Soil Monitoring
ND-TRS12 Soil Moisture, Temperature & EC Sensor (Point)
What is the ND-TRS12? The ND-TRS12 is a point-measurement soil sensor for volumetric water content (VWC), temperature and bulk electrical conductivity. Suitable for both mineral soils (0–0.7 m³/m³) and soilless media (0–1.0 m³/m³) with ±0.03 m³/m³ typical accuracy and EC up to 20 dS/m — ideal for irrigation control, smart agriculture, greenhouses, parks and golf courses connected to the yDoc ML-525 datalogger.
The ND-TRS12 is a point-measurement soil sensor for volumetric water content (VWC), temperature and bulk electrical conductivity. Suitable for both mineral soils (0–0.7 m³/m³) and soilless media (0–1.0 m³/m³) with ±0.03 m³/m³ typical accuracy and EC up to 20 dS/m — ideal for irrigation control, smart agriculture, greenhouses, parks and golf courses connected to the yDoc ML-525 datalogger.
Key parameters
What the ND-TRS12 measures
Volumetric water content
Mineral 0–0.7 m³/m³, soilless 0–1.0 m³/m³, ±3 % VWC
Bulk electrical conductivity
0–20 dS/m, ±(5 % +0.01) at low EC
Soil temperature
–40 to +60 °C, ±0.3 °C in operating range
Direct integration
5 m cable to the yDoc ML-525 over SDI-12
Specifications
Technical specifications
| Parameter | Property | Value |
|---|---|---|
| Volumetric water content | Range (mineral) | 0.00–0.70 m³/m³ |
| Range (soilless) | 0.0–1.0 m³/m³ | |
| Apparent permittivity εa | 1 (air) to 80 (water) | |
| Resolution | 0.001 m³/m³ | |
| Accuracy | ±0.03 m³/m³ (±3 % VWC) typical in mineral soils | |
| Soil temperature | Range | –40 to +60 °C |
| Resolution | 0.1 °C | |
| Accuracy (–40–0 °C) | ±0.5 °C | |
| Accuracy (0–60 °C) | ±0.3 °C | |
| Bulk EC | Range | 0–20 dS/m |
| Resolution | 0.001 dS/m | |
| Accuracy (0–10) | ±(5 % + 0.01 dS/m) | |
| Accuracy (10–20) | ±8 % | |
| Mechanical | Cable | 5 m |
| Mounting | Single point in soil profile | |
| Output | Protocol | SDI-12 |
| Compatibility | yDoc ML-525 datalogger |
Applications
Where the ND-TRS12 is used
Irrigation control
Targeted irrigation triggered by VWC and EC at the specific depth that matters for your crop.
Smart agriculture
Field-level VWC + EC for nutrient management, fertigation control and yield optimisation.
Greenhouses & soil-less
Substrate VWC and EC monitoring in hydroponics and protected cropping systems.
Parks & landscapes
Smart irrigation of urban greenery and ornamental plantings.
Golf courses
Turf moisture and salinity for greens, fairways and tees.
Integration
Powered by the yDoc ML-525 datalogger
The ND-TRS12 connects directly to the yDoc ML-525 datalogger. The yDoc powers the sensor, schedules measurements, stores readings locally and transmits them to the Sensor-Online platform via 4G/LTE-M, NB-IoT, LoRaWAN, satellite or Ethernet — with up to 10 years of battery life.
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FAQ
Frequently asked questions about the ND-TRS12
What does the ND-TRS12 measure?+
When to use point vs profile?+
How is it installed?+
Ready to deploy the ND-TRS12?
Get a quote, technical advice, or a complete bundle with the yDoc ML-525 datalogger and Sensor-Online platform subscription.