Description
The 5TM is designed to measure the volumetric water content and temperature of soil and growing media. Using an oscillator running at 70 MHz, it measures the dielectric permittivity of soil to determine the volumetric water content. A thermistor in thermal contact with the sensor prongs provides the soil temperature.
Feature
- Temperature Integrated with Soil Moisture
- Engineered for Accuracy
- Easy Installation
- Plug and Read
Spesification
|
Apparent Dielectric Permittivity (εa): ± 1 εa from 1 – 40 (soil range); ± 15% from 40 – 80 |
| Soil Volumetric Water Content (VWC): | |
| Using Topp equation: ± 0.03 m3/m3 (± 3% VWC) typical in mineral soils that have solution electircal conductivity < 10 dS/m | |
| Using medium specific calibration, ± 0.02 m3/m3 (± 2% VWC) in any porous medium | |
| Temperature: ± 1°C | |
|
εa: 0.1 εa from 1-20, < 0.75 εa from 20-80 |
| VWC: 0.0008 m3/m3 (0.08% VWC) from 0 to 50% VWC | |
| Temperature: 0.1°C | |
|
εa: 1 (air) to 80 (water) |
| Temperature: -40 – 50°C | |
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10 cm x 3.2 cm x 0.7cm |
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5 m standard, custom cable lengths available upon request |
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150 ms (milliseconds) |
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3.6 – 15 VDC, 0.3 mA quiescent, 10 mA during 150 ms measurement |
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RS232 or SDI-12 |
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3.5mm “stereo” plug, or stripped and tinned lead wires (3) |
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Decagon: Em50 series loggers, ProCheck Campbell Scientific: Any logger with serial I/O (CR10X, CR850, CR1000, CR3000, etc.) Other: Any data acquisition system capable of 3.6-15V excitation and serial or SDI-12 communication |
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One year, parts and labor |
