ESI - Model GroPoint Pro -Soil Sensor

The sleek, lightweight design installs quickly with minimal soil disruption. When installed vertically, the soil probe averages volumetric water content over a soil layer of about 6” (15cm). When installed horizontally, the soil sensor can measure soil moisture at a specific depth.

• Soil moisture sensor that measures the average volumetric water content
• Measures the soil temperature and electrical conductivity (EC)
• Soil moisture sensor can function as a wetting front detector
• 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.
• Can be custom calibrated by the customer—see the detailed procedure in the User Manual.

GroPoint™ Pro can be deployed in sensitive agriculture zones to enable full control of irrigation, increase water-use efficiency and provide an understanding of water movement throughout the soil.

• 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.

• 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).

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