Multi depth soil moisture sensor for water-saving irrigation, flower horticulture, greenhouse, smart agriculture

Multi depth soil moisture sensor adopts FDR principle, according to the electromagnetic wave issued by the monitor in different dielectric coefficients of material frequency changes measured in each soil layer of humidity, the use of high-precision digital temperature sensor, measuring the temperature of each soil layer. Measuring the temperature and humidity of 10cm, 20cm, 30cm, 40cm, 50cm, 60cm soil layer at the same time, it is suitable for long-term and uninterrupted monitoring of representative soil; it can be built-in DTU and lithium battery, and can provide RS485 output, and it can also transmit the data to the Internet of Things data platform through 4G/5G wireless network, and view the data in real time with computer and mobile phone, which is convenient and quick, and greatly meets the needs of all aspects of use. It is convenient and quick, which greatly meets the needs of various aspects of use.

This soil temperature and humidity monitor (Multi depth soil moisture sensor) has many advantages such as lightweight, easy to install, easy to use, accurate measurement. The instrument adopts precision sensors and intelligent chips, and is composed of soil moisture sensor, soil temperature sensor, solar power supply and transmission device.

At present, the product is widely used in environmental information monitoring and collection in agriculture, forestry, environmental protection, water conservancy, meteorology and other industry sectors, and also applied to water-saving irrigation, flower gardening, grass pasture, soil quick test, plant cultivation, greenhouse control, fine agriculture and so on, in order to meet the needs of scientific research, production, teaching and other related work.

Multi depth soil moisture sensor product features                            

has the ability to measure moisture and temperature changes in multiple depths, standard nodes: 10cm, 20cm, 30cm, 40cm depth, can be customised 50cm, 60cm depth, real-time monitoring, fast and convenient;

1. It can be customised with different depths and configurations according to different applications;

2. Using special customised PVC plastic pipe, which can prevent aging and is more resistant to corrosion of acid, alkali and salt in the soil;

3. Using epoxy resin as sealing material, it can be immersed in water for a long time without leakage;

4. High measurement accuracy, reliable performance, less affected by the soil texture, suitable for all kinds of soil;

5. With multi-directional anti-wrong connection protection for power line, ground line and signal line;

6. Support RS485 digital output and GPRS wireless network data transmission according to demand;

7. Different power supply options: DC12~24V DC power supply; solar power supply, built-in long-lasting lithium battery continuous power supply, power supply capacity designed to last for 30 days at a time full (active reporting mode, 1 hour to report 1 time);

8. Free site setup and calibration design, site installation at any time at any time to use;

Multi depth soil moisture sensor technical parameters                           

1) Soil moisture (volumetric moisture content) measurement range: dry soil ~ moisture saturated soil, laboratory measurement accuracy: ± 3%, field measurement accuracy: ± 5%, humidity resolution: 0.1%;

2)Temperature measurement range: -40℃～80℃, measurement accuracy ±0.5℃, temperature resolution: 0.1℃;

3)Power supply: optional adapter DC12~24V wide voltage power supply or built-in lithium battery power supply;

4)Communication mode: RS485 communication, MODBUS communication protocol, (baud rate 9600 can be set, address 0-255 can be set); GPRS wireless communication;

5)Wiring: RS485 output 4-wire system, power positive, power negative, 485+, 485-;

6)Response time: response within 3s after power on;

7)Stabilisation time: about 10s into the stabilisation process after power on;

8)External dimensions: ϕ63mm, the length varies with the measurement depth of the sensor, the standard length is about 1000mm;

9)Sensor measurement principle: FDR frequency domain reflection method;

10)Power consumption: less than 10mA at static, 70 mA at sampling;

11)Operating environment: a 40 ℃ ~ 80 ℃; 0-100% RH;

12)Average trouble-free time: ≥25000h;

13)Sensing range: 99% is read from the outside of the tube within 10cm;

14) Shell protection level: epoxy resin as sealing material, ground part: IP67; below ground: IP68;