Velleman DVM99 Uživatelský manuál stáhnout pdf (Strana 6)

DVM99

V. 03 – 22/08/2013 6 ©Velleman nv

Substance

Emissivity

Substance

Emissivity

Asphalt

0.90 to 0.98

Cloth (black)

0.98

Concrete

0.94

Human skin

0.98

Cement

0.96

Leather

0.95 to 1.00

Sand 0.90 Charcoal (powder) 0.96

Earth 0.92 to 0.96 Lacquer 0.80 to 0.95

Water

0.92 to 0.96

Lacquer (matt)

0.97

Ice

0.96 to 0.98

Rubber (black)

0.94

Snow

0.83

Plastic

0.85 to 0.95

Glass 0.90 to 0.95 Timber 0.90

Ceramic

0.90 to 0.94

Paper

0.70 to 0.94

Marble

0.94

Chromium oxides

0.81

Plaster

0.80 to 0.90

Copper oxides

0.78

Mortar

0.89 to 0.91

Iron oxides

0.78 to 0.82

Brick

0.93 to 0.96

Textiles

0.90

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.

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