HOBOnet Wireless Temperature Sensor

Sensor

Measurement Range

-40° to 100°C

-40° to 212°F

Accuracy

±0.25°C from -40° to 0°C (±0.45°F from -40° to 32°F)

±0.20°C from 0° to 70°C (±0.36°F from 32° to 158°F)

±0.25°C from 70° to 100°C (±0.45°F from 158° to 212°F)

Resolution

0.02°C

0.036°F

Drift

<0.01°C (0.018°F) per year

Response Time (typical, to 90% of change)

2 minutes, 30 seconds in air moving 1 m/sec

Wireless Mote

Operating Temperature Range

-40° to 70°C

-40° to 158°F

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-x-900: 904-924 MHz

RXW-TMB-x-868: 866.5 MHz

RXW-TMB-x-921: 921 MHz

RXW-TMB-x-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

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

Two AA 1.5 V lithium batteries

Battery Life

1 year, typical use

Memory

16 MB

Dimensions

Sensor: 5.3 x 33 mm (0.2 x 1.3 inches)

Cable length: 0.3 m (1 ft), RXW-TMB-1-xxx; 1.8 m (6 ft), RXW-TMB-6-xxx

Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)

Weight

Sensor and cable: 7.6 g (0.27 oz), RXW-TMB-1-xxx; 35.2 g (1.24 oz), RXW-TMB-6-xxx

Mote: 223 g (7.87 oz)

Materials

Sensor: Stainless steel waterproof tip

Mote: PCPBT, silicone rubber seal

Environmental Rating

Sensor and cable: Immersion in water up to 50°C (122°F) for 1 year

Mote: IP67, NEMA 6