Continuous soil moisture measurements over the entire length of the probe
Available in 6 different probe lengths up to 48” (120cm)
SDI-12 interface, optional Modbus over RS-485.
Based on our unique patented TDT5 technology. Less influenced by EC and soil type variations.
Comes with 3 m (9.8′) durable cable (Flying lead Standard, Optional 5-pin IP68-rated M-12 connector).
Factory-calibrated for most agricultural soils, but can be custom calibrated before shipping—request when ordering.
Soil sensor can be custom calibrated by the customer. Each depth can be calibrated to match soil horizon—see the detailed procedure in the User Manual.
GroPoint™ Profile is a scientific-grade and cost-effective soil moisture probe that measures the volumetric water content and soil temperature over multiple depths using a single probe. It 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.
Unlike other multi-depth soil moisture probes, GroPoint Profile is the only one on the market to provide a true soil moisture profile. It continuously measures the soil moisture across the entire length of the probe by averaging the volumetric water content across each segment (15cm or 6″). This unique feature provides continuous measurements of water movement throughout the soil rather than at discrete positions on the probe, which cause “dead spots” in the soil profile.
The sleek, lightweight design installs quickly using a pilot rod and slide hammer tool with minimal soil disruption. Our soil probe design eliminates the cumbersome excavation that is required when installing other profiling probes. GroPoint Profile is designed for vertical installation to make continuous soil moisture and soil temperature measurements over multiple soil layers.
Perfect for research, vineyards, vegetable crops, fruit trees and many more agricultural applications.
Eliminates need for multiple soil moisture sensors and cabling systems.
Measures across the entire length of the soil moisture probe, averaging the volumetric water content and soil temperature in each segment
Installs quickly and easily without excavating.
One SDI-12 address is used to read all segments, providing simplified installations. Optional MODBUS/RS-485 output.
Soil moisture readings can be user-calibrated with 3rd-order polynomials to meet custom requirements.
Low power requirements—suitable for remote, autonomous applications.
Patented TDT5 technology for scientific-grade accuracy and excellent long-term stability of measurements.
Fully potted electronics for excellent durability.
GroPoint Profile is available in six different multi-segment lengths, suitable for a wide range of agricultural crop monitoring.
You can also choose from two different configurations for soil temperature sensors, depending on your requirements. You can configure it with no temperature sensors if you only require soil moisture measurement, or the standard configuration places temperature sensors roughly every 10cm.
Choose the number of 15 cm (6″) segments that are right for your application. Custom lengths also available.
| Moisture | |
|---|---|
| Measurement range | 0% to 100% of VMC |
| Accuracy | ±2.0% * |
| Precision | < 0.2% |
| Temperature | |
| Measurement range | -20°C to +70°C (-4°F to 158°F) |
| Accuracy | ±0.5°C |
| Electrical | |
| Output | SDI-12 V1.3 (RS485 and Modbus optional) |
| Connection | Bare wire (optional 5-pin M-12 IP68 rated environmental connectors) |
| Input voltage | 6 to 14 VDC max. 18 VDC |
| Current consumption | Quiescent: Active: 15-20 mA (depending on number of segments) for 100 mS |
| Warm-up time on power up | 350ms |
| 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 |
| Physical | |
| Length | Each segment is approximately 15 cm (5.9″) long. Total length is the number of segments multiplied by 15 cm. |
| Probe weight | 2 segments: 292 g (10.3 oz.) |
| Temperature Placement | 2 segments: 3.5cm, 10cm, 20cm, and 30cm |
| Cable weight | 38 g per m (0.42 oz. per foot) |
| Standard cable | 5 m (16.4 ft.) 5xAWG22, with molded M12-5 Male code A |
| Warranty | 1-year limited parts and labour |
The GP-BTDL Bluetooth SDI-12 Data Logger Kit includes:
This kit will allow you to connect four SDI-12 Sensors. To connect eight sensors, you will need an additional M12 Male to Female Cable and 4-Port Expansion Bar, as well as a 2-Port Expansion Bar. Sensors must terminate in an M12 connector.
This kit uses the free GP Reader Android App.
The free GP Reader app (available for Android devices only) is used to check current conditions, download data and set up the sensor sampling interval (from one minute to 12 hours). With the app open on your smartphone, simply push the button on the GP-BTDL Bluetooth SDI-12 Data Logger to wake it up and automatically establish a wireless connection. Tap the Download button in the app to download all logged data. You can also check the current battery level of the Bluetooth Data Logger.
Retrieve sensor data wirelessly to your smartphone with a quick visit to the site
Stay connected up to 60m (200 ft) away
Operates with a Primary C-Cell battery (3.6V or 21.5 V alkaline)
Battery life of several years is typical
Water-resistant, IP65-rated enclosure
Data is retained even with no battery
Free GP Reader App available for Android devices
| Output | CSV text file via USB cable (included) |
| Sensor interface | SDI-12 / RS-485 (SDI-12 version) |
| Sensor port connector | 1x Switchcraft EN3P4F (4 female pins) |
| Maximum number of sensors | 10 (via multiple 4-Port SDI-12 Expansion Bars) Depending on measurement interval and type of sensor, additional sensors may be configured. Up to 60 SDI-12 sensors may be configured depending on cable length and sensor power requirements |
| Wireless protocol | Bluetooth 4.0 LE |
| Storage | 4 MB This is the equivalent of: > 200K GroPoint Lite measurements > 80K moisture and temperature measurements from a GroPoint Profile 4-segment sensor |
| Measurement interval | Configurable by user Range: 1 minute to 12 hours |
| Operating temperature range | -20°C to 65°C (-4°F to 150°F) |
| Storage temperature range | -20°C to 70°C (-4°F to 160°F) |
| Power | 3.0V lithium coin cell powers the memory (included) 2 x AA alkaline batteries OR 3.6V 1x C-cell Li-ion battery powers the sensors (included) |
| Battery life | Up to several years, depending on measurement interval and battery selection |
| Dimensions | 11.4cm x 8.0cm x 6.0cm (4.49” x 3.15” x 2.36”) |
| Weight | 216 g (7.62 oz) |
| Warranty | 1-year limited parts and labour |
| Environmental sealing | Enclosure: IP65 Push button: IP67 Sensor connectors: IP66/IP68 |
| Order Number | Part 2992-KIT |
The Radius Repeater uses unlicensed wireless spectrum to extend the range of a Radius Mote so it can be located up to 15km farther away from a central Radius Gateway.
Radius networks incorporate advanced low power, long range wireless technologies with proprietary mechanical engineering, power management and power supply to eliminate the need for expensive supporting infrastructure (large batteries, solar panels, enclosures, cables). By eliminating this infrastructure as well as the need for a data logger and communications uplink at each sensor site, the cost of the entire sensor network is reduced dramatically
All-in-one: Integrated radio, battery, power management, enclosure, mounting bracket—nothing else required.
Automatic: devices self-configure and form a wireless network automatically.
Simple: works out of the box. No tools required to install.
Extremely low power consumption: solar panel generally not needed, lasts for years without needing recharging.
Durable: IP67/IP68 rating for reliable long-term deployments in harsh environments.
Scalable: Up to 10 sensors per Mote/slave, 6 Motes/slaves per repeater, 3 repeaters per network.
| Communications | |
|---|---|
| Range | Up to 15 km (9.3 miles). Signals can penetrate certain foliage, buildings and obstructions. Range depends on antenna height/type and obstacles in path of line of sight. |
| Wireless frequency | 915 and 868 MHz certified, 860‐930 MHz frequency range |
| Sensors | |
| Maximum number of sensors | 10 |
| Sensor power | 12VDC switched, during measure‐ ment |
| Maximum output current | 138 mA (12V), up to 500 mA pulse (12V) with capacitor battery option (available 2018-Q3) |
| Sensor protocol | SDI‐12, v.1.3 |
| On-board sensors | Temperature sensor for optimizing power management and battery charging in cold operations. |
| Electrical | |
| Current consumption | Listen/idle: 300 μA Data transmit: 128 mA Stop/idle: 1.65 μA |
| Input voltage | 10‐18V, reverse polarity protected. |
| Internal battery options | Primary: 8.6Ah ‐ 38Ah, 3.6V Secondary: 10Ah Li‐ion rechargeable Custom option: Hybrid |
| TX output power | 128 mA |
| Optional external battery pack | 10‐18V |
| Environmental | |
| Operating temperature | -40°C to 75°C |
| Storage temperature | -40°C to 75°C |
| Physical | |
| LED indicators | RSSI, sensor, battery, operating status |
| Weight (excluding battery) | 12.8 oz (400g) |
| Weight (including full battery configuration) | 19.2 oz (600g) |
| Warm-up time | 30s |
| External antenna | Wip antenna, high-gain omnidirectional |
| Security | 128 bit AES encryption |
GroPoint™ Classic is our original analog soil moisture sensor, with a rugged design that has been proven over decades of use. The sensing element is manufactured from a solid 7mm (0.28″) stainless steel rod, and all electronics are sealed in water-proof epoxy.
The 4-20mA output integrates easily with common irrigation control and management systems, and it’s also available with 0-5mA output. The standard 5m cable can be extended to up to 150m (500′) and terminates in a rugged IP66/68 environmental connector or bare wires.
The soil moisture sensor features a larger area of influence than our other sensors—about 10cm (4″) surrounding the sensing element. It can be calibrated specifically for sandy soils, high salinity and clay soils or a broad range of soils. Please specify when ordering.
The GroPoint Classic responds immediately and accurately to changes in soil moisture. It’s extremely rugged, easy to install and requires virtually no maintenance, providing years of reliable service.
Fully potted electronics for excellent durability.
Stainless steel sensing element provides years of maintenance free, reliable sensing.
4-20 mA interface provide easy and simple integration into common irrigation management and control systems. Also available with 0-5mA output.
Moisture
| Moisture | |
|---|---|
| Measurement range | 0% to 100% of VMC |
| Accuracy | ±2.0% * |
| Precision | < 0.2%Temperature |
| Electrical | |
| Output | 4-20 mA (optional 0-5mA) |
| Connection | Bare wire (optional 3 pin, IP66/IP68 rated environmental connector) |
| Input voltage | 6 to 14 VDC max. 18 VDC |
| Current consumption | 0-5 mA: 15 mA (nominal), 20mA (max) 4-20 mA: 30 mA (nominal), 50 mA (max) |
| Warm-up time on power up | |
| 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 |
| Physical | |
| Dimensions | 26 cm x 8.9 cm x 4.4 cm (10.25” x 3.5” x 1.75”) |
| Weight (with standard cable) | 635 g (1.4 lb.) |
| Cable weight | 38 g per m (0.42 oz. per foot) |
| Standard cable | 5 m (16.4 ft.) Max. 500 ft. 3xAWG22 dual-shielded, twisted pair, rated for direct burial |
| Warranty | 1-year limited parts and labour |
* 8% to 42% VMC, in controlled laboratory conditions; factory calibrated for most agricultural soils. In field applications, accuracy may slightly decrease due to the inevitable heterogeneity of soil texture, soil compaction, moisture and fluctuation in soil temperature. The accuracy may also decrease in difficult soil conditions (higher clay and salinity content). In normal conditions, GroPoint sensors will maintain their accuracy from permanent wilting through field capacity in sandy loam through clay soils with less than 60% clay particles. Under moderately saline conditions. GroPoint sensors will maintain their accuracy up to 6 ds/m.
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