ND-TRS12
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.

ND-TRS12
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Soil Monitoring
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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

ParameterPropertyValue
Volumetric water contentRange (mineral)0.00–0.70 m³/m³
Range (soilless)0.0–1.0 m³/m³
Apparent permittivity εa1 (air) to 80 (water)
Resolution0.001 m³/m³
Accuracy±0.03 m³/m³ (±3 % VWC) typical in mineral soils
Soil temperatureRange–40 to +60 °C
Resolution0.1 °C
Accuracy (–40–0 °C)±0.5 °C
Accuracy (0–60 °C)±0.3 °C
Bulk ECRange0–20 dS/m
Resolution0.001 dS/m
Accuracy (0–10)±(5 % + 0.01 dS/m)
Accuracy (10–20)±8 %
MechanicalCable5 m
MountingSingle point in soil profile
OutputProtocolSDI-12
CompatibilityyDoc 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?+
The ND-TRS12 is a soil monitoring sensor that point-measurement sensor for volumetric water content, temperature and electrical conductivity. Place at the depth that matters most for your crop or research. It connects directly to the yDoc ML-525 datalogger for reliable remote data acquisition.
When to use point vs profile?+
The ND-TRS12 is well suited for precision agriculture, agronomic research, forestry & viticulture and similar applications. For your specific use case, our application engineers can recommend the right sensor and configuration.
How is it installed?+
The ND-TRS12 is supplied with mounting hardware appropriate to its application. Detailed installation instructions are included with the device and our team is available to support you with site planning, installation and commissioning.

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.