Apex Sensor Technical Specifications
The CropX Apex sensor measures three key soil parameters to help monitor crop and irrigation conditions:
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Volumetric Water Content (Soil Moisture)
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Soil Pore Water Electrical Conductivity (ECpw)
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Soil Temperature
Available Sensor Lengths
The Apex sensor is available in three lengths:
| Model | Length | Number of Measurement Depths |
|---|
| Apex 30 | 24 in (61 cm) | 3 depths |
| Apex 60 | 35.8 in (91 cm) | 6 depths |
| Apex 90 | 47.6 in (121 cm) | 9 depths |
Measurements are taken approximately every 4 inches along the sensor.
Measurement Specifications
Soil Moisture
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Measurement method: Vector Reflectometry
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Range: 0–60% Volumetric Water Content (VWC)
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Accuracy: ±1%
Soil Pore Water Electrical Conductivity (ECpw)
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Range: 0.05–18.00 dS/m
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Accuracy: ±0.1 dS/m
Soil Temperature
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Range: -4°F to 158°F (-20°C to 70°C)
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Accuracy: ±2°F (±1°C)
Operating Specifications
| Specification | Value |
|---|
| Operating Temperature | 14°F to 158°F (-10°C to 70°C) |
| Storage Temperature | 32°F to 158°F (0°C to 70°C) |
| Operating Humidity | 0–100% RH |
| Storage Humidity | 0–85% RH |
| Measurement Time | Approximately 1 second per depth |
| Supply Voltage | 5 V nominal (5–12 V supported) |
| Current Consumption | 130 mA (active) |
Physical Specifications
Dimensions
Head Diameter
Leg Diameter
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Apex 90: 25.5–30 mm
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Apex 60: 27–30 mm
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Apex 30: 28.5–30 mm
Weight
| Model | Weight |
|---|
| Apex 30 | 1.32 lb (0.60 kg) |
| Apex 60 | 1.8 lb (0.82 kg) |
| Apex 90 | 2.2 lb (1.0 kg) |
Communication & Connectivity
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Communication protocol: SDI-12
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Connector: 8-pin M16 male connector
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Cable: 3 m cable with mating connector and open wire ends
Wire Colors
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Red – Power (V+)
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Yellow – Data
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Black – Ground
User Interface
Apex sensors are managed through the
CropX web application and
CropX mobile app.
This is the downloadable Brochure and the Specifications sheet for the CropX Apex Soil Sensor is attached below.