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LM-12 Inst Man Short Form-AB.doc 12/22/06
LEAN-MEATER
®
INSTRUCTIONS FOR USING THE SERIES 12
(S/N: 45000)
The Renco Lean-Meater uses pulsed ultrasound to measure total backfat depth of mammals
having 1, 2, or 3 backfat layers. Total measurement range and accuracy including skin is 4-
35mm,
±
1 digit. Power is provided by a Nickel Metal Hydride (NMH) rechargeable battery.
The number of backfat layers is automatically determined and displayed. The instrument is not
waterproof, do not submerge. To assemble, connect the probe to the cable and the cable to the
instrument. Twist both connector barrels until they snap into locked position.
Turn On Sequence
Press and hold the push button to turn on the instrument. The display will show the number “88”
for a second, verifying that all segments are functional. The 3 READ lights on the left side of
the display will turn on briefly. After a moment, the right-most digit will show “0” and the rest
of the display will be dark.
Using the Lean-Meater
Apply a generous amount of coupling fluid, such as cooking oil or water to the test site.
Insufficient coupling fluid is the most common source of error as
ultrasound cannot pass
through air or air bubbles
. Press the Power button. Apply the probe to the site, use a gentle
pressing/rotating action to force out any air bubbles between the skin and probe. It is important
that the probe be kept perpendicular to the back. Errors may result if probe is at an angle. Many
have found that the probe is most easily managed if held between the index and middle fingers.
The illustration above shows 3 READ light indicators on the left. The TOP light indicates 1
layer, TOP and MIDDLE lights, 2 Layers, all 3 lights, 3 Layers. (The illustration shows 2
layers.) The skin thickness is included in all cases unless it is
>3mm, in which case it will be
counted as 1 layer
. The skin of most mammals does not exceed 3mm.
The
READ
indicators light when the appropriate number of layers have been found. If Read
light(s) do not come on, then skin contact is poor; use more oil, make a greater effort to remove
air bubbles, be sure probe is perpendicular to the back.
Consistency of probe placement is of
great importance
in obtaining comparative measurements.
1 2
Á
Á
2
2
1 LAYER
2 LAYERS
3 LAYERS
LIGHTS WHEN BATTERY
CHARGER IS PROPERLY
CONNECTED
DISPLAY EXAMPLE SHOWS 2 LAYERS & 12mm OF BACKFAT
INCLUDING
SKIN
READ LIGHTS