UCS2 Ceramic Capacitive Pressure Transducer

Time:2018-05-08

UCS2 Ceramic Capacitive Pressure Transducer

UCS2 Ceramic Capacitive Pressure Transducer Application:

The pressure sensor element Ceracore UCS2 delivers a pressure-proportional voltage signal . We offer support for the integration of the Ceracore UCS2 into the customized application.

UCS2 Ceramic Capacitive Pressure Transducer Benefits:

– Dry capacitive ceramic sensor
– Basic ceramic material (99.9 % Al 2O3 )
– Extremely high overload limit
– Absolutely resistant to wear
– High temperature stability
– High long-term stability
– no hysteresis
– Corrosion-resistant
– Active electronics
– Sensor-specific signal conditioning
– High-accuracy pressure measurement with temperature stability Measuring principle

UCS2 Ceramic Capacitive Pressure Transducer Measuring Principle:

The UCS2 Ceramic Capacitive Pressure Transducer basic material is Al2O3(99.9 %), a highly resistant ceramic material for many aggressive gases and liquids. Cylindrical ceramic components (diaphragm, meter body) are bonded to form a high- strength, hermetically sealed pressure sensor element. With absolute pressure sensors, the vacuum of 3.0 x 10-6 mbar created in the production process between the diaphragm and the meter body remains permanently. This permits pressure measurements related to the vacuum. With gauge pressure sensors, the back of the diaphragm is vented, i.e. this sensor measures the gauge pressure relative to the atmospheric pressure. Elec- trically, the sensor element represents a plate capacitor whose capacitance change is the dimension for the pressure change. The capacitive measuring process satisfies the highest requirements concerning resolution and reproducibility. Together with the hysteresis-free behavior of the material Al2O3, it is the basis for the excellent specifications of the sensor. In addition, the Ceracore UCS2 is a dry measuring cell, i.e. there is no separating diaphragm or filling fluid which could influence the measurement. A further advantage of the capacitive ceramic sensor is its high overload resistance. After removal of the overload, it returns to the initial position without any damage or hysteresis.

Input
Measured variable:Choice of gauge pressure or absolute pressure
Measuring range:Gauge pressure measurement 0.1 to 70 bar, absolute pressure measurement 0.2 to 70 bar

Output
Zero point :0.50 V ± 0.05 V; applies to the respective lower range-value of the measuring range
Span:4.00 V ± 0.05 V
Characteristic curve:linear; max. non-linearity ≤0.2 % of span
Load:≥10 kΩ or ≤300 pF (with signal deviation <0.1 % of span)
Rise time:approx. 1 ms
Switch-on time:max. 10 ms
Long-term stability:max. 0.1 % of span per year
Output signal:0.5 to 4.5 V

Power supply
Supply voltage:
• 5 V DC stabilized, minimum 4.5 V / maximum 5.5 V
• Influence of supply voltage: no influence on linearity / proportional on lower range-value/ proportional on span, no influence on temperature compensation
Current consumption :Maximum 2 mA at a supply voltage of 5 V