Technical Information
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Sensor
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Wind Speed / Gust |
Wind Direction |
Measurement Range |
0 to 76 m/sec (0 to 170 mph) |
0 to 355 degrees |
Accuracy |
±1.1 m/sec (±2 mph) or ±5% of reading, whichever is greater |
±7 degrees |
Resolution |
0.5 m/sec (1.1 mph) |
1.4 degrees (0 to 355 degrees) |
Starting Threshold |
≤1 m/sec (2.2 mph) |
1 m/sec (2.2 mph) |
Turning Radius |
108 mm (4.25 in.) |
Approximately 135 mm (5.25 in.) |
Measurement Definition |
Cup revolutions are accumulated every three seconds for the duration of the logging interval (see Measurement Operation) Wind speed: Average speed for the entire logging interval Gust speed: The highest three-second wind recorded during the logging interval |
Unit vector averaging used; vector components for each wind measurement are calculated every three seconds for duration of logging interval (see Measurement Operation) |
Wireless Mote
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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 |
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 |
Two AA 1.2V 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: 470 x 191 x 121 mm (18.5 x 7.5 x 4.75 in.) 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: 1.332 kg (2 lb, 15 oz) Mote: 223 g (7.87 oz) |
Materials |
Sensor: Polycarbonate wind cups, sealed stainless steel bearing, UV-resistant ABS wind vane and black-anodized aluminum anemometer arm Mote: PCPBT, silicone rubber seal |
Environmental Rating |
Sensor: Weatherproof Mote: IP67, NEMA 6 |
Compliance Marks |
See User Manual |