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OVERVIEW
Get precise and reliable PAR readings, everyday
The HOBOnet Wireless Photosynthetic Active Radiation (PAR) Sensor measures light intensity for frequencies relevant to photosynthesis. HOBOnet Wireless Sensors communicate data directly to the RX3000 weather 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.
Highlighted 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
- 922 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 per RX3000
- 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
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.
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SPECIFICATIONS
Sensor
Measurement Range 0 to 2500 µmol/m2/sec, wavelengths 400 to 700 nm (see Plot A in User Manual) 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 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 batteriesRadio 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) highWireless Data Standard IEEE 802.15.4 Radio Operating Frequencies RXW-LIA-900: 904–924 MHz
RXW-LIA-868: 866.5 MHz
RXW-LIA-921: 921 MHz
RXW-LIA-922: 916–924 MHzModulation Employed OQPSK (Offset Quadrature Phase Shift Keying) Data Rate Up to 250 kbps, non-adjustable Maximum Number of Motes <1% Logging Rate Up to 50 wireless sensors or 336 data channels per one HOBO RX station Number of Data Channels 1 minute to 18 hours Battery Type / Power Source 2 Battery Life 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)Memory 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 useDimensions 16 MB Weight Sensor: 4.1 cm height x 3.2 cm diameter (1.61 x 1.26 inches)
Cable length: 2 m (6.56 ft)
Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)Materials Sensor and cable: 109 g (3.85 oz)
Mote: 223 g (7.87 oz)Environmental Rating Sensor: Anodized aluminum housing with acrylic diffuser and O-ring seal
Mote: PCPBT, silicone rubber sealCompliance Marks See User Manual -
SENSORS
Onset have a complete range of HOBOnet wireless sensors and external Smart Sensors to suit the HOBO RX3000, RX2100 Range, U30, H21 and H22 Data Logger series.
HOBOnet PAR Sensor
$1,146.20 NZD ex GST
The HOBOnet Wireless Photosynthetic Active Radiation (PAR) Sensor measures light intensity for frequencies relevant to photosynthesis. HOBOnet Wireless Sensors communicate data directly to the RX3000 weather station or pass data through other wireless sensors back to the central station.
