GroPoint - Model Pro - Soil Moisture Monitoring System
From GroPoint - Soil Moisture Sensors
GroPoint Pro Moisture, salinity (electrical conductivity), temperature and wetting front in a single SDI-12 sensor. The GroPoint Pro soil sensor is robust, reliable and highly accurate, providing cost-eective measurement of soil moisture, soil temperature, salinity (electrical conductivity or EC).
Product Details
This SDI-12 sensor also functions as a wetting front detector, providing a separate output for the wetting front measurement. By placing the tip of the sensor just above the bottom of your crop’s root zone, the wetting front measurement will indicate when water has reached the bottom of the probe during irrigation, allowing you to have your irrigation stop at precisely the optimal time to ensure only the water needed is applied.
Overview Specifications FAQs Downloads Inquire Related Products The sleek, lightweight design installs quickly with minimal soil disruption. When installed vertically, the sensor averages volumetric moisture content over a soil layer of about 6” (15cm). When installed horizontally, the sensor can be used to measure moisture at a specic soil depth.
GroPoint Pro can be deployed in irrigation-sensitive zones, such as around the root zone, to enable full control of precision irrigation needs.
- Provides SDI-12 output of moisture, temperature and salinity (electrical conductivity).
- Detects when wetting front has reached bottom of probe.
- Moisture readings can be user-calibrated with 3rd-order polynomials to meet custom requirements.
- Low power requirements—suitable for remote, autonomous applications.
- Patented TDT technology for scientic-grade accuracy and excellent long-term stability of measurements. 5
- Fully potted electronics for excellent durability.
Product Highlights
- Based on our unique TDT5 technology.
- Comes with 5 m (16.4′) durable cable (4-pin IP68-rated EN3 connector optional).
- Factory-calibrated for most agricultural soils, but can be custom calibrated before shipping—request when ordering.
- Low power consumption—suitable for remote applications.
- Comes with 5 m (16.4′) durable cable (4-pin IP68-rated EN3 connector optional).
- Can be custom calibrated by the customer—see detailed procedure in the user manual (see Downloads section).
Technical Specifications
Moisture
- Measurement range 0% to 100% of VMC
- Accuracy ±2.0% *
- Precision < 0.2%
Electrical conductivity/Salinity
- Measurement range 0 to 4 dS/m
- Accuracy ±3%
Temperature
- Measurement range -20°C to +70°C (-4°F to 158°F)
- Accuracy ±0.5 °C
Wetting Front
- Output parameter 0 to 10, corresponding to rate of change of moisture from last reading
Electrical
- Interface SDI-12 v.1.3
- Connection
- Bare wire
- Optional EN3 4-pin IP66/IP68 rated environmental connector
- Warm-up time
- Input voltage 6 to 14 VDC, max. 18 VDC
- Current consumption Quiescent: Active: 15-35 mA
Environmental
- Operating temperature -20°C to 70°C (-4°F to 158°F)
- Storage temperature -40°C to 85°C (-40°F to 185°F)
Physical
- Dimensions 19.6 cm x 2.0 cm x 0.56 cm (7.7” x 0.8” x 0.2”)
- Weight (with standard cable) 272 g (0.6 lb.)
- Cable weight 38 g per m (0.42 oz. per foot)
- Standard cable
- 5 m (16.40 ft.)
- 4xAWG22 dual-shielded, twisted pair, rated for direct burial
- Warranty 1-year limited parts and labour
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