Feature:
1. Corrosion Resistant: Adopts stainless steel probe with non electrolytic isolation design, ensuring no electrolysis and enhanced resistance to salt alkali corrosion.
2. Fine Workmanship: Resin casting at the probe interface for better water and corrosion resistance, with vacuum sealing using epoxy resin for improved sealing performance.
3. High Performance: Plug and play with quick response time, allowing for instant display of data within seconds of inserting the sensor into the soil.
4. Water Resistant: IP68 waterproof and corrosion resistant, can be used for extended dynamic monitoring either buried in soil or directly immersed in water.
5. Long Lasting: Long term burying in soil is possible, resistant to electrolysis and corrosion due to complete vacuum sealing, providing high accuracy and fast response.
Specification:
Item Type: Soil NPK PH Sensor Probe
Material: 304 stainless steel, plastic
Weight: Approx. 348g/0.77lb
Waterproof Grade: IP68
Size: Approx. 133x60x45mm/5.24x2.36x1.77in
Cable: Approx. 5m/16.40ft
Built in Sensors: Soil temperature, soil humidity, NPK, conductivity
Type: RS485 (For Modbus)
Power Supply Voltage: DC 9-30V
Load Capacity: Current output impedance ≤ 250Ω
Voltage Output Impedance ≥ 1KΩ
Measuring Range:
Soil Moisture: 0-60% (volume moisture content)
Soil Temperature: -40-80℃
Conductivity: 0-20000us/cm
NPK: 0-2000 mg/kg
Accuracy:
Soil Moisture: ±3% (0-35% measurement range)
±5% (35%-60% measurement range)
Soil Temperature: ±0.5℃
Conductivity: ±5%
NPK: ±2%FS
Resolution:
Soil Moisture: 0.1%
Soil Temperature: 0.1℃
Conductivity: 1us/cm
NPK: 1mg/kg
Working Environment: Soil temperature -40 ℃ ~ 80 ℃; soil humidity ≤ 60%
Protection Class: IP68
Probe Material: 304 stainless steel, plastic, anti corrosion aluminum zinc alloy electrode
Scope of Application:Scientific experiments, water saving irrigation, greenhouses, flowers and vegetables, grass pastures, soil quick measurement, plant cultivation, sewage treatment, grain storage and measurement of moisture content and temperature of various particles.
Wiring Method:
Default Line Sequence:
Line Color and Output Signal
Red: Voltage and Current: Power positive, RS485: Power positive
Black: A+
Yellow: B-
Green: Voltage and Current: Power negative, RS485: Power negative
Description of Sensor Communication Protocol:
If you are connecting multiple sensors to PLC, configuring or connecting to a programmable data collector, it is recommended to use the standard for ModBus-RTU protocol (hex sending and receiving).
Standard for ModBus-RTU communication protocol
1. Serial Port Format
8 data bits, 1 stop bit, no parity bit, baud rate 9600bps, the serial port debugging software is set to hex sending and receiving, the interval between two communications is at least 1000ms, the CRC in the manual is the parity bit, 2 words Festival.
2. Register Address
The YGC-SM comprehensive soil sensor can integrate up to 8 soil elements, namely soil temperature, soil moisture, electrical conductivity, and soil nitrogen, phosphorus and potassium content. Each element has its own register address.
The correspondence between register addresses and channels in for MODBUS is as follows:
Register Address and Aisle Data Shows:
0x0000: Channel 1 (TW) Signed number (-40~80℃), 0x7FFF (invalid/missed)
0x01 0x2C=30.0℃
0x0001: Channel 2 (soil wet) Signed number (0~60%), 0x7FFF (invalid/missed)
0x01 0x23=29.1
0x0002: Channel 3 (conductivity) Signed number (0-20000) us/cm, 0x7FFF (invalid/missed)
0x01 0xF4=500us/cm
0x0005: Channel 6 (nitrogen content) Signed number (0-2000) mg/kg, 0x7FFF (invalid/missed) 0x00 0xE1=225 mg/kg
0x0006: Channel 7 (phosphorus content) Signed number (0-2000) mg/kg, 0x7FFF (invalid/missed) 0x00 0x64=100 mg/kg
0x0007: Channel 8 (potassium content) Signed number (0-2000) mg/kg, 0x7FFF (invalid/missed) 0x00 0xA0=160 mg/kg
Troubleshooting :
The display value of the instrument is incorrect when the analog signal or RS485 is output. Correct data may not be acquired due to wiring problems or communication serial port failures. Please check whether the wiring is correct and firm, whether the serial port is occupied, and whether the serial port settings are correct;
Package List:
1 x
Soil NPK PH Sensor Probe
Note:
1. Please check whether the packaging is intact, and check whether the product model is consistent with the selection;
2. Do not live wiring, after the wiring is checked and correct, it can be powered on;
3. The length of the sensor line will affect the output signal of the product, do not change the product at will when using, if there is a need for change, please contact the manufacturer;
4. The sensor is a precision device, please do not disassemble it by yourself when using it, contact the sensor surface with objects or corrosive liquid, so as not to damage the product;
5. When measuring, the probes must be inserted into the soil.
6. Avoid strong sunlight directly irradiating the sensor and causing the temperature to be too high, and pay attention to protection for field use.
7. Do not bend violently, force the probe, do not pull the sensor wire hard or repeatedly, it will cause the root of the sensor line to be disconnected and cannot be repaired.
8. Due to the presence of radio frequency electromagnetic radiation in the air, it is not advisable to be in a state of electricity in the air for a long time.
9. When measuring the frozen ice layer, the moisture value will be low and inaccurate, and user compensation is required. This product is suitable for measuring ordinary yellow earth, black soil and red soil. It is not suitable for absolute moisture measurement of saline alkali, sandy, or other powdery objects with a large salt content.
10. The soil moisture calculated by this sensor is the soil volume moisture content (also known as soil volume moisture content), which is what people call "soil moisture" and "soil moisture" in the popular sense. The soil volume moisture content is calculated as the ratio of the volume of water in the soil to the volume of soil. 0% represents completely dry soil without any moisture, and 60% represents 100 volumes of s
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