General Tools and Instruments MMD950 User Manual
Page 9

Some measurement tips:
1. The spherical sensor’s accuracy is not affected by its angle relative to
the target surface. Press the sphere against the material at the angle
that makes the LCD easiest to read.
2. Never use force to drive the test pins into a hard surface.
3. Measurements of wood are skewed by two variables: ambient humidity
and the density of the wood species. The best way to compensate for
the effect of these variables is to develop your own moisture level
curves, based on your experience working with different species of
wood on a day-to-day basis.
To scan a material for an area of peak wetness in either measurement
mode (%WME or REL), first make sure that the beeper is enabled (indicated by
the
icon on the top line of the LCD). If the icon is present, scan the
material while paying attention to the beeper’s frequency. The faster the beeper
beeps, the wetter an area is. Near the high end of the meter’s measurement
range, the beeping sounds almost constant.
If the beeper has been disabled, to re-enable it you must power off the meter
and then change the beeper’s default setting using the Advanced Setup
instructions in the next section.
To hold a measurement, press the
button briefly. The display will “freeze”
with the held value, along with a
(lock) icon at upper right. To unlock the
display, press the
button briefly again.
ADVANCED SETUP INSTRUCTIONS
In Setup mode, you can change the default settings for the meter’s beeper and
backlight and the auto power off and calibration functions.
To enter Setup mode, power off the meter by pressing the
button and
holding it for at least three seconds. Then power the meter back on in a special
way by simultaneously pressing the
and Mode buttons and holding them for
at least three seconds. Doing this will cause the beeper to sound, the backlight
to come on and the word SEtUP to scroll across the LCD.
After a few seconds, the LCD will read out 0 = 0. In this format, the left digit is
the Option No. and the right digit is the current setting for that option. For
example, 0 = 0 is shorthand for Option 0, Setting 0.
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