VSN800 Weather Station Product Manual
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Hardware Specifications
Power Specifications:
Power Requirements: 10 to 30VDC at 50mA
Operating Environment:
Temperature: -40°C to 60°C (-40 to 140°F)
Humidity: 0-100% Condensing
Pyranometer Sensors:
Range: 0 to 1750 W/m
2
Accuracy: +/-5%
Cosine Response 45° +/-1%
Cosine Response 75° +/-5%
Operational Temperature: -25 to 55°C (-13 to 131°F)
Ambient Air Temperature Sensor:
Range: -40° to 80°C (-40 to 176°F)
Accuracy: +/- 0.3°C (0.54°F)
Thermal Time Constant 30 sec.
PV Panel Temperature Sensor:
Range: -40° to 80°C (-40 to 176°F)
Accuracy: +/- 0.3°C (0.54°F)
Thermal Time Constant: 270 sec.
Cable Length 7.62m (25 ft.)
Anemometer:
Operational Temperature: -40 to 60°C (-40 to 140°F)
Speed
Range: 0 – 67 meters per second (150 mph)
Accuracy: Greater of 0.45m/sec. (1 mph) or 5%
Threshold: 0.89m/sec. (2 mph)
Direction
Range: 360°
Resolution: 22.5°
Accuracy: +/- 22.5°
Threshold: 0.9 m/sec. (2 mph) at a 10° deflection.
RS-485/422 Serial Specifications:
Mode: 2-wire half duplex
Connector: 4-position screw terminal
Max Speed: 19200 bps
Max. Modbus Poll Rate: 100 ms
Termination: 120 ohms (internal jumper enable)
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