Airmar 120WXH Weather Station Instrument

• Ultrasonic measurement of apparent wind speed and direction
• Thermostatically controlled heater element
• Barometric pressure
• Air temperature
• Wind chill
• Housing rated IPX6 for water-ingress protection
• Data output via a single cable (various lengths available)
  • NMEA 0183 serial data protocol over RS-422 standard interface or RS-232 interface
  • NOTE: The 120WXH cannot be used with an NMEA 2000^® CAN bus network.

The 120WXH has been carefully designed with a highly effective, thermostatically controlled, heating system for operation in ice-prone areas—both onshore and offshore. The heater element keeps the wind channel free of snow and ice. Reliability and performance, along with no moving parts, makes the 120WXH the model of choice in cold climates.

Specifications

Wind Speed:

• Range: 0 to 40 m/s
• Accuracy: 5% at 10 m/s at 4 angles
• Resolution: 0.1 m/s
• Calculations: User configurable damping

Wind Direction:

• Range: 0 to 359.9°
• Accuracy: ±3° at 10 m/s
• Resolution: 0.1°
• Calculations: User configurable damping

Air Temperature:

• Range: -40 to 80°C (-40 to 176°F)
• Accuracy: ±1.1°C at 20°C
• Resolution: 0.1°C

Barometric Pressure:

• Range: 300 to 1100 hPa
• Accuracy: ±0.5 hPa at 25°C (or better)
• Resolution: 0.1 hPa

Operating Temperature Range:

• WeatherStation: -25 to 55°C (-13 to 131°F)
• Heater: -40 to 55°C (-40 to 131°F)
• Heater cycles on when sensor reaches 1°C

Power:

• Supply Voltage: 12 to 24 VDC
• Supply Current: <30 mA (<0.7 W) at 24 VDC
• Heater Supply Current: <2.5 A (<60 W) at 24 VDC

Communications:

• Available Interface: Serial RS-232, Serial RS-422
• Available Protocol: Comma delimited ASCII, NMEA 0183
• Serial Output Rate: 1 Hz typical. User selectable. 10 Hz maximum recommended

Other:

• Weight: 325 g (0.7 lb.)
• Mounting-thread Size on Base: Standard 1″-14 UNS (3/4″ NPT optional)
• Certifications and Standards: CE, IPX6, RoHS, IEC61000-4-2, IEC60945, IEC60950_1C, IEC60950_22A, EN55022, EN55024, EN15014982