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An award-winning wireless sensor that works with the HOBOnet system to measure soil moisture and soil temperature at multiple depths with a single probe for fast and easy installation. This durable sensor is available in three probes lengths, for measurements up to 90 cm (35 in) deep.
Featuring GroPoint's TDT5 technology with patented antenna design, this sensor measures soil moisture along the entire length of each probe segment, resulting in the largest volume of influence per measurement section. A high frequency of pulses per measurement provides precise and consistent soil moisture data.
We recommend using the optional pilot rod and slide hammer for quick and easy installation: the PILOT-ROD4 (28") for use with the 3-segment and 4-segment sensors (RXW-GP3A and RXW-GP4A) and the PILOT-ROD6 (40") for use with the 6-segment sensor (RXW-GP6A).
The HOBOnet system is a cost-effective and scalable wireless sensor network for web-enabled monitoring of field conditions for applications such as crop management, research, and greenhouse operations. And because it's wireless, you can deploy a network of sensors to easily monitor multiple points with a single system, while avoiding the risk of long cables that can interfere with field operations. Sensors are easily linked to the network, and data can be accessed through HOBOlink, Onset's innovative cloud software platform.
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An award-winning wireless sensor that works with the HOBOnet system to measure soil moisture and soil temperature at multiple depths with a single probe for fast and easy installation. This durable sensor is available in three probes lengths, for measurements up to 90 cm (35 in) deep.
Featuring GroPoint's TDT5 technology with patented antenna design, this sensor measures soil moisture along the entire length of each probe segment, resulting in the largest volume of influence per measurement section. A high frequency of pulses per measurement provides precise and consistent soil moisture data.
We recommend using the optional pilot rod and slide hammer for quick and easy installation: the PILOT-ROD4 (28") for use with the 3-segment and 4-segment sensors (RXW-GP3A and RXW-GP4A) and the PILOT-ROD6 (40") for use with the 6-segment sensor (RXW-GP6A).
The HOBOnet system is a cost-effective and scalable wireless sensor network for web-enabled monitoring of field conditions for applications such as crop management, research, and greenhouse operations. And because it's wireless, you can deploy a network of sensors to easily monitor multiple points with a single system, while avoiding the risk of long cables that can interfere with field operations. Sensors are easily linked to the network, and data can be accessed through HOBOlink, Onset's innovative cloud software platform.
| Property | Value |
|---|---|
| Soil moisture measurement range (in soil) | 0 to 0.550 m³/m³ |
| Soil moisture resolution | 0.001 m³/m³ |
| Temperature measurement range | -20° to 70°C (-4° to 158°F) |
| Temperature accuracy | ±0.5°C (0.9°F) |
| Temperature resolution | 0.1°C (0.18°F) |
| Depths measured (RXW-GP3A-xxx) | 45 cm (18 inches) total; three soil moisture zones, six temperature depths |
| Sensor operating temperature range | -20° to 70°C (-4° to 158°F) |
| Mote operating temperature range (with rechargeable batteries) | -25° to 60°C (-13° to 140°F) |
| Mote operating temperature range (with lithium batteries) | -40° to 70°C (-40° to 158°F) |
| Radio power (non-adjustable) | 12.6 mW (+11 dBm) |
| Transmission range (reliable connection, line of sight at 1.8 m (6 ft) high) | 457.2 m (1,500 ft) |
| Transmission range (reliable connection, line of sight at 3 m (10 ft) high) | 609.6 m (2,000 ft) |
| Wireless data standard | IEEE 802.15.4 |
| Radio operating frequency (RXW-GPxA-868) | 866.5 MHz |
| Modulation employed | OQPSK (Offset Quadrature Phase Shift Keying) |
| Data rate (non-adjustable) | Up to 250 kbps |
| Duty cycle | <1 % |
| Maximum number of motes | Up to 50 wireless sensors or 336 data channels per one HOBO RX station |
| Maximum logging interval | 18 hours |
| Recommended minimum logging interval (solar power with rechargeable batteries, year round) | 5 minutes |
| Recommended minimum logging interval (non-rechargeable lithium batteries) | 10 minutes |
| Number of data channels (RXW-GP3A-xxx) | 10 |
| 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 when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun; operation outside this range will reduce the battery service life) | 3–5 years |
| Battery life (with non-rechargeable lithium batteries, with a 10-minute logging interval) | 1 year |
| Memory | 16 MB |
| Sensor length (RXW-GP3A-xxx) | 53.2 cm (20.9 inches) |
| Sensor diameter | 3 cm (1.2 inches) |
| Cable length | 3.5 m (11 ft 6 in) |
| Mote dimensions | 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches) |
| Sensor weight (RXW-GP3A-xxx) | 351 g (12.4 oz) |
| Cable weight | 180 g (6.5 oz) |
| Mote weight | 226 g (7.97 oz) |
| Sensor materials | Polycarbonate housing encasing epoxy sealed circuit board |
| Cable material | Polyurethane |
| Mote materials | PCPBT, silicone rubber seal |
| Environmental rating (mote) | IP67, NEMA 6 |
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