DMM600 Duff Moisture Meter
sample is placed in the sample chamber, the lid is attached, and the sample is
compressed to a density determined by precision springs. When proper density
is reached, an audible indicator sounds and the result is displayed on the
readout. Readings are displayed in real time. There is no memory for
measurement storage.
A standard calibration converts the output of the measurement circuit to
volumetric water content. Alternatively, a user-defined calibration can be
downloaded using PC software PCDMM which is supplied with the DMM600.
When user-defined calibrations are used, measurements derived from the
standard calibration and the user-defined calibration are alternately displayed
on the LCD.
PCDMM is software supplied with the DMM600 and provides an interface
using serial communications. PCDMM allows downloading and uploading of
calibration coefficients, checking battery voltage and resetting the DMM600.
The DMM600 comes with a 7.5 cm (3 inch) diameter sieve, and a case for easy
carrying and storage for small items including a spare battery, screwdriver and
pencil.
6. Specifications
Features:
•
Measures duff water content in the field
•
Compact and easy to carry
•
Simple to use
6.1 Physical
Dimensions:
8.9 cm (3.5 in) diameter, 25.4 cm (10 in) length
Weight:
1.7 kg (3.7 lb)
Sieve description:
#4, mesh = 0.187 in
6.2 Power
Power supply:
9 Vdc alkaline battery. Battery should be
replaced when voltage is
≤
7 volts. Battery
voltage is checked using PCDMM software
supplied with DMM600. The DMM600
automatically turns off after 5 minutes of
inactivity.
Current demand
between measurements:
approximately 3 mA
Sleep mode current:
140
µA
Measurement current:
85 mA for approximately 1 ms
Measurements per battery:
more than 2000
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