A microwave meter for rapid determination of moisture
content in different types of soils.

The James Aquaprobe represents a break-through in modern moisture measurement technology. By utilizing the latest microwave and microprocessor technology, the Aquaprobe can determine the
moisture content of different types of soils and other fine aggregate.
Simply insert the instrument in the container and fill the container with a sample of soil to be measured. After shake the container a few
times, the instrument will instantaneously display the percentage
of moisture content on the easy to read display.

The Aquaprobe Microwave Soil moisture meter uses a five prong
sensor to measure the complex dielectric constant of the material
encompassed by the outer four prongs. As the dielectric constant of
water is four to eight times greater than most natural soil types, changes in water content directly effect the sensor output. An average of five to ten readings is normally taken in order to ensure a valid reading. This output is then converted by the integrated microprocessor and moisture content is displayed directly as a percentage of dry weight.

The unit comes calibrated for Lean Clay, Silt, Sand (Ottawa Sand and SP sand) and general type of Siltysand soil. It can also be programmed with up to ten different materials by the user. For highest accuracy, the unit should be programmed for the material being tested. Simple to use WIN95/WIN XP software is provided for calibrating the unit to the various materials.

Finally, the Aquaprobe can store over 150 readings. Storage is complete with the time and date for future reference. Data can be recalled via RS-232 interface to a personal computer running WIN95/WINXP.