Sensor |
Wind Speed/Gust |
Wind Direction |
Measurement Range |
0 to 41.16 m/s (0 to 92.07 mph) |
0 to 359 degrees |
Accuracy |
±0.8 m/s (1.79 mph) or ±4% of reading, whichever is greater |
0.2 to 3 m/s (0.44-6.7 mph):
±4 degrees
>3 m/s (6.7 mph): ±2 degrees |
Resolution |
0.4 m/s (0.89 mph) |
1 degree (0 to 359 degrees) |
Measurement Definition |
Wind speed readings are taken every three seconds for the duration of the logging interval
Wind speed: Average speed for the entire logging interval
Gust speed: The highest three-second wind recorded during the logging interval
See Measurement Operation. |
Unit vector averaging used; vector components for each wind measurement are calculated every three seconds for duration of logging interval (see Measurement Operation) |
Operating Temperature Range Without Icing |
-15°C to 55°C (5°F to 131°F) |
|
Wireless Mote |
Operating Temperature Range |
-25° to 60°C (-13° to 140°F) with rechargeable batteries
-40 to 70°C (-40 to 158°F) with lithium batteries |
Radio Power |
12.6 mW (+11 dBm) non-adjustable |
Transmission Range |
Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high
Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high |
Wireless Data Standard |
IEEE 802.15.4 |
Radio Operating Frequencies |
RXW-WCG-900: 904-924 MHz
RXW-WCG-868: 866.5 MHz
RXW-WCG-921: 921 MHz
RXW-WCG-922: 916-924 MHz |
Modulation Employed |
OQPSK (Offset Quadrature Phase Shift Keying) |
Data Rate |
Up to 250 kbps, non-adjustable |
Duty Cycle |
<1% |
Maximum Number of Motes |
Up to 50 wireless sensors or 336 data channels per one HOBO RX station |
Logging Rate |
1 minute to 18 hours |
Number of Data Channels |
4 |
Battery Type/
Power Source |
Sensor: Photovoltaic panel, LIFEP04 3.2 V -600 mAh battery
Mote: Two AA 1.2 V rechargeable NiMH batteries powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40 to 70°C (-40 to 158°F) |
Battery Life |
With NiMH batteries: Typical 3-5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (see Deployment and Mounting), operation outside this range will reduce the battery service life
With lithium batteries: 1 year, typical use |
Memory |
16 MB |
Dimensions |
Sensor length: 380 mm (14.96 inches)
Sensor head diameter: 60 mm (2.36 inches)
Sensor rod diameter: 16 mm (0.63 inches)
Cable length: 3 m (9.8 ft)
Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) |
Weight |
Sensor and cable: 200 g (7 oz)
Mote: 223 g (7.87 oz) |
Materials |
Sensor: Polyacetal
Mote: PCPBT, silicone rubber seal |
Environmental Rating |
Sensor and cable: Weatherproof
Mote: IP67, NEMA 6 |