Campbell-scientific Wireless Sensor Network (CWB100, CWS220, and CWS90 Manual de usuario descargar pdf (Pagina 20)

Wireless Sensor Network

2.3.2 CWS220 Electrical Specifications

Power: 2 AA Batteries

Average Current Drain:

300 μA with 15 minute polling

Radio: Internal 25 mW FHSS Radio

Absolute Accuracy: ±0.2°C @ -10° to +65°C; ±0.5°C @ -40° to +70°C

Repeatability: ±0.05°C @ -10° to +65°C; ±0.1°C @ -40° to +70°C

Response Time: <1 s to changes in target temperature

Wavelength Range: 8 to 14 μm (corresponds to atmospheric window)

Field of View (FOV): 22° half angle

2.3.3 CWS220 Environmental Specifications

Temperature Range: -25° to +50°C (-13° F to + 122°F)

Humidity Range: 0 to 100%

Weather Resistance: IP67 rating for sensor and battery pack (battery pack

must be properly installed; each sensor is leak tested)

2.4 CWS655 Specifications

2.4.1 CWS655 Physical Specifications

Dimensions

Body: 14.5 cm x 6 cm x 4.5 cm (5.7” x 2.4” x 1.8”)

Rods: 12 cm (4.7”)

Weight: 216 g (7.6 oz)

2.4.2 CWS655 Electrical Specifications

Power: 2 AA Batteries

Average Current Drain:

300 μA with 15 minute polling

Radio: Internal 25 mW FHSS Radio

Soil Water Content

Accuracy:

± 2% when using Topps equation

EC Accuracy:

±(5% of reading + 0.05 dS/m)

Temperature Accuracy: ± 0.2°C

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Campbell-scientific Wireless Sensor Network (CWB100, CWS220, and CWS90 Manual de usuario Pagina 20