Deskripsi
Features
Sensor Features
- Measurement range of -40° to 100°C (-40° to 212°F)
- High accuracy: ± 0.2°C ( ± 0.36°F)
- Stainless-steel sensor tip
- Sensor and cable rated for immersion in water or soil up to 50°C for up to 1 year
Wireless Features
- 900 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 or 336 data channels per HOBO RX station
- 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
Specifications
| 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) | Without solar radiation shield: 2 minutes, 30 seconds in air moving 1 m/sec With RS3-B solar radiation shield: 5 minutes in air moving 1 m/sec | |
| 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-921: 921 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 | 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 (-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: 5.3 x 33 mm (0.2 x 1.3 inches) Cable length: 5 m (16.4 ft) Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) | |
| Weight | Sensor and cable: 82.5 g (2.91 oz) 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 | |
| Compliance Marks |  RXW-TMB-900 RXW-TMB-868 RXW-TMB-921 RXW-TMB-922 | |
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