James Instruments T-S-30 - Aquaprobe Soil Moisture Meter
Features
• Fast and easy to use: Simply fill the container with your soil
sample, shake it and it is ready.
• Accurate.
• Completely portable.
• Easy to read display.
• Instantaneous readings.
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
shaking 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 Silty sand 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.
*Accuracies can achieve +/- 0.2% with user calibrated mode for
soils. Accuracies will vary with particle size and material type,
organic material will also affect the accuracy.
Note: Maximum aggregate particle size is approximately 12.5 mm in
diameter.
Specifications
Moisture Range: 0 - 15% by Dry Weight.
Frequency: 50 Mhz.
Power: 2 AA Batteries.
Display: 4 x 16 Char. Trans - reflective.
Data Link: RS - 232.
Weight: 4 lbs. (1.8 kg).
Click here for T-S-30 Data Sheet 
