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HOBOnet T12 Soil Moisture, Temperature & EC Sensor

In stock
SKU
RXW-T12-868
£705.07 £587.56
 

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The HOBOnet T12 is a wireless sensor that works with the HOBOnet system to not only provide advanced soil moisture measurements (volumetric water content) with better accuracy and precision, but also measure soil temperature and electrical conductivity. 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 probe tips make installation easy, even in hard soil, and a large volume of influence provides more accurate results. Featuring the METER TEROS 12 soil moisture and temperature sensor, the HOBOnet T12 is backed by over 20 years of soil-moisture research and leverages METER’s trademark 70MHz frequency capacitance technology, minimizing salinity and textural effects. 

Sensors are easily linked to the HOBOnet network, and data can be accessed through HOBOlink, Onset's innovative cloud-based software platform.

We suggest using a TEROS Verification Clip, which provides a convenient way to confirm the operation and soil moisture accuracy of the sensor. Attaching this clip to a TEROS sensor provides a known soil moisture level for verifying measurement accuracy, without having to test the sensor in actual soils, which normally requires weighing soil samples and drying them in an oven. 

Sensor Features

  • Soil moisture (volumetric water content), soil temperature, and electrical conductivity 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 metre (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.

Note: A complete HOBOnet system requires at least one HOBO RX3000 Remote Monitoring Station, a HOBOnet Wireless Manager, and a HOBOnet Wireless Sensor, OR one HOBO MicroRX Station (which has an integrated HOBOnet Wireless Manager) and a HOBOnet Wireless SensorHOBOnet Wireless Repeaters can be added to extend the range.

More Information
Country of Manufacture United States
Brand Onset HOBO
Measurements Soil Electrical Conductivity (EC), Soil Moisture, Soil Temperature
Typical applications Environmental (Outdoor), Field Research
Explanation

Soil Moisture: Volumetric Water Content (VWC)
Measurement Range* 0.00 to 0.70 m³/m³ in mineral soils
Accuracy ±0.030 m³/m³ (±3%) typical from 0 to 50°C (32 to 122°F); ±0.020 m³/m³ (±2%) with soil specific calibration
Resolution 0.001 m³/m³
Dielectric Measurement Frequency 70 MHz
Temperature**
Measurement Range -40 to 60°C (-40 to 140°F)
Accuracy ±0.5°C (0.9°F) from -40 to 0°C (-40 to 32°F)
±0.3°C (0.54°F) from 0 to 60°C (32 to 140°F)
Resolution 0.1°C (0.18°F)
Bulk Electrical Conductivity (EC)
Measurement Range 0 to 20 dS/m (bulk)
Accuracy ±5% of reading + 0.01 dS/m from 0 to 10 dS/m
±8% of reading from 10 to 20 dS/m
Resolution 0.001 dS/m
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
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-T12-900: 904–924 MHz
RXW-T12-868: 866.5 MHz
RXW-T12-921: 921 MHz
RXW-T12-922: 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 50 motes per one HOBOnet Wireless Sensor Network
Logging Rate 1 minute to 18 hours
Number of Channels  4
Battery Type/
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)
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: 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)
Weight RXW-T12-xxx sensor and cable: 245 grams (8.64 oz)
Mote: 223 g (7.87 oz)
Materials Sensor: ASA plastic body with polyurethane epoxy filling and stainless steel pins
Cable: PVC, UV resistant and rodent repellent
Mote: PCPBT, silicone rubber seal
Environmental Rating Mote: IP67, NEMA 6
Compliance Marks Federal Communication Commission     RXW-T12-900
European Union Compliance     RXW-T12-868
Taiwan Compliance     RXW-T12-921
Australia and New Zealand Complicance     RXW-T12-922

* The sensor data can be post-calibrated if necessary (e.g. the sensor is used in non-mineral soil types or higher than standard accuracy is required). Users can apply a calibration equation to the data exported from HOBOlink. The VWC range will depend on the calibration equation.

** Temperature measurement, for applicable sensors, may not be accurate if sensor is not fully immersed in medium of interest, due to longer equilibration time.

Ideal For Professional, Agronomy

Standard delivery (Royal Mail) - £3.95 to £4.99

Available for purchases under £100. Your order should be with you within 4-5 working days.

 

Tracked delivery - £5.95 to £6.50

Our tracked delivery is either Royal Mail tracked, Parcelforce or UPS. Your order should be with you within 1-2 working days.

 

Next Day service - £9.95

Place your order before 2:30pm Monday - Friday and receive your order the next working day (excludes Saturdays, Sundays and Public holidays). Orders placed at the weekend are shipped on the next working day and usually arrive the following day. Goods shipped on a next working day service may be subject to delays by the courier which are outside of our control. Services to outlying areas may differ and take longer and enhanced services may not be available.

 

International delivery

International delivery is available for this product. The cost and delivery time depend on country.

 

Collection

You can collect from our showroom. Please call before visiting to ensure we have your order ready.

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