Automotive pressure sensor sealing method revealed!3 methods, with 1 solution
The purpose of the sealing pressure sensor is to protect the sensor inside from factors such as dust, moisture and vibration to ensure the normal operation of the sensor. The following will introduce three methods of sealing the pressure sensor for your reference.
Method 1: modified rubber sealing method ENIENT EG0528AB
This is a new type of sealing technology that requires high strength and reliability, and can adapt to a more severe and complex environment. First, modified rubber glue is needed to inject the interior of the sensor to fill the cavity of the sensor and make its interior tightly closed. This method is simple and low cost, and is generally applied for most automotive pressure sensors.
Method 2: silica gel filling and sealing method
Silicone gel sealing method is a relatively stable sealing method. Silicone gel sealing method has higher temperature resistance and softer colloid, lower stress, can protect the sensitive parts inside. First, the silicone needs to be injected into the sensor shell, and then the sensor is stored in the silicone container, so that the sensor is completely wrapped by the silicone. Natural placement allows the silicone to solidify, forming a protective layer. This method is suitable for the weight is light, not pulled by external force.
Method 3: Epoxy irrigation and sealing method
Epoxy sealing method is a more robust method of sealing pressure sensor. Epoxy resin has a very high rigidity and corrosion resistance. When using epoxy sealing method, the outside of the sensor should be cleaned to make the surface smooth and dirt. Then, the epoxy resin was mixed with the curing agent in proportion, and the mixture was poured into the inside of the sensor to fill the entire cavity. Finally, cure it naturally or heat the sensor to cure it completely. This method is suitable for the protection of the pressure sensor under special working conditions, which needs to withstand a large impact, corrosion resistance, etc.
Choosing the appropriate sealing method can protect the car pressure sensor, prolong its service life, and ensure the stability and safety of the car.