sensor is more resistant to dust and water, and is more stringent than IP67.
These IP rating certifications are evaluated and certified based on the IEC 60529 standard issued by the International Electromechanical Commission (IEC).
When selecting a sensor, in addition to IP level certification, other factors should also be considered, such as the sensor's measurement accuracy, response time, operating temperature range, etc., to meet specific application needs.
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