HMA Series
Amplified pressure sensors
3/15E / 1 1697 / B
www.first-sensor.com
PERFORMANCE CHARACTERISTICS2
(VS=3.0 VDC, TA=25 °C, RH=50 %, analog output signal is ratiometric to VS in the range of VS =2.7...4.2 V)
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All HMA...U...H3 (unidirectional devices)
All HMA...B...H3 (bidirectional devices)
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Specification notes:
1. All wetted materials are selected to give a high level of media compatibility. Media compatibility refers to media inside the
pressure port and lid. Improved media compatibility on high pressure port (backward side of sensor chip) since media has no
contact to electronic components. Nevertheless tests with the media used in the specific application are recommended.
2. Sensor is calibrated in air, changes in sensor behaviour based on physical effects caused by the specific media can occur.
Weight of the media and wetting forces can influence the sensor characteristics.
3. Storage temperature of the sensor without package.
4. Proof pressure is the maximum pressure which may be applied without causing durable shifts of the electrical parameters
of the sensing element.
5. Full Scale Span (FSS) is the algebraic difference between the output signal for the highest and lowest specified pressure.
6. Non-linearity is the measured deviation based on Best Fit Straight Line (BFSL).
7. Accuracy is the combined error from non-linearity and hysteresis. Hysteresis is the maximum output difference at any point
within the operating pressure range for increasing and decreasing pressure.
8. Total accuracy is the combined error from offset and span calibration, non-linearity, pressure hysteresis, and temperature
effects. Calibration errors include the deviation of offset and full scale from nominal values.
9. Max. delay time between pressure change at the pressure die and signal change at the output.
10. Tested 1h, up to 85 °C.
Sensors are electronic components and should be handled only in ESD save environments.