Soil moisture detector, soil moisture tester, easy operation, measures 0-100%, 0.1% resolution, with 1.5m cable for agriculture (Output 4-20mA, Operating Voltage 12-24V)

1. Product Composition: The soil moisture sensor consists of a power supply module, a transmission module, a zero drift and temperature compensation module, and a data processing module. 2. Powerful Function: The sensor integrates signal sampling and amplification, zero drift, and temperature compensation functions, which have minimal impact on soil quality and are widely used in a variety of fields. 3. 0-100% Measurement Range: High measurement accuracy, reliable performance, fast response, good interchangeability, and high data transmission efficiency. 4. Compact Design: This soil moisture sensor is small and lightweight, making it easy to carry and connect. The cable length is approximately 1.5 meters, which can meet usage requirements. 5. Durable Use: Supports constant dielectric signal output, good sealing, IP68 protection rating, can be directly buried in the ground and used, not easy to corrode or rust. Specification: Item Type: Soil Moisture Sensor. Material: ABS. Weight: Approx. 141g / 5oz. Probe Material: Stainless Steel. Sealing Material: Epoxy Resin. Measurement Parameter: Volumetric Soil Water Content. Measurement Range: 0-100%. Measurement Accuracy: ±3%. Resolution: 0.1%. Measurement Area: A cylinder with a diameter of 7cm and a height of 7cm surrounding the central probe. Probe Diameter: Approx. 3mm / 0.12in. Response Time: 2s. Cable Length: Approx. 1.5m / 4.9ft. Working and Storage Conditions: Working Temperature: -40-85°C Operating humidity: 0-100% RH Storage temperature: -40-125°C Storage humidity: Protection level: IP68 V: Voltage type A: Current type R: Type RS485 Operating voltage 7-24V 12-24V 7-24V Operating current 3-5mA 3-25mA 3-5mA Output signal Output signal 0-2V DC 4-20mA Protocol RTU Protocol RTU Protocol Communication method: RS485 communication, transmission distance Communication rate: 9600, n, 8, 1 Communication protocol: RTU protocol, the factory station number (device address) is station 2, which can be changed as needed. RTU protocol commands include: Read soil moisture value (plant is station 2). Operating principle: The FDR frequency domain method uses the principle of electromagnetic pulses to measure the dielectric constant (μ) of the soil as a function of the propagation frequency of electromagnetic waves in the medium to obtain the volumetric water content of the soil (μv). Scope of application: Suitable for water-saving agricultural irrigation, greenhouses, flowers and vegetables, pastures, rapid soil testing, plant cultivation, scientific experiments, underground oil, gas pipelines, and other corrosion monitoring applications. Wiring: Line line line red line black line white line Simulation power Positive power Negative signal Line color Red line Black line Yellow line Brown line Positive power RS485 Negative 485A 485B Example command format read: 02 03 00 00 00 01 84 39 Note: The first byte 02 at the beginning is the station number. If you have changed the station number setting, you must replace the first digit 02 with the station number you set. The last two digits 84 39 are CRC16 checksums, and clients must calculate them themselves. Example returned data command format: 02 03 02 01 1F BC 1C Note: Bits 4 and 5 of 01 1F correspond to the humidity value, and BC 1C corresponds to the returned CRC checksum.Soil moisture data analysis method: moisture = 0X011F/10 = 28.7% Changing your own station number: Method 1: Know the current station number and send the following command: 02 10 10 00 00 01 02 00 03 E3 60. Its function is to change the station number from No. 2 to No. 3. Note: Replace the italicized characters with the original station number and replace the regular characters with the value of the target station number you wish to change. Sending this command requires the client to calculate the CRC value themselves. Method 2: Know the current station number and send the following command: 02 06 10 00 00 03 CD 38. Its function is to change the station number from No. 2 to No. 3. Note: Replace the italicized characters with the original station number and the regular characters with the target station number you wish to change. The client calculates the CRC value themselves. Method 3: Forget the original station number; you must connect the product to the computer alone. Be careful: there cannot be any other 485 products on the bus. Use station 0 to operate them. The instructions are as follows: 00 10 10 00 00 01 02 00 03 FA 00. Note: The large characters correspond to the target station number you wish to change. The client calculates the CRC value themselves. This sensor uses the Frequency Domain Method (FDR) to measure soil moisture, which can be interpreted as the volumetric moisture content of the soil. The FDR (frequency domain) method for measuring soil moisture is primarily related to the measured soil pH, soil density, soil quality, and measurement depth. Troubleshooting and troubleshooting: 1. Sensor output signal is abnormal: Check if the supply voltage is stable. Check if the supply range is normal. Check if the line is virtual. 2. Sensor has no signal output: Check if the positive and negative power supply terminals and the ground wire are correctly connected. Check if the supply voltage meets the requirements. Maintenance: This instrument is a scientific and technological product with excellent design and functional principles, and special attention should be paid to its maintenance. The following suggestions will help you perform maintenance effectively: 1. Prevent the instrument from being scratched, maintain the integrity of the outer protective film, and increase the instrument's lifespan. 2. When using the instrument, please secure the connecting parts firmly to avoid damaging the instrument. 3. Rough handling of the instrument will damage the internal circuit board and its precise structure. 4. Do not paint the instrument, as the paint will trap debris in the removable parts and affect normal operation. 5. Use a soft, clean, dry cloth to clean the exterior of the instrument. 6. Regularly check the power supply to other connected equipment to ensure the instrument is functioning properly. 7. When cleaning, turn off the power, remove the sensor, then gently wipe the sensor surface and the inner surface of the constant current device with soft filter paper, and rinse with clean water. When cleaning, be careful not to scratch the sensor surface. Package List: 1 x Soil Moisture Sensor 1 x English Manual Note: 1. Please allow a 0-1 inch error due to manual measurement. Thank you for your understanding. 2.Monitors are not calibrated, so the color of the item shown in the photos may be slightly different from the actual object. Please consider the actual item as the standard. 3. Before measuring, a soil sample with uniform density should be selected. 4. Do not insert the sensor probe into the hard soil block to avoid damaging the probe. 5. Do not pull directly on the cable to move the sensor out of the soil. Hold the soil sample inside the outer epoxy packaging with your hand. 6. After use, use a brush to remove dust from the probe and dry it with a soft cloth to protect it from moisture and extend its lifespan. https://m.media-amazon.com/images/I/61a4qvgnFbL.jpg