| General Specifications |
| Sensor |
| Measurement Range |
0 to 10.2 cm (0 to 4 in.) per hour, maximum 4,000 tips per logging interval |
| Accuracy |
±4.0%, ±1 rainfall count between 0.2 and 50.0 mm (0.01 and 2.0 in.) per hour; ±5.0%,
±1 rainfall count between 50.0 and 100.0 mm (2.0 and 4.0 in.) per hour |
| Resolution |
0.01 in |
| Calibration |
Requires annual calibration; can be field calibrated |
| 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 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
Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high |
| Wireless Data Standard |
IEEE 802.15.4 |
| Radio Operating Frequencies |
RXW-TMB-900: 904–924 MHz
RXW-TMB-868: 866.5 MHz
RXW-TMB-922: 916–924 MHz |
| Modulation Employed |
OQPSK (Offset Quadrature Phase Shift Keying) |
| Data Rate |
Up to 250 kbps, non-adjustable |
| Duty Cycle |
<1% |
| Maximum Number of Motes |
50 motes per one RX Wireless Sensor Network |
| 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 (-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: 16.5 cm opening diameter (6.5 in.) x 24 cm (9.5 in.) high; 214 cm2 (33.2 in.2) 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 inches) |
| Weight |
Sensor and cable: 1.2 kg (2.7 lbs)
Mote: 223 g (7.87 oz) |
| Materials |
Sensor: UV-stabilized ABS plastic housing; tipping bucket mechanism with magnetic reed switch pivots on metal shaft
Mote: PCPBT, silicone rubber seal |
| Environmental Rating |
Sensor: Weatherproof
Mote: IP67, NEMA 6 |
| Compliance Marks |
RXW-TMB-900
RXW-TMB-868
RXW-TMB-922 |