Soil moisture sensor Rs485 for arduino

NBL-S-THR Soil Temperature and Moisture Sensor Introduction:

NBL-S-THR Soil Temperature and Moisture Sensor is a high-precision, high-sensitivity instrument for measuring soil moisture, suitable for various applications such as soil moisture monitoring, water-saving irrigation, greenhouses, grassland pastures, and soil speed measurement. This sensor supports RS485 output, allowing for easy connection to Arduino, providing users with great flexibility and convenience.

NBL-S-THR Soil Temperature and Moisture Sensor Features:

1. High Precision and Sensitivity: The NBL-S-THR sensor utilizes advanced electromagnetic pulse technology to accurately measure the apparent dielectric constant of soil, thereby obtaining the actual moisture content.

2. Wide Application Range: This instrument is applicable to various soil moisture monitoring scenarios, including agricultural production, environmental protection, and scientific research.

3. Strong Anti-Interference Ability: The NBL-S-THR sensor is capable of resisting interference from metal ions and other external factors, ensuring the accuracy of measurement results.

4. RS485 Output: The sensor supports RS485 output, enabling easy connection to Arduino or other RS485-compatible devices for real-time data transmission and processing.

5. Easy Installation and Use: The NBL-S-THR sensor is connected to the probe via a coaxial cable, making installation simple. Users can easily read soil moisture data through Arduino and further process and control the data based on their requirements.

Soil temperature and moisture sensors basically work by utilizing physical or chemical properties to measure moisture content and temperature in the soil. The following are common operating principles:

1. Soil moisture sensor working principle:

   Resistive Sensors: resistive soil moisture sensors use two or more electrodes to measure the resistance of the soil. When soil moisture content increases, the conductivity of the soil increases and the resistance decreases, so you can estimate the moisture content of the soil by measuring the resistance value.

   Capacitive Sensors: Capacitive soil moisture sensors utilize the principle that capacitance is proportional to the dielectric constant in the medium (soil). As the soil humidity increases, the dielectric constant in the soil will also increase, thus changing the capacitance value of the sensor, by measuring the capacitance value to calculate the soil humidity.

  Frequency domain reflective (FDR) soil moisture sensors: use dielectric constant to estimate soil moisture. They are resilient to changes in soil type and usually have good long-term stability.

  Time Domain Reflectance (TDR) soil moisture sensors: Calculate soil moisture by sending a short pulse signal and by measuring the time it takes for the signal to travel between the sensor and the soil. They provide highly accurate measurements but are more costly.

In practice, these sensors are usually connected to a data acquisition system, which transmits the measured soil moisture and temperature data to the data acquisition system for processing and analysis. Users can receive and manage the data from the sensors through the data acquisition system and perform operations such as irrigation and greenhouse control as needed.

Soil moisture and temperature sensors are widely used in agriculture, gardening, environmental monitoring and scientific research, and specific application scenarios include but are not limited to the following:

1. Agricultural irrigation management: agricultural irrigation is one of the main application scenarios for soil moisture sensors. The sensor can help farmers monitor soil moisture, adjust the irrigation system according to real-time data, realize precise water supply, avoid overwatering or drought, and improve crop yield and quality.

2. Plant growth monitoring: In greenhouses, greenhouses and other environments, soil moisture temperature sensors can be used to monitor the soil moisture and temperature conditions required for plant growth, helping to control the indoor environment, create suitable growing conditions and improve plant growth efficiency.

Soil temperature and humidity sensors monitor soil temperature and moisture and provide detailed data on soil moisture. Soil temperature and moisture sensors are capable of measuring soil information at different depths and are highly accurate, easy to use and work well even when buried in the soil for long periods of time. Traditional irrigation methods are more frequent and take longer to irrigate because the temperature and humidity cannot be grasped, which results in a huge waste of water. By using the sensors to obtain information on soil moisture, water saving irrigation can be achieved, both in terms of timing and quantity, and also in terms of reducing water waste.

Conclusion:

The NBL-S-THR Soil Temperature and Moisture Sensor is a powerful and stable instrument for soil moisture measurement. Its high precision and sensitivity meet various soil moisture monitoring needs and are widely applied in agricultural production, environmental protection, scientific research, and other fields. With RS485 output connecting to Arduino, users can conveniently achieve real-time data transmission and processing, providing effective technical support for soil moisture monitoring and water resource management.

Soil Moisture Temperature sensor data sheet

NBL-S-THR-Soil-temperature-and-moisture-sensors-Instruction-Manual-V4.0.pdf