Campbell Scientific CS105/CS105MD Barometric Pressure Sensor - Manual (Page 5)

CS105/CS105MD Barometric Pressure
Sensor
1. General
The CS105 analog barometer uses Vaisala’s Barocap
® silicon capacitive
pressure sensor. The Barocap sensor has been designed for accurate and stable
measurement of barometric pressure. The CS105 outputs a linear 0 to 2.5
VDC signal that corresponds to 600 to 1060 mb. It can be operated in a
powerup or continuous mode. In the powerup mode the datalogger switches
12 VDC power to the barometer during the measurement. The datalogger then
powers down the barometer between measurements to conserve power.
2. Specifications
Operating Range
Pressure: 600 mb to 1060 mb
Temperature: -40
°C to +60°C
Humidity: non-condensing
Accuracy
Total Accuracy***
±0.5 mb @ +20°C
±2 mb @ 0°C to +40°C
±4 mb @ -20°C to +45°C
±6 mb @ -40°C to +60°C
Linearity*:
±0.45 mb @ 20°C
Hysteresis*:
±0.05 mb @ 20°C
Repeatability*:
±0.05 mb @ 20°C
Calibration uncertainty**:
±0.15 mb @ 20°C
Long-Term Stability:
±0.1 mb per year
* Defined as
±2 standard deviation limits of end-point non-linearity,
hysteresis error, or repeatability error
** Defined as
±2 standard deviation limits of inaccuracy of the working
standard at 1000 mb in comparison to international standards (NIST)
*** Defined as the root sum of the squares (RSS) of end-point non-linearity,
hysteresis error, repeatability error and calibration uncertainty at room
temperature
General
Dimensions: 9.7 cm x 5.9 cm x 2.1 cm (3.8” x 2.3” x 0.8”)
Weight: 110 g (4 oz)
Housing material: anodized aluminum
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