Soil NPK Sensor, RS485/4–20mA/0–10V/0–5V

This soil NPK sensor is designed for soil NPK measurement, enabling efficient soil condition monitoring. Supports long-term burial with strong resistance to electrolysis and corrosion. Fully waterproof with vacuum potting, ensuring reliable operation in demanding soil conditions. Widely used in agriculture, soil research, and plant cultivation.

Specification

Feature

• Wide Measurement Range: The soil NPK sensor offers a measurement range of 0–1999 mg/kg for accurate detection of nitrogen (N), phosphorus (P), and potassium (K) levels.
• Stainless Steel Probe: Durable and robust design for reliable soil insertion.
• Long-Term Burial Support: The soil NPK sensor is designed for stable, continuous operation when embedded in soil.
• Flame-Retardant Epoxy Sealing: Black epoxy resin provides excellent insulation and environmental protection.
• Direct Insertion Design: Easy installation with plug-in structure for fast deployment.
• NPK Detection: The soil sensor enables real-time monitoring of soil nutrients for better soil condition assessment.
• Corrosion & Electrolysis Resistance: Suitable for complex soil environments with extended service life.
• Vacuum Potting Process: The soil NPK sensor uses a vacuum potting process to enhance structural stability and overall reliability.
• Fully Waterproof Design: Performs reliably in влаж environments and harsh conditions.
• Multiple Output Options: The soil NPK sensor supports RS485, 4–20mA, 0–5V, and 0–10V outputs for flexible system integration.
• Wide Applications: Ideal for precision agriculture, forestry, soil research, geological exploration, and plant cultivation.

Size (unit: mm)

Wiring

Wiring for Transmitter Output

Wiring for RS485 Output

Note: The specific wire color should be based on the actual user manual.

Tips: What measurement methods does this soil NPK sensor use?

1. Quick Testing: The soil NPK sensor should be inserted at a suitable spot while avoiding stones or hard objects. Remove the surface soil to the desired depth while keeping the underlying soil structure intact, then insert the probe vertically without lateral movement. Multiple readings within a small area are recommended to calculate an average.
2. Long-Term Monitoring: The soil NPK sensor can be placed in a hole with a diameter of at least 20 cm. Insert the probe horizontally into the hole wall at the desired depth, refill the soil tightly, and allow it to stabilize. Continuous measurements and data recording can then be performed over days, months, or longer.