Ceramic pressure sensor is a pressure sensor refined from a thick ceramic base using a refined ceramic base.

SI-338 Ceramic Pressure Sensor

SI-338 Ceramic pressure sensor uses ceramic or diffused silicon core. All stainless steel package, small and beautiful appearance. Suitable for occasions with limited installation space. Wide range temperature compensation, high accuracy, small size, no adjustment, wide range coverage. Support OEM processing. Ceramic pressure transmitter is used in compressor, air conditioning and other pressure measurement.

Sino-Inst is a manufacturer of Ceramic Pressure Sensor in China. Committed to the manufacture, sales and engineering support of Ceramic Pressure Sensos.

Features of Ceramic Pressure Sensor

  • Small volume
  • Light weight
  • Easy to install and use
  • Cost-effective and compact economy
  • 0-0.2MPa -…- 40MPa pressure range measurement
  • Multiple industry standard signal output options
  • Wiring method is connector or direct lead
  • Compact design, high cost performance
  • Various pressure interfaces can be selected

Specifications of Ceramic Pressure Sensor

Range0-0.2MPa-……-40MPa
Comprehensive accuracy0.5%FS、1.0%FS、2.0%FS
output signal4-20mA、0-5V、0.5-4.5V
Supply voltage+5VDC、+12VDC、+24VDC
Process connectionG1/4、G1/2、G1/8、M20*1.5、M14*1.5
Electrical connectionsWaterproof connector
Compensation temperature0-65 ° C (default)
Operating temperature-20-125°C
Safety overload150-200%
Extreme overload200-250%
Long-term stability1% FS / year
Response timeLess than 1ms
shell material304 stainless steel
Protection classIP67, IP65

Applications of Ceramic Pressure Sensor

  • Engine Fuel Pressure measurement
  • Refrigeration and Air Compressor
  • Hydraulic pressure controller
  • Petrochemical industry
  • HAVC System Application
  • Pressure meter
  • Laboratory equipment
  • Water pressure measurement
  • Saving water to irrigate
  • Liquid and Gas pressure measurement

Extended reading: Industrial Pressure Transmitters|Buy from the manufacturer

Ceramic pressure sensor working principle

The corrosion-resistant ceramic pressure transmitter has no liquid transfer. Pressure acts directly on the front surface of the ceramic diaphragm. Make the membrane slightly deformed. Thick film resistors are printed on the back of the ceramic diaphragm and connected to form a closed Wheatstone bridge.

Due to the piezoresistive effect of the varistor, the bridge generates a voltage signal that is highly linear and proportional to the pressure and proportional to the excitation voltage. The standard signal is calibrated to 2.0 / 3.0 / 3.3 mV / V according to the different pressure ranges, which is compatible with strain gauge transmitters.

Through laser calibration, the transmitter has high temperature stability and time stability. The transmitter comes with temperature compensation of 0 ~ 70 ℃, and can directly contact most media.

Ceramic is a recognized material with high elasticity, corrosion resistance, wear resistance, shock resistance and vibration. The thermal stability of ceramics and its thick film resistance can make its operating temperature range as high as -40 to 135 ° C, and it has high accuracy and stability for measurement. The degree of electrical insulation is> 2kV, the output signal is strong, and the long-term stability is good.

Extended reading: Static pressure vs dynamic pressure vs total pressure

Ceramic Diaphragm Pressure Sensor

The ceramic Diaphragm pressure sensor is a ceramic piezoresistive pressure sensor refined by a thick ceramic process using a refined ceramic base. Overall dimension Φ18mm * 6.35mm. Ceramic is a recognized material with high elasticity, corrosion resistance, wear resistance, impact resistance and vibration.

The good thermal stability of the ceramic and the high-temperature sintering process of the thick film make the working temperature range of the ceramic pressure sensor up to -40 ~ 125 ℃. The ceramic’s high elasticity and creep resistance make the ceramic pressure sensor have good long-term stability. In addition, the corrosion resistance of ceramics makes it uniquely advantageous in the fields of refrigeration, chemicals and environmental protection.

ceramic diaphragm pressure sensors

Sensor characteristics

● Ceramic overload sensitive diaphragm
● Zero point, full range laser calibration
● Excellent anti-corrosion and anti-wear performance
● Anti-shock and anti-vibration
● High precision and high stability
● Wide operating temperature range
● Small size and easy packaging
● Environmental protection

Ceramic Capacitive Pressure Sensor

Ceramic capacitive sensors use the most advanced ceramic technology, thick film electronic technology, and SMT technology.

Compared with other current capacitive sensors, the ceramic capacitive sensor uses a dry ceramic capacitive sensor without intermediary liquid, thus obtaining superior technical performance.

  • High stability, better than 0.10oF “S. every year
  • The temperature drift is small, ± 0.150o / lOK.
  • It has strong anti-overload and impact capability, and the overload can reach several times to one hundred times of the measuring range. Even if the measuring element is directly hit with a hard object, it will not be damaged.
  • It can be applied to medium measurement in various occasions in many industries.
ceramic capacitive pressure sensor

Piezoresistive Pressure Sensor

 Piezoresistive pressure sensor

The piezoresistive pressure sensor is constructed using the piezoresistive effect of single crystal silicon. A single crystal silicon wafer is used as an elastic element, and an integrated circuit process is used on the single crystal silicon membrane. A group of equivalent resistors are diffused in a specific direction of the single crystal silicon, and the resistors are connected into a bridge circuit. The single crystal silicon wafer is placed on Sensor cavity. When the pressure changes, the single crystal silicon produces strain, so that the strain resistance directly diffused thereon changes proportional to the measured pressure. Then the bridge circuit obtains the corresponding voltage output signal.

Low-Pressure Transducer
Combined Pressure and Temperature Sensor-Dual function
High Temperature Pressure Sensor
Ultra-High Pressure Senors

Frequently
Asked
Questions

The ceramic pressure sensor is mainly composed of three parts: ceramic ring, ceramic diaphragm and ceramic cover.

The ceramic diaphragm is used as a sensitive elastomer. It is made of 95% AL2O3 porcelain. It is required to be flat, uniform and dense, and its thickness and effective radius depend on the design range.

The ceramic ring is formed by hot die casting process at high temperature.

High temperature glass paste is used between the ceramic diaphragm and the ceramic ring. They are fired together by thick film printing and thermal firing techniques to create a force-sensitive cup-shaped elastomer with a perimeter support. That is, a rigid structure without creep should be produced in the peripheral fixed part of the ceramic.

On the upper surface of the ceramic diaphragm, that is, the bottom of the porcelain cup and tea set, the circuit of the sensor is made by thick film technology.

The circular groove in the lower part of the ceramic cover creates a corresponding gap between the cover and the diaphragm. Limits prevent rupture of the diaphragm due to excessive bending when overloaded, resulting in overload protection of the sensor.

There are many types of pressure sensors. Such as resistance strain gauge pressure sensor, semiconductor strain gauge pressure sensor, piezoresistive pressure sensor, inductive pressure sensor, capacitive pressure sensor, resonant pressure sensor, etc.

The most widely used pressure sensors are:
Diffused silicon piezoresistive pressure sensor,
Ceramic Piezoresistive Pressure Sensors,
sputtered thin film pressure sensor,
capacitive pressure sensor,
High temperature sapphire pressure sensor.
But the most widely used is the piezoresistive pressure sensor. It has a very low price and high accuracy and better linearity characteristics.

A pressure sensor works by converting pressure into an analogue electrical signal.

The demand for pressure measuring instruments increased during the steam age. When pressure sensing technologies were first manufactured they were mechanical and used Bourdon tube gauges to move a needle and give a visual indication of pressure. Nowadays we measure pressure electronically using pressure transducers and pressure switches.

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Sino-Inst offers Ceramic Pressure Sensors. A wide variety of Ceramic Pressure Sensors options are available to you. Such as free samples, paid samples. Sino-Inst is a globally recognized manufacturer of Ceramic Pressure Sensors, located in China. Sino-Inst sells through a mature distribution network that reaches all 30 countries worldwide. Pressure sensors products are most popular in Europe, Southeast Asia, and Mid East. You can ensure product safety by selecting from certified suppliers. With ISO9001, ISO14001 certification.

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