Vaisala WMS302 Guide de l'utilisateur Page 255

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Chapter 8 ____________________________________________________________ Technical Data
VAISALA______________________________________________________________________ 253
Dimensions
0105-058
Figure 170 Soil Moisture Sensor Dimensions in mm
Soil Moisture Sensor
Specifications
Table 81 Soil Moisture Sensor ECH2O-M3 Specifications
Property Description/Value
Measurement parameter Volumetric soil moisture
Full range
0 ... 1.0 m
3
/m
3
Accuracy ±3 % typical
±1 % with soil specific calibration from 0 to
50 °C ambient temperature
Measurement time 10 ms
Resolution
0.002 m
3
/m
3
Environment Can be buried to wide ranging soil types for
long periods without malfunction or
corrosion
Stabilization time 10 ms from power-up
Current consumption 2 mA when measuring
Dimensions l × w × h 254 × 32 × 1.5 mm (10 × 1.25 × 0.06 in.)
Cable length 3.28 m (10 ft)
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