Ceracore Ucs2 Ceramic Sensor with Compensated Sensor Output Signal, Capacitive Ceramic Sensor

Prod Model:	UCS2
For:	Capacitive Ceramic Sensor
Output Signal Type:	Mv

Product Description

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
• 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 tempera-
ture stability



Measuring principle 
   The Ceracore UCS2 basic material is Al ₂ O ₃ (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 perma-
nently. 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 Al ₂ O ₃ , 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

Operating conditions: Installation
Orientation: Arbitrary. Operate the sensor system with the diaphragm pointing downwards. Otherwise
observe the position dependent zero point shift for small pressure ranges (≤ 400 mbar).
Weight:approx. 17 to 23 g, depending on measuring range
Dimensions Electrical connection

Operating conditions: Environment
Ambient temperature range:-40 °C to +125 °C (also applies to storage temperature)
Degree of protection:IP 00 as per DIN 60529 (IEC529); Climate class 3K3 DIN EN 60721-3-3

Operating conditions: Process
Reference operating conditions:As per DIN IEC 60770, T = 25 °C
Media :Gases and liquids
Material :Diaphragm: aluminum oxide ceramic Al ₂ O ₃ (99.9 %)
Process temperature limits:-40 °C to +125 °C, compensation temperature -20 °C to +80 °C
Thermal change:Thermal change of the lower range-value in the compensation temperature range: max. ±0.75 % of span, with extended specification ±1 % of spanThermal change of output span in the compensation temperature range: max. ±0.5 % of span. With measuring ranges ≤0.4 bar ±0.8 % of span, with extended specification ±1 % of span
Limiting medium pressure range:Overload limit: see "Ordering information" section, Overload influence: negligible
Vacuum resistance:UCS2 with nominal value 400 mbar up to 70 bar: 0 mbar abs
                                UCS2 with nominal value 200 mbar: 500 mbar abs (Version M in Ordering information)
                                UCS2 with nominal value 100 mbar: 700 mbar abs (Version L in Ordering information)

Ordering information
Ceracore UCS2

Sensor range; Overload (other measuring ranges and special versions on request)

A   0...100 mbar / 10 kPa/1.5 psi absolute; 4 bar/400 kPa/60 psi

B   0 to 200 mbar /20 kPa/3 psi absolute; 6 bar/600 kPa/ 90 psi

C  0 to 400 mbar /40 kPa/6 psi absolute; 6 bar/600 kPa/ 90 psi

D  0 to 1 bar /100 kPa/15 psi absolute; 10 bar/1 MPa/ 150 psi

E  0 to 2 bar /200 kPa/30 psi absolute; 18 bar/1.8 MPa/ 270 psi

F  0 to 4 bar /400 kPa/60 psi absolute; 25 bar/2.5 MPa/ 375 psi

G  0 to 10 bar /1 MPa/150 psi absolute; 40 bar/4 MPa/ 600 psi

H  0 to 20 bar /2 MPa/300 psi absolute; 40 bar/4 MPa/ 600 psi

I   0 to 40 bar /4 MPa/600 psi absolute; 60 bar/6 MPa/ 900 psi

J   0 to 70 bar /7 MPa/1050 psi absolute; 105 bar/10.5 MPa/ 1575 psi

L  0 to 100 mbar /10 kPa/1.5 psi relative; 4 bar/400 kPa/ 60 psi

M  0 to 200 mbar /20 kPa/3 psi relative; 6 bar/600 kPa/ 90 psi

N 0 to 400 mbar /40 kPa/6 psi relative; 6 bar/600 kPa/ 90 psi

O  0 to 1 bar /100 kPa/15 psi relative; 10 bar/1 MPa/ 150 psi

P 0 to 2 bar /200 kPa/30 psi relative; 18 bar/1.8 MPa/ 270 psi

R 0 to 4 bar /400 kPa/60 psi relative; 25 bar/5 MPa/ 375 psi

S 0 to 10 bar /1 MPa/150 psi relative; 40 bar/4 MPa/ 600 psi

T 0 to 20 bar /2 MPa/300 psi relative; 40 bar/4 MPa/ 600 psi

U 0 to 40 bar /4 MPa/600 psi relative; 60 bar/6 MPa/ 900 psi

V 0 to 70 bar /7 MPa/1050 psi relative; 105 bar/10.5 MPa/ 1575 psi

Calibration; Unit

A see additional specification (special measuring ranges with extended specifications)

1 Sensor range; mbar/bar

2 Sensor range; kPa/MP

3 Sensor range; psi