Velleman DVM105 Notice D'emploi page 5

The infrared thermometer is supplied with a default emissivity of
•
0.95. The emissivity of the thermometer can be changed from 0.05
(5E) to 1 (100E). Changes should only be carried out by
experienced personnel. To change the emissivity, turn the
instrument on by pressing the
!"( button (4) five times for emissivity function. The current
setting is shown on the LCD screen. Press the
adjust the emissivity value, press the
the set up screen. For information relating to the emissivity of
specific materials, please contact the nearest retailer.
! (1 non<contact infrared thermometers are not recommended for
measuring the temperature of shiny or polished metals. See table
below for a short overview of emissivity values.
#2* & $(
Asphalt
Concrete
Cement
Sand
Earth
Water
Ice
Snow
Glass
Ceramic
Marble
Plaster
Mortar
Brick
!#2+(*,!! % 5
1.6.
00 (30/06/2008)
3%**%4% )
0.90 to 0.98
0.94
0.96
0.90
0.92 to 0.96
0.92 to 0.96
0.96 to 0.98
0.83
0.90 to 0.95
0.90 to 0.94
0.94
0.80 to 0.90
0.89 to 0.91
0.93 to 0.96
'Hi' or 'Lo' is displayed when the temperature being
measured is outside of the range of the instrument, 'Hi'
when higher than +220°C (428°F) and 'Lo' when lower
than –33°C (<27°F).
(&*. Button (3), then press the
!"( button (4) again to exit
#2* & $(
Cloth (black)
Human skin
Leather
Charcoal (powder)
Lacquer
Lacquer (matt)
Rubber (black)
Plastic
Timber
Paper
Chromium oxides
Copper oxides
Iron oxides
Textiles
5
(&*. Button (3) to
3%**%4% )
0.98
0.98
0.95 to 1.00
0.96
0.80 to 0.95
0.97
0.94
0.85 to 0.95
0.90
0.70 to 0.94
0.81
0.78
0.78 to 0.82
0.90