Delta-T ML3: ThetaProbe Soil Moisture & Temperature Sensor

Description

The ML3 ThetaProbe measures soil moisture and temperature with class-leading accuracy
• Soil moisture with ± 1% accuracy
• Built-in temperature measurement
• Simple data logger or meter connection
• Extendable cable system
• Buriable – IP68

Exceptional performance:

The ML3 ThetaProbe’s class leading ± 1% accuracy, stability, build quality, and reliability have made it the preferred choice of thousands of researchers worldwide.
The ML3 is easy to use. Simply insert the probe into the soil, connect to your data logger or meter, provide 5-14 V DC at 18 mA and within seconds you can be accurately measuring soil moisture.
A built-in thermistor enables the ML3 to simultaneously measure soil temperature and soil moisture at depth (probe must be fully b uried). ML3 cables and connectors are extendable, buriable and environmentally protected to IP68.
The salinity response of the ML3 has been characterised at EC values up to 2000 mS.m-1. It also has a wide operating temperature range, with tests demonstrating that the ML3 can operate down to -40°C (non-flexing cables).

Installation:
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.

Data logging and readout:
The ML3 can be logged by any Delta-T data logger, and many loggers from other manufacturers.
For portable applications the ML3 connects to the HH2 Moisture Meter – and these can be ordered together in convenient form as the ThetaKit (NB: the HH2 does not provide temperature indication from the ML3).

Applications:
• Environmental research
• Sports turf and golf