Best soil temperature humidity sensor used in precision agriculture

The soil temperature and humidity sensor is a high-precision, high-sensitivity soil moisture measuring instrument. The electromagnetic wave pulse emitted by the sensor is transmitted to the probe through the coaxial cable, and then enters the soil medium to measure the apparent dielectric constant of the soil, thereby obtaining the real water content of the soil. The influence of metal ions, etc. This instrument can be widely used in soil moisture monitoring, water-saving irrigation, greenhouses, grassland pastures, soil speed measurement and other fields.

Technical parameters of soil temperature and humidity sensor

Measuring range: soil moisture 0~100%, soil temperature -50~100℃

Power supply mode: DC 12-24V

Resolution: soil moisture 0.1%, temperature 0.1℃

Accuracy: soil moisture ±3%, temperature ±0.5℃

Output form: RS485, current 4～20mA (RL≤250Ω), voltage 0-5V (RL≥1KΩ)

Product power consumption: about 0.3W

Operating environment: -40℃～80℃

Protection class: IP68

The sensor adopts the FDR principle, and reflects the soil water content by measuring the dielectric constant of the soil. The measured soil value is the soil moisture volume percentage, which is the current standard soil moisture measurement method.

Soil temperature and humidity sensor (also known as soil temperature and moisture sensor), a sensor for agriculture, is a product of smart agriculture, which can measure the temperature and humidity of soil and is suitable for soil moisture detection, water-saving irrigation, greenhouse control, fine agriculture, road detection, hydro-meteorology and other scenarios.

Soil temperature and humidity sensor consists of two sensors, which are soil temperature sensor and soil humidity sensor.

Soil temperature sensor

The working principle of soil temperature sensor is similar to that of ordinary temperature sensor, which is designed using thermistor principle, but the durability of soil temperature sensor is higher compared with conventional temperature sensor.

Soil moisture sensor

Compared to soil temperature sensors, there are more types of soil moisture sensors, which are generally classified as capacitive, resistive, ion sensitive, etc. according to their measurement principles.

Most of the soil temperature and humidity sensors have a temperature measurement range of -20°C to 80°C, a humidity measurement range of 0-100% RH, and a temperature accuracy of 0.5°C.