Description
| 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 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 | |||
Sensor |
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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 |
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| Radio Power |
12.6 mW (+11 dBm) non-adjustable
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| 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 |
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| Wireless Data Standard |
IEEE 802.15.4
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| Radio Operating Frequencies |
RXW-WCF-900: 904–924 MHz
RXW-WCF-868: 866.5 MHz RXW-WCF-921: 921 MHz RXW-WCF-922: 916–924 MHz |
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| Modulation Employed |
OQPSK (Offset Quadrature Phase Shift Keying)
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| Data Rate | Up to 250 kbps, non-adjustable | ||||
| Duty Cycle |
<1%
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| Maximum Number of Motes |
Up to 50 wireless sensors or 336 data channels per one HOBO RX station
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| Logging Rate |
1 minute to 18 hours
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| Number of Data Channels |
4
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| 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)
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| 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
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| Memory |
16 MB
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| 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) |
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| Weight |
Sensor and cable: 1.332 kg (2 lb, 15 oz)
Mote: 223 g (7.87 oz) |
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| 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 |
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| Environmental Rating |
Sensor: Weatherproof
Mote: IP67, NEMA 6 |
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