Contact Platform Support
Help CenterTDR-4 Soil Electrical Conductivity Sensor
Product Spotlights
Related Products
-
STYZ Micro Ecological Factor Sensor, Air Temperature and Humidity, Soil Temperature and Moisture, and Light Intensity.NegotiableMOQ: 1 Set -
TDR-3A Soil Moisture and Temperature SensorNegotiableMOQ: 1 Unit
-
L3 Tipping Bucket Rain GaugeNegotiableMOQ: 1 Unit
-
Weather Station: PC-4GF Integrated PV Environmental MonitoringNegotiableMOQ: 1 Unit
-
Weather Station: PC-5GF Distributed PV Environmental MonitoringNegotiableMOQ: 1 Unit
1. Product Overview
The TDR-4 Soil Electrical Conductivity (EC) Sensor is designed for accurate measurement of soil salinity by directly detecting soil electrical conductivity, which closely correlates with total soil salt content. With increasing soil salinization in recent years—caused by changes in surface water-heat balance and improper fertilization—the TDR-4 provides a reliable scientific tool for soil quality assessment and management.
Built with high-strength ABS engineering plastic and graphite electrodes, the sensor offers excellent sealing, corrosion resistance, and strong anti-interference capability, enabling long-term burial in soil without degradation. It features stable performance, high measurement accuracy, fast response, and long transmission distance, making it suitable for precision agriculture and environmental monitoring.
2. Working Principle
The TDR-4 measures soil electrical conductivity by applying a voltage between two embedded electrodes and detecting the resulting ionic current in the soil.
The measured EC value (mS/cm or μS/cm at 25°C) reflects the concentration of soluble salts in the soil—an essential indicator of soil fertility and potential salinity stress on crops.
Higher soil salinity can inhibit plant growth or cause root damage, making continuous EC monitoring critical for sustainable agriculture and irrigation management.
3. Key Features
High accuracy & stability for reliable long-term monitoring
Durable ABS housing with excellent waterproof and corrosion resistance
Graphite electrode design for strong anti-interference and stable signal output
Fast response time and long-distance signal transmission
Low soil disturbance, suitable for a wide range of soil types
Robust external pressure-molded shell, adaptable to harsh environments
Compatible with multi-point data acquisition systems
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Soil EC Range | 0.2 – 10 mS/cm |
| Soil Salinity Range | 0.02 – 9.45 g/L |
| Operating Temperature | -20°C to +50°C |
| Accuracy | <±5% |
| Relative Humidity | 0 – 100% |
| Stabilization Time | ~1 s after power-on |
| Response Time | Stable within 1 s |
| Working Voltage | 24V DC |
| Working Current | 30 mA |
| Output Signal | 4–20 mA standard current loop |
| Sealing Material | ABS engineering plastic |
| Cable Length | Standard 3 m (customizable) |
| Transmission Distance | <1000 m |
| Protection Level | IP68 |
5. Monitoring Method
The TDR-4 can be used for single-point or multi-depth monitoring. During installation, the probe must be fully inserted into the soil with electrodes in firm contact to ensure accurate and consistent readings.
6. Applications
The TDR-4 is widely used in:
Precision agriculture research
Smart irrigation and water-saving systems
Greenhouses and horticulture
Pasture and turf management
Soil salinity assessment and remediation
Wastewater treatment and environmental studies
Scientific soil analysis and crop cultivation research
7. Why Choose TDR-4?
By providing real-time soil salinity data, the TDR-4 helps optimize irrigation, prevent salinity stress, improve fertilizer efficiency, and support data-driven precision farming—making it an essential tool for modern agriculture and environmental monitoring.
8. About Company
Need more information? Feel free to leave a message or contact us.
Sales Manager: Xie Meng
Email: xiemenghit@gmail.com
Whats app: +1(416)8260959
Website: www.sunweather.ca
TikTok: sunshine.met.tech
QQ: 619243274
WeChat: 619243274
Send Inquiry to This Supplier
You May Also Like
-
Weather Station: PC-4 Environment Sensor for PV Power Plant-wind Speed, Solar Radiation, Atmospheric Pressure, RainfallNegotiableMOQ: 1 Set
-
Weather Station: PC-2-T2 PV Environmental Monitoring StationNegotiableMOQ: 1 Set
-
YGF-2 Dust Monitoring InstrumentNegotiableMOQ: 1 Unit
-
TBQ-2-A Solar Pyranometer Radiation SensorNegotiableMOQ: 1 Unit
-
TBS-4 Automatic Sun PhotometerNegotiableMOQ: 1 Unit
-
TBS-YG5 Automatic Solar Radiation Tracking SystemNegotiableMOQ: 1 Unit
-
TBK11 All Sky ImagerNegotiableMOQ: 1 Set
-
TBQ-2WX Solar Radiation CalibratorNegotiableMOQ: 1 Set
-
Weather Station: TRM-GPS5 Handheld Weather StationNegotiableMOQ: 1 Unit
-
Weather Station: TRM-GPS6 Handheld Network Weather StationNegotiableMOQ: 1 Unit
