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LI-300/LI-350 LI-COR Soil Moisture Sensors
Reference:
LI-300/LI-350
The LI-300 and LI-350 deliver clear, dependable soil moisture measurements for agriculture, environmental research, greenhouses, and irrigation management. The LI-350 adds direct electrical conductivity output, while the LI-300 keeps daily decisions simple with straightforward analog output.
LI-COR LI-300 and LI-350 sensors provide clear, dependable soil moisture measurements for agricultural and environmental applications. Their durable, versatile design makes them easy to integrate into field campaigns, weather stations, greenhouses, growth chambers, and long-term monitoring programs.
The LI-300 measures soil moisture and temperature. The LI-350 measures soil moisture, temperature, and electrical conductivity (EC), providing direct EC values with no post-processing and lowering the risk of user error.
Both sensors are built for multi-season use across a wide range of soils and substrates. Their rugged design supports long-term deployment in the field, greenhouse, and other demanding environments, with ready-to-use data for faster decisions.
Typical applications include environmental monitoring, weather stations, irrigation management, greenhouses and vertical farms, research growth chambers, crop monitoring, landscape management, and horticulture.
Configurations and cabling
| Model | Standard configuration | Cable length options |
|---|---|---|
| LI-300 | 5 m cable (LI-300-BL-5) | 10 m, 25 m, 40 m |
| LI-350 | 5 m cable (LI-350-BL-5) | 10 m, 25 m, 50 m, 75 m |
Measurement specifications
- Volumetric water content: range 0.0 to 1.0 m3 m-3; resolution 0.001 m3 m-3; typical accuracy ±0.03 m3 m-3 and maximum ±0.06 m3 m-3.
- Dielectric permittivity: range 1 (air) to 80 (water); resolution 0.002; accuracy ±1.0.
- Temperature: range -40 to 70 C; resolution 0.1 C; accuracy ±0.5 C from -40 to -20 C and ±0.3 C from -20 to 70 C.
- Bulk electrical conductivity: range 0 to 20000 uS cm-1; resolution 1 uS cm-1; accuracy ±5 % from 0 to 10000 uS cm-1 and ±8 % from 10000 to 20000 uS cm-1.
* For factory calibration soils. ** Specifications exclude errors from the Topp (1980) approximation. Specifications subject to change without notice.
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