Sensor nirkabel pemenang penghargaan yang bekerja dengan sistem HOBOnet untuk mengukur kelembapan tanah dan suhu tanah pada berbagai kedalaman menggunakan satu probe, sehingga pemasangannya cepat dan mudah.
Tersedia dalam tiga panjang probe: 45 cm (18 in), 60 cm (24 in), dan 90 cm (35 in)
Pengukuran kelembapan tanah di sepanjang seluruh segmen probe
Pengukuran suhu tanah pada beberapa titik
Volume pengaruh terbesar per pengukuran (2 L volume pengaruh per segmen 15 cm)
Penyaringan lanjutan hingga 400.000 pulsa per pengukuran menghilangkan pembacaan yang menyimpang dan memberikan data kelembapan tanah yang presisi dan konsisten
Rumah polikarbonat dan papan sirkuit bersegel epoksi melindungi komponen penting selama pemasangan dan penggunaan di lapangan
Pemasangan mudah dengan gangguan tanah minimal, dan tidak perlu menggali saat menggunakan pilot rod dan slide hammer opsional
Teknologi mesh nirkabel Sub-GHz yang dapat memperbaiki dirinya sendiri (self-healing)
Jarak nirkabel 450 hingga 600 meter (1.500 hingga 2.000 kaki) dan hingga lima hop
Hingga 50 sensor nirkabel atau 336 kanal data per satu stasiun HOBO RX
Bergabung ke jaringan nirkabel HOBOnet hanya dengan menekan tombol
Memori internal untuk memastikan tidak ada kehilangan data
Ditenagai oleh baterai AA isi ulang dan panel surya bawaan
Soil Moisture: Volumetric Water Content (VWC) |
|
|---|---|
| Measurement Range | In soil: 0 to 0.550 m³/m³ (volumetric water content) |
| Accuracy | ±0.02 m³/m³ (±2%) in most soils typical from 0° to 50°C (32° to 122°F)* |
| Resolution | 0.001 m³/m³ |
Temperature |
|
| Measurement Range | -20° to 70°C (-4° to 158°F) |
| Accuracy | ±0.5°C (0.9°F) |
| Resolution | 0.1°C (0.18°F) |
Depths Measured |
|
| RXW-GP3A-xxx | 45 cm (18 inches) total; three soil moisture zones, six temperature depths |
| RXW-GP4A-xxx | 60 cm (24 inches) total; four soil moisture zones, six temperature depths |
| RXW-GP6A-xxx | 90 cm (35 inches) total; six soil moisture zones, nine temperature depths |
Wireless Mote |
|
| Operating Temperature Range | Sensor: -20° to 70°C (-4° to 158°F) Mote: -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-GPxA-900: 904–924 MHz RXW-GPxA-868: 866.5 MHz RXW-GPxA-921: 921 MHz RXW-GPxA-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 | Maximum logging interval: 18 hours Recommended minimum logging interval: 5 minutes year round when using solar power with rechargeable batteries, 10 minutes when using non-rechargeable lithium batteries |
| Number of Data Channels | RXW-GP3A-xxx: 10 RXW-GP4A-xxx: 11 RXW-GP6A-xxx: 16 |
| Battery Type/Power Source | Two AA 1.2V rechargeable NiMH batteries, powered by built-in solar panel or two AA 1.5 V non-rechargeable 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 Mounting and Positioning the Mote), operation outside this range will reduce the battery service life With non-rechargeable lithium batteries: 1 year with a 10-minute logging interval |
| Memory | 16 MB |
| Dimensions | RXW-GP3A-xxx sensor length: 53.2 cm (20.9 inches) RXW-GP4A-xxx sensor length: 68.2 cm (26.9 inches) RXW-GP6A-xxx sensor length: 98.2 cm (38.7 inches) Sensor diameter: 3 cm (1.2 inches) Cable length: 3.5 m (11 ft 6 in) Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) |
| Weight | RXW-GP3A-xxx sensor: 351 g (12.4 oz) RXW-GP4A-xxx sensor: 408 g (14.4 oz) RXW-GP6A-xxx sensor: 526 g (18.6 oz) Cable: 180 g (6.5 oz) Mote: 226 g (7.97 oz) |
| Materials | Sensor: Polycarbonate housing encasing epoxy sealed circuit board Cable: Polyurethane Mote: PCPBT, silicone rubber seal |
| Environmental Rating | Mote: IP67, NEMA 6 |
