Hobo RXW-LIA-xxx – Onset

HOBOnet PAR sensor, a complete system requires at least one Hobo RX3000 monitoring station, a HOBOnet wireless manager (RXMOD-RXW-xxx) or one Hobo MicroRX station (which has an integrated HOBOnet wireless manager).

Wireless

The HOBOnet wireless photosynthetic active radiation (PAR) sensor 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. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset’s innovative cloud-based software platform.

The sensor has a measurement range of 0 to 2.500 umol/m2/sec. over wavelengths from 400 to 700 nm. The sensor is enclosed in an anodized aluminum housing with acrylic diffuser. It has a wireless signal range up to 450 to 600 meter and up to five hops, the HOBOnet wireless repeaters (RXW-RPTR-xxx or RXW-RPTR-B-xxx) can be added to extend the range. You can add up to 50 wireless sensors or 336 data channels per Hobo RX station. A simple button push makes sure to join the HOBOnet wireless network and it has an onboard memory to ensure no data loss. It is powered by rechargeable AA batteries and built-in solar panel. This sensor operates in an outdoor environment and the RXW-LIA-xxx sensor supports the following measurements: light intensity and PAR.

Technical specifications

Measurement range: 0 to 2.500 μmol/m2/sec, wavelengths 400 to 700 nm

Accuracy: ±5 μmol/m2/sec or ± 5%

Operating temperature range: -25° to 60°C with rechargeable batteries and -40 to 70°C with lithium batteries

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 1,2 V 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

Battery life: with NiMH batteries: 3–5 years when operated in the temperature range -20° to 40°C and positioned toward the sun, with lithium batteries: 1 year

Memory: 16 MB

Cable length: 2 meters

Environmental rating: sensor: weatherproof and the mote: PCPBT, silicone rubber seal

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