Airmar 120WXH Weather Station Instrument

 

Airmar 120WXH Weather Station Instrument

The Airmar 120WXH Weather Station 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 is designed to keep the wind channel free of snow and ice.

• Ultrasonic wind readings
• Thermostatically controlled heater element
• Apparent Wind speed & angle
• Barometric pressure
• Air temperature
• Wind chill
• IPX6 Ingres protection
• Output: Via a single cable (various lengths available)
• NMEA 0183 protocol over RS-422 standard interface OR RS232 interface
• NOTE: The 120WXH CANNOT be used with an NMEA 2000^® CAN BUS network

Wind Data

• Wind Speed Range:
• 0 knots to 78 knots (0 MPH to 90 MPH, 0 m/s to 40 m/s)
• Wind Speed Resolution:
• 0.1 knot (0.1 MPH, 0.1 m/s)
• Wind Speed Accuracy @ 0°C to 55°C (32°F to 131°F), no precipitation*:
• Low Wind Speeds:
• 0 -10knots; 1knot RMS +10% of reading
• (0 MPH to 11.5 MPH; 1.1MPH +10% of reading)
• (0 m/s to 5 m/s; 0.5 m/s +10% of reading)
• High Wind Speeds:
• 10-78 knots; 2 knots RMS or 5%, whichever is greater
• (11.5 MPH to 90 MPH; 2.3 MPH or 5%, whichever is greater)
• (5 m/s to 40 m/s; 1 m/s or 5%, which ever is greater)
• Wind Speed Accuracy in wet conditions**:
• 5 knots RMS (5.7 MPH RMS, 2.5 m/s RMS)
• Wind Direction Range: 0° to 360°
• Wind Direction Resolution: 0.1°
• Wind Direction Accuracy @ 0°C to 55°C (32°F to 131°F), no precipitation*:
• Low Wind Speeds (5° RMS typical):
• 4 - 10 knots (4.6 MPH to 11.5 MPH, 2 m/s to 5 m/s)
• High Wind Speeds (2° RMS typical):
• >10 knots (>11.5 MPH, >5 m/s)
• Wind Direction Accuracy in wet conditions** (8° RMS Typical):
• 8 knots (>9.2 MPH, >4 m/s)

Pitch and Roll Data

• Pitch and Roll Range / Accuracy: ±50° / <1°

Air Temperature Data

• Air Temperature Range***: -40°C to 55°C (-40°F to 131°F)
• Air Temperature Resolution: 0.1°C (0.1°F)
• Air Temperature Accuracy: ±1.1°C (±2°F)* @ >4 knots wind (>4.6 MPH wind) (>2 m/s wind)

Barometric Pressure Data

• Barometric Pressure Range: 300 mbar to 1100 mbar (24 inHg to 33 inHg, 800 hPa to 1100 hPa)
• Barometric Pressure Resolution: 0.1 mbar (0.029 inHg, 0.1 hPa)
• Barometric Pressure Accuracy: ±1 mbar (±0.029 inHg, ±1 hPa) when altitude correction is available

Operating Temperature

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

Supply Voltage

• Supply Voltage: 12 VDC to 24 VDC
• Heater Supply Voltage: 24 VDC
• Supply Current (@ 24 VDC):
• <.1.0W (<42mA)
• Heater Supply Current (@ 24 VDC):
• <.60W (2.5A)

Data Input/Output

• Output: Via a single cable (various lengths available)
• NMEA 0183 protocol over RS-422 standard interface OR RS232 interface
• NOTE: The 120WXH CANNOT be used with an NMEA 2000^® CAN BUS network

Other Specifications for the Airmar 120WXH Weather Station

• Weight: 300 grams (0.8 lb)
• Communication Interface: NMEA 0183 (RS232 or RS-422 standard & CAN)
• Mounting Thread Size on Base: Standard 1”-14 UNS (3/4” NPT optional)
• Certifications and Standards: CE, IPX6, RoHS, IEC61000-4-2, IEC60945

RMS—Root Mean Square, LEN—Load Equivalency Number *When the wind speed is less than 2 m/s (4.6 MPH) and/or air temperature is below 0°C (32°F), wind, temperature, and relative humidity readings will be less accurate. **Wet conditions include moisture, rain, frost, dew, snow, ice and/or sea spray in the wind channel. ***Temperature results invalid during heater operation