HOBOnet T11 Soil Moisture & Temperature Sensor
The HOBOnet T11 is a wireless sensor that works with the HOBOnet system to not only measure soil moisture (volumetric water content) with better accuracy and precision but also provide soil temperatur..
- Brands ONSET
- Product Code: RXW-T11-868
- Availability: 7-10 Days
Tags: soil moisture, sensor, soil temperature, HOBOnet
HOBOnet T11 Soil Moisture & Temperature Sensor
The HOBOnet T11 is a wireless sensor that works with the HOBOnet system to not only measure soil moisture (volumetric water content) with better accuracy and precision but also provide soil temperature measurements. Designed to withstand harsh environmental conditions, these durable sensors last up to 10 years, so you can leave them in the field for extended periods of time. Sharpened stainless-steel probes make installation easy, even in hard soil, and a large volume of influence provides better results and a more accurate view of soil moisture. Featuring the METER TEROS 11 soil moisture and temperature sensor, the HOBOnet T11 is backed by over 20 years of soil-moisture research and leverages METER’s trademark 70MHz frequency capacitance technology, minimizing salinity and textural effects.
Highlighted Features
Sensor Features
- Soil moisture (volumetric water content) and soil temperature measurements with one device
- Sensor lasts up to 10 years in the field
- Largest volume of influence (1010 mL) relative to sensor size, resulting in more accurate soil moisture measurements
- Easy installation with sharpened stainless-steel probes that are more resistant to damage/deterioration
- Less sensor-to-sensor variability
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
In what environment does this operate?
This operates in an outdoor environment.
What measurements does this support?
The supports the following measurements: Soil Moisture and Soil Temperature
Calibration Equations for HOBO® RXW-T11 and RXW-T12 Soil Moisture Sensors Application Note
TEROS Verification Clip (TEROS-CLIP) Manual
RXW TEROS-11 Soil Moisture and Temp Sensor (RXW-T11-xxx) Manual
RXW TEROS-11 Soil Moisture Temp Sensor (RXW-T11-xxx) Quick Start
| Sensor | |
| Environmental Rating | Mote: IP67, NEMA 6 |
| Number of Data Channels | 3 |
| Sensor Accuracy | Soil Moisture: Volumetric Water Content (VWC): ±0.030 m³/m³ (±3%) typical from 0 to 50°C (32 to 122°F); ±0.020 m³/m³ (±2%) with soil specific calibration Temperature: ±1.0°C (1.8°F) from -40 to 0°C (-40 to 32°F) ±0.5°C (0.9°F) from 0 to 60°C (32 to 140°F) |
| Sensor Dielectric Measurement Frequency | 70 MHz |
| Sensor Dimensions | Sensor: 7.47 x 9.4 x 2.39 cm (2.94 x 3.7 x 0.94 inches) Sensor needle length: 5.4 cm (2.13 inches) Sensor needle diameter: 0.32 cm (0.13 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) |
| Sensor Measurement Range | Soil Moisture: Volumetric Water Content (VWC): 0.00 to 0.70 m³/m³ in mineral soils Temperature: -40 to 60°C (-40 to 140°F) |
| Sensor Memory Capacity | 16MB |
| Sensor Resolution | Soil Moisture: Volumetric Water Content (VWC): 0.001 m³/m³ Temperature: 0.1°C (0.18°F) |
| Sensor Weight | RXW-T11-xxx sensor and cable: 245 g (8.64 oz) Mote: 223 g (7.87 oz) |
| Wireless Mote | |
| 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 lithium batteries: 1 year, typical use |
| Data Rate | Up to 250 kbps, non-adjustable |
| Duty Cycle | <1% |
| Logging Rate | Logging Rate - 1 minute to 18 hours |
| Maximum Number of Motes | 50 motes per one HOBOnet Wireless Sensor Network |
| Modulation Employed | OQPSK (Offset Quadrature Phase Shift Keying) |
| Power Source | Two AA 1.2V 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) |
| Radio Operating Frequencies | 866.5 MHz |
| 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 |
| Wireless Mote Operating Temperature Range | Sensor: -40 to 60°C (-40 to 140°F) Mote: -25° to 60°C (-13° to 140°F) with rechargeable batteries -40 to 70°C (-40 to 158°F) with lithium batteries |
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