Ceramic Capacitive Pressure Sensor
ESS505 Ceramic Capacitive Pressure Sensor is designed with a ceramic base plate and a flush diaphragm, operating on the capacitive principle, where pressure measurement is determined by the variation in capacitance due to the deformation of the capacitor’s plates.
The movable capacitor plate is screen-printed on the flush ceramic diaphragm, which is subsequently affixed to the sensor’s body. This capacitor plate faces inward towards a cavity, allowing the diaphragm’s opposite side to be directly exposed to the medium being measured. The sensor’s vent hole is safeguarded against humidity and dirt by a specialized filter attached to the ceramic cell (PCS).
With a substantial diameter of 21 mm and the implementation of capacitive technology, the ESS505 sensor is adept at measuring low pressures, down to 5 bar. Despite this, ESS505 sensors are notable for their high burst pressure, rendering them highly reliable for a variety of applications.
Due to the excellent chemical resistance of Al2O3 ceramic (against aggressive gases, most solvents, and acids), additional protection is typically unnecessary. ESS505 sensors are available in both gauge and absolute versions.
ESS505 can also be conditioned to produce amplified signal, like rationmetric 0.5-4.5V.
Features & Benefits
- Pressure range 0-5bar‐100bar
- Pressure Gauge & Absolute
- Diameter Φ21mm
- 96% Al2O3 Ceramic
- Excellent resistance to corrosion and abrasion
- Condition to rationmetric 0.5-4.5V
Applications
- Cooling equipment & A/C system
- Automotive and vehicle
- Industrial process control
- HVAC system
- Refrigeration equipment
- Air conditioning unit
ESS505 Pressure Range & Overpressure
| Range (bar) | Thickness (mm) ±0.05 | Overload | Burst pressure | Capacity (Cx/100KHZ,1.0mv) | △C(pF) | Sensing area/D(mm) |
| 0-5 | 4.25±0.05 | 2X | 5X | 20±2 | 4.5-7.5 | 11.6 |
| 0-5 | 3.35±0.05 | 2X | 5X | 15±2 | 3.5-6.5 | 10.0 |
| 0-10 | 4.35±0.05 | 2X | 5X | 20±2 | 4.5-7.5 | 11.6 |
| 0-10 | 3.45±0.05 | 2X | 5X | 15±2 | 3.5-6.5 | 10.0 |
| 0-20 | 4.45±0.05 | 2X | 5X | 20±2 | 4.5-7.5 | 11.0 |
| 0-20 | 3.53±0.05 | 2X | 5X | 15±2 | 3.5-6.5 | 10.0 |
| 0-35 | 4.58±0.05 | 1.5X | 3X | 20±2 | 4.5-7.5 | 11.0 |
| 0-35 | 3.65±0.05 | 1.5X | 3X | 15±2 | 3.5-6.5 | 10.0 |
| 0-45 | 4.74±0.05 | 1.5X | 2X | 20±2 | 4.5-7.5 | 11.0 |
| 0-45 | 3.78±0.05 | 1.5X | 2X | 15±2 | 3.5-6.5 | 10.0 |
| 0-70 | 4.78±0.05 | 1.5X | 2X | 20±2 | 4.5-7.5 | 10.0 |
| 0-70 | 3.87±0.05 | 1.5X | 2X | 15±2 | 3.5-6.5 | 9.5 |
| 0-100 | 4.85±0.05 | 1.5X | 2X | 20±2 | 4.5-7.5 | 10.0 |
| 0-100 | 3.95±0.05 | 1.5X | 2X | 15±2 | 3.5-6.5 | 9.5 |
ESS505 Technical Specification
ESS505V Technical Specification
| Working voltage | 5.0V±10%DC |
| Current | <10mA |
| Output Voltage | 0.5-4.5V ratiometric |
| Overvoltage | <16Vdc |
| Working temperature | -40℃~135℃ |
| Storage temperature | -40℃~150℃ |
| Accuracy | ±1.0%Vcc@0-70℃，±2.0%Vcc@-40℃~135℃ |
| Non linearity | 0.25%FS Max |
| Hysteresis & repeatability | 0.25%FS Max |
| Response time | <10ms |
| Lifetime & reliability test | >5 million, 0bar -nominal pressure cycle |
| Long term stability | <0.25%FSO @25℃ （No time to accumulate） |
| Working medium | Oil, gas, refrigerants, coolants, chemical solvents, etc. (except conductive media) |
| ESD | Air discharge 15kV, contact discharge 8kV; |
| Weight | 6.0g (D:21mm) |
