95 Al2O3 Alumina Ceramic Body for Capacitive Pressure Sensor

• Application: Aerospace, Electronics, Medical, Chemical, Automotive, Industrial Process Control
• Purity: 95% or as Required
• Type: Ceramic Part
• Shape: Standard / Customized
• Forming Process: Dry Pressing
• Product Type: Sensor Ceramics
• Suitable for: Piezoresistive / Capacitive Pressure Sensors
• Product Features: Good Density, High Precision, Good Stability
• Transport Package: Cartons with EPE Foam
• Specification: As required
• Trademark: Jinghui
• Origin: China
• HS Code: 8547100000
• Production Capacity: 500000 Pieces/Month

Product Description

95 Al2O3 Alumina Ceramic Body for Capacitive Pressure Sensor
 

Product Introduction

Pressure sensor is a device that can sense the existence of pressure and convert the sensed pressure into electrical signals or other required signal outputs according to certain rules. Pressure sensors are of various types, such as strain gauge, piezoresistive, capacitive, piezoelectric, resonant, inductive, etc.

Jinghui Ceramic mainly supplies ceramic bases required for piezoresistive pressure sensors and capacitive pressure sensors. The raw materials used are mainly alumina ceramics.
 

- The excellent chemical resistance and heat resistance of ceramic materials make ceramic sensors an ideal choice for harsh environments.

- Thick film conductors and resistor circuits can be directly printed without additional insulation processes.

- It can be customized according to customer requirements with high dimensional accuracy.

 

Product Applications

Ceramic Piezoresistive Pressure Sensor

Ceramic resistor technology uses thick film printing technology to print the Wheatstone bridge on the surface of the ceramic structure, and uses the piezoresistive effect to convert the pressure signal of the medium into a voltage signal.

Ceramic resistor technology has the advantages of moderate cost, simple process, high accuracy, good stability, small size, compactness, easy packaging, and wide application range. However, the signal output sensitivity of this technology is limited, and the range is generally limited to 500kPa~10MPa. In addition, the conventional hollow structure only relies on the diaphragm to bear pressure, and the overload resistance is limited.

Ceramic piezoresistive pressure sensors are usually used in hydraulic and pneumatic devices, process control, environmental control, servo valves and drives, etc.

 

Ceramic Capacitive Pressure Sensor

Ceramic capacitor technology uses a fixed ceramic base and a movable ceramic diaphragm structure. The movable diaphragm is sealed and fixed to the base by means of glass slurry or other methods. The electrode pattern is printed on the inner side between the two to form a variable capacitor. When the medium pressure on the diaphragm changes, the capacitance between the two changes accordingly. The signal is converted and conditioned by the conditioning chip and then output to the next stage for use.

Ceramic capacitor technology has the advantages of moderate cost, wide range, good temperature characteristics, consistency, and good long-term stability. Ceramic capacitive pressure sensors are widely used in automotive and industrial process control and other fields.

Conventional silicon resistors and ceramic resistors are difficult to ensure measurement accuracy and long-term reliability in high temperature and corrosion test environments due to their own structure and material characteristics. Ceramic capacitive pressure sensors just overcome the disadvantages of both and can ensure measurement accuracy and long-term reliability in high temperature and corrosion environments.

 

Company Profile

Jinghui Ceramic specializes in the production of sensor ceramics. The products have good density, stable dimensions, high precision, high elastic modulus, high compressive strength, corrosion resistance, wear resistance, impact resistance, good stability and other performance characteristics.
 

 

 

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