Milwaukee M12 TD, User Manual

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12
English 12
FORMAT Select the Time and Date formats
LANGUAGE Select the display language
DELETE ALL Delete all images on the SDHC card
FACTORY RESET Return Thermal Imager to original factory
settings
SYSTEM INFO Display system information
SELECTING THE EMISSIVITY
Select the material or emissivity level in Settings.
1. Press the Settings
button.
2. Use the arrow
▲▼
buttons to select EMISSIVITY.
3. Press OK.
4. Emissivity can be set by ratio or material. Use the arrow
◄►
buttons to select the ratio column or the material column. Then,
use the arrow
▲▼
buttons to select the desired ratio or material.
5. Press OK.
This setting tells the Thermal Imager what surface material it is
measuring. This is important, because setting the right emissivity has
a significant effect on the accuracy of temperature readings.
See the following table for a list of the materials in the Thermal Imager
Emissivity menu, and their corresponding emissivity ratios.
ALUMINUM 0.30
ASPHALT 0.95
BRICK 0.83
CONCRETE 0.95
COPPER 0.60
IRON 0.70
OIL (PETROLEUM) 0.94
PAINT 0.93
RUBBER 0.95
SAND 0.90
SOIL 0.92
STEEL 0.80
WATER 0.93
WOOD 0.94
Emissivity is the ratio of a target surface’s infrared output (radiance)
to that of a blackbody at the same temperature. A blackbody is a
theoretical perfect radiator of infrared radiation (IR).
What this means is you can set the sensitivity of the Thermal Imager
to determine the true temperature of an object, no matter what its IR
radiation characteristics are. The poorest radiators (surfaces with the
lowest emissivity ratios) need the most correction. These materials
are things like shiny metal and glass.
When you have a low-emissivity surface that you need a very
accurate temperature reading from, placing black electrical tape or
even painting it with flat-black paint is very effective. Black electrical
tape and flat-black painted surfaces have an emissivity ratio of 0.95.
WARNING
To minimize the risk of electric shock, burn or fire, never apply
electrical tape or paint to an electrically live surface. Always check
to ensure the power has been turned off before touching a surface.
OPTIMIZING THERMAL IMAGES
Use the emissivity settings, palette selection, and HOT/COLD
indicators to optimize your thermal images to your needs.
SELECTING THE COLOR PALETTE
Select one of three color palettes to suit your needs.
Turn the tool on, then use the arrow
◄►
buttons to step through the
palettes.
RAINBOW Shows a very wide range of
temperatures
IRON-BOW Useful for revealing small temperature
differences
HIGH CONTRAST Shows the most detail
HOT/COLD INDICATOR MARKS
To turn the HOT/COLD Indicator marks on or off while taking a
temperature measurement, press the OK button during live view.
Red (hot) and blue (cold) target marks locate the highest and lowest
temperatures in the display area.
TAKING A TEMPERATURE MEASUREMENT
1. Insert a battery pack and turn on the tool.
2. Point the tool at the target. The Target Temperature is displayed
at the top of the screen.
3. To activate the laser guides, pull the trigger softly (less than half-
way). See “83:1 Distance to Spot Ratio”.
4. Turn the HOT/COLD indicator marks on or off, or toggle through
the different palettes to get the desired image on the display.
5. The center temperature is affected by the material of the target,
and can be adjusted by changing the Emissivity. See “Selecting
the Emissivity”.
USING THE LASER INDICATORS
Use the lasers to frame up the target area. The lasers correlate to
the temperature crosshair on the display. Lasers are accurate to 76
mm @ 1,30 m. The target temperature is taken in between the laser
indicators, and sized according to the following chart.
83 mm
415 mm
ø 1 mm ø 5 mm
NOTE: A quick change in temperature (>12°C) can affect the meter’s