Soil Moisture Sensor

Soil Moisture Sensor :

Soil Moisture Sensor is a soil detector, can monitor soil temperature, soil moisture and other parameters, little affected by soil salt content, suitable for all kinds of soil.Measuring elements: temperature and moisture of different soil layers, and optional three-axis inclination measurement.

Detection principle:

①. Soil moisture: Soil moisture is measured using FDR technology, which emits a high-frequency detection wave of nearly 1 GHz internally, which can penetrate the plastic pipe and effectively sense the soil environment. By measuring the dielectric constant of the soil, the volume percentage of soil moisture is measured.

②. Soil temperature: Use a thermistor to respond to the real-time temperature of the equipment.

③. Tilt measurement: Determine the tilt state of the device by detecting the tilt angle in the use environment.

Soil Moisture Sensor product advantages:

①. It is not affected by salt ions in the soil. Agricultural activities such as fertilizers, pesticides, and irrigation will not affect the measurement results, and the data is accurate.

② The electrodes of the sensor are not in direct contact with the soil, avoiding electrical interference with the soil and plants in the soil.

Protection level: The whole machine has IP68 protection level, and the whole machine can be immersed in water.   

Machine structure: The product adopts a layered observation structure, with a temperature observation point on the ground and a soil temperature and humidity measurement point every 10 cm underground to observe the soil temperature and humidity within the corresponding range.

Machine size: 59mm in diameter, different monitoring layers are configured according to the actual needs of the project, and the default 5-layer height is 790mm.

Measuring point spacing: The default is 10cm per layer, and the measuring point spacing can be changed according to project requirements.

Average power consumption: 0.96W (24VDC power supply, default 5-layer soil temperature and moisture)

Machine material: PVC high-strength industrial plastic pipe, internal potting.

Response time: ≤60s

Communication interface: RS485, providing specific 485 protocol and supporting secondary development.

Power supply mode: 10-30V wide DC power supply.

Soil Moisture Sensor Typical Accuracy:

①, Soil moisture: ±5% (@50%, 25℃);

②, Soil temperature: ±0.5℃ (25℃);

③. Inclination: X, Y axis: static accuracy ±0.1°, dynamic accuracy ±0.5°; Z axis: static accuracy ±0.5°, dynamic integral error.

Soil Moisture Sensor measurement range:

①. Soil moisture: 0%RH-100%RH

②Soil temperature: -15℃~+35℃

③. Inclination angle: -90°～90°

Resolution:

①. Soil moisture: 0.1%

②Soil temperature: 0.1℃

③, Inclination: 0.01°

Soil Moisture Sensor Installation Location:

①. Install the equipment after the crops are sown; the equipment installation site should be selected in a relatively high and flat place to prevent rainwater from flowing back into the equipment and causing equipment short circuit or line failure.

② Under full irrigation conditions, the area with less water should be selected as the monitoring location; under partial irrigation conditions, the moist area should be selected as the monitoring location;

③. Select a location where the crops grow evenly and can represent the growth of most crops;

④. Understand the root distribution of the monitored crops. Generally, choose a location close to the water-absorbing roots of the crops to determine the height of the equipment.

Installation method: Use drilling and grouting installation method, please refer to the instructions for details.

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