ML3 - ThetaProbe Soil Moisture Sensor

Class leading ± 1% soil moisture accuracy
New built-in temperature measurement (only when buried)
New extendable cable system
New white body - reduces radiative heating
Improved calibration for soil salinity
Ideal for phenotyping based research
The new ML3 ThetaProbe has extra features, improved performance and a new look. With its 1% accuracy the ThetaProbe continues to set the standard for soil moisture measurement but now also measures soil temperature.Soil moisture sensor for soil moisture measurement
Highy accurate yet easy to use
With the ML3 ThetaProbe Soil Moisture Sensor it's easy to make reliable, accurate soil moisture measurements. Simply insert the soil moisture probe into the soil, connect to your data logger or readout unit, provide 5-15V DC at 20mA, and within seconds you can be logging soil moisture.
The ML3 ThetaProbe is robust, buriable and maintenance free (environmentally protected to IP68) . It can be easily installed at depth into augered holes using the optional extension tubes.
ML3 improvements
The addition of a thermistor sensor enables the simultaneous logging of soil temperature with soil moisture. A new cabling system makes it simple to extend or replace cables. With a choice of 1m, 5m, 10m and 25m extensions, flexible configurations are now possible.
The ML3's salinity response has also been improved - its output has been characterised at EC values up to 2000 mS.m-1. The temperature range has also been improved - allowing operation at temperatures as low as -40 degrees C (non-flexing cables).