HOBOnet Multi-Depth Soil Moisture Sensor
 

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    HOBOnet Multi-Depth Soil Moisture Sensor

    The HOBOnet Multi-Depth Soil Moisture Sensor is a 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.
    Part Number: RXW-GPxA-922
    Manufacturer:
    0Types Available
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    Product Files

    Get Deeper Insights into Soil Moisture With Our Multi-Depth Sensor

    Experience precise and efficient soil monitoring with our award-winning wireless sensor designed to seamlessly integrate with the HOBOnet system. This durable sensor is engineered to measure soil moisture and temperature at various depths using a single probe, ensuring quick and hassle-free installation.

    Available in three probe lengths, this sensor enables measurements up to 90 cm (35 in) deep, catering to diverse agricultural needs. Utilising GroPoint's TDT5 technology with patented antenna design, it delivers comprehensive soil moisture measurements along each probe segment, resulting in accurate and consistent data collection.

    This advanced sensor, featuring GroPoint™ TDT technology, is optimized for use within the HOBOnet (HOBO® RX) Wireless Sensor Network, providing wireless data transmission and seamless integration with HOBOlink® web-based software for comprehensive monitoring and analytics.

    For optimal installation, we recommend using the optional pilot rod and slide hammer. The PILOT-ROD4 (28") is compatible with the 3-segment and 4-segment sensors (RXW-GP3A and RXW-GP4A), while the PILOT-ROD6 (40") is ideal for the 6-segment sensor (RXW-GP6A), ensuring swift deployment and reliable functionality. We also recommend using Australian made Dormer Soil Augers to create a suitable hole for the soil sensor. OneTemp can supply a suitable auger for your soil type if required. This method will require a soil slurry method to backfill the hole around the sensor.

    The HOBOnet system offers a cost-effective and scalable wireless sensor network for web-enabled field condition monitoring, catering to applications such as crop management, research, and greenhouse operations. Its wireless nature allows for the deployment of multiple sensors, facilitating easy monitoring across various points without the constraints of long cables.

    Furthermore, seamless integration with HOBOlink, Onset's innovative cloud software platform, allows for easy sensor linking, data access, graph viewing, alarm setup, and data download, enhancing overall monitoring and management capabilities.



    Sensor Features

    • Available in three probe lengths: 45 cm (18 in), 60 cm (24 in), and 90 cm (35 in)
    • Provides soil moisture measurements over entire probe segment lengths
    • Delivers soil temperature measurements at multiple points
    • Offers the largest volume of influence per measurement (2 L volume of influence per 15 cm segment)
    • Utilises advanced filtering of 400,000 pulses per measurement to eliminate outlying readings and provide precise, repeatable soil moisture data
    • Equipped with a polycarbonate housing and epoxy-sealed circuit board to protect vital components during installation and throughout deployment
    • Enables easy installation with minimal soil disturbance, and no digging required when using the optional pilot rod and slide hammer


    Wireless Features

    • Employs Sub-GHz wireless mesh self-healing technology
    • Provides a wireless range of 450 to 600 meters (1,500 to 2,000 feet) and supports up to five hops
    • Supports up to 50 wireless sensors or 336 data channels per one HOBO RX station
    • Features a simple button-push process to join the HOBOnet wireless network
    • Includes onboard memory to ensure no data loss
    • Powered by rechargeable AA batteries and incorporates a built-in solar panel

    Technical Information

    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 (see diagram on page 3)
    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:
    Using Solar Power with Rechargeable Batteries Using Non-Rechargeable Lithium Batteries
    5 minutes year round 10 minutes
    See Battery Life specification for more details.
    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 inches)
    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 (7.9+7 oz)
    Materials Sensor: Polycarbonate housing encasing epoxy sealed circuit board
    Cable: Polyurethane
    Mote: PCPBT, silicone rubber seal
    Environmental Rating Mote: IP67, NEMA 6
    M12 connector: IP67
    Compliance Marks RXW-GPxA-900: See last page
    RXW-GPxA-868: The CE Marking identifies this product as complying with all relevant directives in the European Union
    (EU).
    RXW-GPxA-921: See last page
    RXW-GPxA-922: See last page

    Q. How are these sensors installed? Do I need any special tools?

    A. For fast and easy installation, with minimal soil disturbance, a pilot rod and slide hammer may be used. An auger may also be used to create a hole for the soil moisture probe. Consult the user manual (in the documentation tab) for more details.


    Q. Is calibration required for different soil types?

    A. This sensors come factory-calibrated for use in most soils. They can, however, be calibrated for specific soils.


    Q. How do I calibrate for specific soil types?

    A. The GroPoint user manual provides instructions on how to perform soil-specific calibration using a GP-USB Connect SDI-12 programming tool (available from https://www.gropoint.com/). Refer to Appendix A of the GroPoint manual, available at https://www.gropoint.com/products/soil-sensors/gropoint-profile/ from the Downloads tab.


    Q. How deep in the soil should these sensors be placed?

    A. This sensors is intended to have the top of the probe near the surface of the soil with the length of the probe determining the lowest depth of the soil moisture and temperature points.

    How to Install the HOBOnet Multi-Depth Soil Moisture Sensor

    This video contains a demonstration on how to install the HOBOnet Multi-Depth Soil Moisture Sensor, using the optional pilot rod and slide hammer. 

    Get Deeper Insights into Soil Moisture With Our Multi-Depth Sensor

    Experience precise and efficient soil monitoring with our award-winning wireless sensor designed to seamlessly integrate with the HOBOnet system. This durable sensor is engineered to measure soil moisture and temperature at various depths using a single probe, ensuring quick and hassle-free installation.

    Available in three probe lengths, this sensor enables measurements up to 90 cm (35 in) deep, catering to diverse agricultural needs. Utilising GroPoint's TDT5 technology with patented antenna design, it delivers comprehensive soil moisture measurements along each probe segment, resulting in accurate and consistent data collection.

    This advanced sensor, featuring GroPoint™ TDT technology, is optimized for use within the HOBOnet (HOBO® RX) Wireless Sensor Network, providing wireless data transmission and seamless integration with HOBOlink® web-based software for comprehensive monitoring and analytics.

    For optimal installation, we recommend using the optional pilot rod and slide hammer. The PILOT-ROD4 (28") is compatible with the 3-segment and 4-segment sensors (RXW-GP3A and RXW-GP4A), while the PILOT-ROD6 (40") is ideal for the 6-segment sensor (RXW-GP6A), ensuring swift deployment and reliable functionality. We also recommend using Australian made Dormer Soil Augers to create a suitable hole for the soil sensor. OneTemp can supply a suitable auger for your soil type if required. This method will require a soil slurry method to backfill the hole around the sensor.

    The HOBOnet system offers a cost-effective and scalable wireless sensor network for web-enabled field condition monitoring, catering to applications such as crop management, research, and greenhouse operations. Its wireless nature allows for the deployment of multiple sensors, facilitating easy monitoring across various points without the constraints of long cables.

    Furthermore, seamless integration with HOBOlink, Onset's innovative cloud software platform, allows for easy sensor linking, data access, graph viewing, alarm setup, and data download, enhancing overall monitoring and management capabilities.



    Sensor Features

    • Available in three probe lengths: 45 cm (18 in), 60 cm (24 in), and 90 cm (35 in)
    • Provides soil moisture measurements over entire probe segment lengths
    • Delivers soil temperature measurements at multiple points
    • Offers the largest volume of influence per measurement (2 L volume of influence per 15 cm segment)
    • Utilises advanced filtering of 400,000 pulses per measurement to eliminate outlying readings and provide precise, repeatable soil moisture data
    • Equipped with a polycarbonate housing and epoxy-sealed circuit board to protect vital components during installation and throughout deployment
    • Enables easy installation with minimal soil disturbance, and no digging required when using the optional pilot rod and slide hammer


    Wireless Features

    • Employs Sub-GHz wireless mesh self-healing technology
    • Provides a wireless range of 450 to 600 meters (1,500 to 2,000 feet) and supports up to five hops
    • Supports up to 50 wireless sensors or 336 data channels per one HOBO RX station
    • Features a simple button-push process to join the HOBOnet wireless network
    • Includes onboard memory to ensure no data loss
    • Powered by rechargeable AA batteries and incorporates a built-in solar panel
    Picture of HOBOnet Multi-Depth Soil Moisture Sensor (45cm/18")
    HOBOnet Multi-Depth Soil Moisture Sensor (45cm/18")
    The HOBOnet Multi-Depth Soil Moisture Sensor is a wireless sensor that works with the HOBOnet system to measure soil moisture and soil temperature at depths of 45cm with a single probe, for fast and easy installation.
    Part Number: RXW-GP3A-922
    $2,240.00 ex GST
    i h
    Delivery date: 4-6 weeks
    Picture of HOBOnet Multi-Depth Soil Moisture Sensor (60cm/24")
    HOBOnet Multi-Depth Soil Moisture Sensor (60cm/24")
    The HOBOnet Multi-Depth Soil Moisture Sensor is a wireless sensor that works with the HOBOnet system to measure soil moisture and soil temperature at depths of 60cm with a single probe, for fast and easy installation.
    Part Number: RXW-GP4A-922
    $2,548.00 ex GST
    i h
    Delivery date: 4-6 weeks
    Picture of HOBOnet Multi-Depth Soil Moisture Sensor (90cm/35")
    HOBOnet Multi-Depth Soil Moisture Sensor (90cm/35")
    The HOBOnet Multi-Depth Soil Moisture Sensor is a wireless sensor that works with the HOBOnet system to measure soil moisture and soil temperature at depths of 90cm with a single probe, for fast and easy installation.
    Part Number: RXW-GP6A-922
    $2,968.00 ex GST
    i h
    Delivery date: 4-6 weeks
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