Soil Heat Flux Sensor for Weather Station, -40℃~60℃

The soil heat flux sensor for weather station is a high-precision instrument designed to measure soil heat transfer and energy balance in meteorological and environmental studies. Featuring a measurement range of 2000 to 2000 W/m², RS485 (ModBus protocol) output, and an IP68 waterproof and dustproof rating, it ensures reliable performance in long-term underground use. Built with flame-retardant epoxy resin and powered by DC 5-30V, SUCH soil sensor provides accurate, stable, and durable operation for applications in agriculture, climate observation, and geotechnical research.

Feature

• IP68 Protection: Soil sensor designed for long-term underground monitoring with excellent waterproof and dustproof performance.
• Direct Data Reading: Provides real-time soil heat flux data output without intermediate collection.
• Flame-Retardant Epoxy Resin: Fully sealed with flame-retardant epoxy for high durability and moisture resistance.
• Wide Voltage Supply: Operates on 5-30V DC power for flexible field applications.
• Thermopile Measurement: Measures temperature difference through thermopile sensing and calculates heat flux accurately.
• Standard ModBus-RTU Protocol: Supports direct communication with monitoring systems via ModBus-RTU.
• High Protection Level: IP68-rated waterproof and corrosion-resistant design for continuous soil burial.
• Reliable and Durable Material: High-density sealing prevents water ingress and ensures strong outdoor performance.
• Applicable Environments: Suitable for soil heat conduction, meteorology, and geotechnical research.
• Free Configuration Software: Includes free “485 configuration software” for easy setup and sensor ID adjustment.
• Customizable Cable Length: Default 2m cable, customizable to meet specific installation needs.

Dimension

Wiring Instructions

Installcation

1. Dig a side pit.
2. Then measure about 5 cm below the ground surface and dig a horizontal slot for placing the sensor.
3. Place the sensor horizontally with the red side facing up, then backfill the soil.
4. The sensor cable should not be directly above the installation point. Extend it horizontally about 1 m away before bringing it to the ground.
   If two sensors are installed 5 m apart, and one measures temperature, install the temperature sensor 2–4 cm from the soil surface.