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4
Operating Instructions
This instrument is a conductivity moisture meter specifically designed for
the timber industry. This instrument has eight calibration scales enabling
the user to take accurate moisture measurements in 150 wood species.
Moisture measurements can be taken using the integral pin electrodes
or by using the heavy-duty moisture probe. When used with the tem-
perature probe the moisture measurements are automatically corrected
with respect to the ambient temperature. This instrument is switched ON
by pressing the button and switched OFF by pressing the button
for approx 3 seconds. The default auto power-off for this instrument is 5
minutes but can be set manually (see auto power-off set-up).
Taking a Measurement
Remove the cap to expose the needle electrodes or connect the heavy-
duty moisture probe on the right hand side of this instrument and switch
the instrument on by pressing the button. Select the appropriate wood
calibration scale (A, B, C, E, F, G, H or J) by referring to the enclosed
wood calibration table (see calibration table for wood and common
timber species) and by pressing the button. Push the needle pins or the
heavy-duty moisture probe pins into the wood and observe the reading in
the LCD display.
Measuring Without Temperature Probe
This instrument is calibrated for wood at 20°C (68°F). In general, timber
that is hotter than 20°C will give higher readings and timber colder than
20°C will give lower readings. An approximate manual correction of 0.5%
moisture content per 5°C may be subtracted from timber that is above
20°C. For timber that is below 20°C, a manual correction of 0.5% mois-
ture content per 5°C may be added to the measured value.
Automatically Temperature Corrected (ATC)
Switch the instrument ON and select the appropriate wood calibration
scale as detailed in ‘Taking a Measurement’. Using a hammer and nail of
nominal 3mm diameter, make a hole in the wood to be tested. Remove
the nail and push the temperature probe into the hole until the tip is at the
required depth.
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