HOBOnet Solar Radiation (Silicon Pyranometer) Sensor
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Overview
Measures light intensity for frequencies relevant to solar radiation. HOBOnet wireless sensors communicate data directly to the HOBO RX3000 or the HOBO MicroRX station or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset's innovative cloud-based software platform.
Features
Sensor Features
- Measurement range of 0 to 1280 W/m2 over a spectral range of 300 to 1100 nm
- Enclosed in an anodized aluminum housing with acrylic diffuser and O-ring seal
Wireless Features
- 900 MHz wireless mesh self-healing technology
- 450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops
- Up to 50 wireless sensors or 336 data channels per HOBO RX station
- Simple button-push to join the HOBOnet wireless network
- Onboard memory to ensure no data loss
- Powered by rechargeable AA batteries and built-in solar panel
Specifications
|
Measurement Range |
0 to 1280 W/m2 |
|
Spectral Range |
300 to 1100 nm |
|
Accuracy |
Typically within ±10 W/m2 or ±5%, whichever is greater in sunlight; Additional temperature induced error ±0.38 W/m2/°C from 25°C (0.21 W/m2/°F from 77°F) |
|
Angular Accuracy |
Cosine corrected 0 to 80 degrees from vertical (see Plot B); Azimuth Error <±2% error at 45 degrees from vertical, 360 degree rotation |
|
Resolution |
1.25 W/m2 |
|
Drift |
<±2% per year |
|
Operating Temperature Range |
-25° to 60°C (-13° to 140°F) with rechargeable 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 |
|
Wireless Data Standard |
IEEE 802.15.4 |
|
Radio Operating Frequencies |
RXW-LIB-900: 904–924 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 |
2 |
|
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 |
|
Memory |
16 MB |
|
Dimensions |
Sensor: 4.1 cm height x 3.2 cm diameter (1.61 x 1.26 inches) |
|
Weight |
Sensor and cable: 109 g (3.85 oz) |
|
Materials |
Sensor: Anodized aluminum housing with acrylic diffuser and O-ring seal |
|
Environmental Rating |
Sensor: Weatherproof |
|
Compliance Marks |
Image
Image
Image
  RXW-LIB-921
|
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