The working principle of ceramic pressure sensor
The corrosion-resistant ceramic pressure sensor has no liquid transmission. The pressure directly acts on the front surface of the ceramic diaphragm, causing the diaphragm to produce a slight deformation. The thick film resistor is printed on the back of the ceramic diaphragm and connected to form a Wheatstone bridge (closed). Bridge), due to the piezoresistive effect of the varistor, the bridge generates a highly linear voltage signal proportional to the pressure and proportional to the excitation voltage. The standard signal is calibrated to 2.0 / 3.0 / 3.3 according to the pressure range. mV/V, etc., compatible with strain gauge sensors.
Through laser calibration, the sensor has high temperature stability and time stability. The sensor has a temperature compensation of 0～70℃, and it can directly contact most media.
Features of ceramic pressure sensor
Sturdy ceramic sensitive diaphragm
Zero point, full scale laser calibration
Excellent corrosion resistance and wear resistance
Impact and vibration resistance
High precision, high stability
Wide operating temperature range
Small size, easy to package
The most competitive price
Ceramic pressure sensor technical parameters
Power supply voltage: 5～30VDC
Bridge arm resistance: 11k±20%
Measuring range: 100kPa～60Mpa
Response time: "1mS
Comprehensive error (including: linearity, hysteresis, repeatability): 0.2～0.4FS%
Zero point output: 0±0.2mV/V
Full scale output: 2.0～4.8mV/V
Temperature characteristics (temperature compensation range: 0～70℃): ±0.015 %FS/℃
Stability: "0.2% FSO/year
Working temperature: -40～135℃
Insulation resistance: "2kV