Overview
Records rainfall in 0.2-millimeter increments. 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 software platform.
Features
Sensor Features
- 0.2 millimeter resolution
- Bird spikes
- Anti-debris screen that snaps into place
- Designed to meet World Meteorological Organization (WMO) guidelines
Wireless Features
- 900 MHz wireless mesh self-healing technology
- Wireless range of 450 to 600 meters (1500 to 2000 feet) and up to five hops
- Up to 50 wireless sensors or 336 data channels per HOBO RX station
- Simply press a button to join the HOBOnet wireless network
- Built-in memory to ensure no data is lost
- Powered by rechargeable AA batteries and built-in solar panel
Specifications
Measuring range
0 to 10.2 cm (0 to 4 in) per hour, maximum of 4000 points per recording interval
Accuracy
±4.0%, ±1 rain count between 0.2 and 50.0 mm (0.01 to 2.0 in) per hour; ±5.0%, ±1 rain count between 50.0 and 100.0 mm (2.0 to 4.0 in) per hour
Resolution
0.01 in.
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
Radio Power
12.6 mW (+11 dBm) not adjustable
Transmission Range
Reliable line-of-sight connection from 457.2 m (1500 ft) to 1.8 m (6 ft) high
Reliable line-of-sight connection from 609.6 m (2000 ft) to 3 m (10 ft) high
Wireless Data Standard
IEEE 802.15.4
Radio Operation Frequencies
- RXW-RGF-900: 904-924 MHz
- RXW-RGF-868: 866.5 MHz
- RXW-RGF-922: 916-924 MHz
- RXW-RGF-921: 921 MHz
Modulation used
OQPSK
Quadrature phase shift keying with offset
Data rate
Up to 250 kbps, not adjustable
Duty cycle
<1%
Maximum number of motes
Up to 50 wireless sensors or 336 data channels per one HOBO RX station
Recording rate
1 minute to 18 hours
Number of data channels
2
Battery type/Power supply
Two 1.2V AA NiMH rechargeable batteries, powered by built-in solar panel or two 1.5V AA lithium batteries for operating conditions of -40° to 70° C (-40° to 70° F) 158° F)
Battery life
With NiMH batteries: Typically 3 to 5 years when used in a range temperature range of -20° to 40° C (-4° to 104° F) and facing the sun (see Deployment and Mounting); operation outside this range will reduce battery life. With lithium batteries: 1 year, typical use
Memory
16 MB
Dimensions
Sensor: 16.5 cm (6.5 in) opening diameter x 24 cm (9.5 in) high; 214 cm2 (33.2 in2) collection area
Cable length: 2 m (6.6 ft)
Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 in)
Weight
Sensor and cable: 1.2 kg (2.7 lbs) Mote: 223 g (7.87 oz)
Materials
Sensor: UV-stabilized ABS plastic housing; Tilting spoon mechanism with magnetic reed switch that rotates on a metal shaft
Mote: PCPBT, silicone rubber seal
Environmental rating
Sensor: Weatherproof
Mote: IP67, NEMA 6
