ML3 ThetaProbe Soil Moisture Sensor
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The new ThetaProbe adds temperature measurement to its class‐leading soil moisture measurement capabilities The ML3 ThetaProbe makes it easy to take reliable, accurate soil moisture measurements. Simply insert the probe into the soil, connect your data logger or meter, provide 5‐14V DC at 18mA, and within seconds you can be measuring soil moisture. The ThetaProbe’s class‐leading ± 1% accuracy, stability and reliability have made it the preferred choice for thousands of researchers worldwide.  Soil moisture with ± 1% accuracy  New built‐in temp measurement  New extendable cable system  Improved performance in saline soils  Buriable – IP68 The new generation of ThetaProbe The addition of a thermistor sensor to the ML3 enables the simultaneous logging of soil temperature with soil moisture at depth. A new cabling system makes it simple to extend or replace cables, offering a choice of 1m, 5m, 10m and 25m extensions. ML3 cables and connectors are buriable and environmentally protected to IP68. Data Logging and readout The temperature range has also been improved with tests demonstrating that the ML3 can operate down to ‐40 degrees C (non‐flexing cables).

Soil Moisture and Temperature Sensor ThetaProbes are robust, buriable and maintenance-free. They can be inserted into augered holes or positioned in the wall of a trench (which is then carefully back-filled). Optional extension tubes assist placement and removal when burying at depth. [1] Figures apply to sensor only and exclude logger or cabling errors Applications • Soil Science • Forestry •Hydrology • Crop Trials ML3 ThetaKit Horticulture and Agriculture ML3 Theta Probes can be used in a wide range of soils, composts and other growing media. They can be inserted into plant pots, or...