Part Numbers
RXW-LIA-900 • RXW-LIA-868 • RXW-LIA-922 • RXW-LIA-921
HOBOnet PAR Sensor
Important Information
A complete system requires at least one HOBO RX3000 Remote Monitoring Station, a HOBOnet Wireless Manager, and a HOBOnet Wireless Sensor, OR one HOBO MicroRX Station (which has an integrated HOBOnet Wireless Manager) and a HOBOnet Wireless Sensor. HOBOnet Wireless Repeaters (RX-RPTR-xxx or RXW-RPTR-B-xxx) can be added to extend the range.
Overview
Measures light intensity for frequencies relevant to photosynthesis. 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. These sensors are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset's innovative cloud software platform.
Features
Sensor Features
- Measurement range of 0 to 2500 umol/m2/sec over wavelengths from 400 to 700 nm
- Enclosed in an anodized aluminum housing with acrylic diffuser
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 2500 μmol/m2/sec, wavelengths 400 to 700 nm |
|
Accuracy |
±5 μmol/m2/sec or ± 5%, whichever is greater in sunlight; Additional temperature induced error ±0.75 μmol/m2/sec/°C from 25°C (0.42 μmol/m2/sec/°F from 77°F) |
|
Angular Accuracy |
Cosine corrected 0 to 80 degrees from vertical; Azimuth Error <2% error at 45 degrees from vertical, 360 degree rotation |
|
Resolution |
2.5 μmol/m2/sec |
|
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-LIA-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 With lithium batteries: 1 year, typical use |
|
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-LIA-921
|
Compatible items
Tripod Parts, Kits and Masts
Mounting Accessories
Batteries
Grounding Wires
Compliance Certificates
Web-based Monitoring Systems - via remote communication
Communications
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