Velleman DVM99 Gebruikershandleiding Seite 6

Substance
Asphalt
Concrete
Cement
Sand
Earth
Water
Ice
Snow
Glass
Ceramic
Marble
Plaster
Mortar
Brick
8. Maintenance
• The sensor lens is the most delicate part of the thermometer and
should be kept clean at all times.
• To do this, only use a soft cloth or cotton bud with a little water or
medical alcohol.
• Allow the lens to fully dry before using the thermometer.
• Wipe the other parts of the thermometer regularly with a moist, lint-
free cloth. Do not use alcohol or solvents.
• Do not submerge the thermometer in water or any other
liquid.
• There are no user-serviceable parts.
• Contact your dealer for spare parts if necessary.
9. Batteries
• Make sure the thermometer is off.
• Open the battery cover at the back of the thermometer. Unscrew the
screw and lift the cover.
• Insert 2 new CR2032 batteries ('+' up)
• Place the cover back and tighten the screw.
WARNING: do not puncture or throw batteries in fire.
Dispose of batteries in accordance with local regulations.
Keep batteries away from children.
03/04/2009
Emissivity
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
DVM99
Substance
Cloth (black)
Human skin
Leather
Charcoal
(powder)
Lacquer
Lacquer (matt)
Rubber (black)
Plastic
Timber
Paper
Chromium
oxides
Copper oxides
Iron oxides
Textiles
6
Emissivity
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
©2008 Velleman Components nv
®