③
Steam, dust, smoke, etc., Can prevent accurate measurement
by obstructing the unit’s optics.
z
Emissivity
Emissivity is a term used to describe the energy-emitting
characteristics of materials.
Most (90% of typical applications) organic materials and
painted or oxidized surfaces have an emissivity of 0.95
(pre-set in the unit). Inaccurate readings will result from
measuring shiny or polished metal surfaces. To compensate,
cove the surface to be measured with masking tape or flat
black paint. Allow time for the tape to reach the same
temperature as the material underneath it. Measure the
temperature of the tape or painted surface.
Emissivity Values
Substance Thermal
emissivity
Substance Thermal
emissivity
Asphalt
0.90 to 0.98
Cloth (black)
0.98
Concrete
0.94
Human skin
0.98
Cement
0.96
Lather
0.75 to 0.80
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
11
Содержание DT-8862
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Страница 2: ...English Non Contact Infrared Thermometers Operating Manual 3p 2...
Страница 13: ...Finnish Non Contact infrapuna l mp mittari K ytt ohje...
Страница 21: ...Swedish Ber ringsfri Infrar d Termometer Anv ndarhandbok 3p...
Страница 31: ...Norwegian Infrar d lasertermometer Bruksanvisning Manual 3p...
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Страница 53: ...Polish Pirometry Radiacyjne Instrukcja Obs ugi 3p...
Страница 65: ...Latvian Bezkontakta Infrasarkanais Termometrs Lieto anas Instrukcija 3p...
Страница 77: ...Lithuanian Nekontaktiniai Infraraudon j Spinduli Termometrai Vartotojo vadovas 3p...
Страница 88: ...Russian 3p...
Страница 89: ...z z z z z z z 0 10 1 0 z z z 0 1 0 1 z z 89...
Страница 90: ...z z z z D S 914 36 90 90...
Страница 92: ...1mW 630 670 2 0 50 32 122 10 60 14 140 10 90 RH 80 RH 9 NEDA 1604A IEC 6LR61 CE EMC z 2 3 92...
Страница 93: ...4 EMS HAL LAL EMS HAL LAL 1 C F 2 3 4 MODE 93...
Страница 94: ...MODE EMS EMS EMS 0 10 1 0 94...
Страница 95: ...50 650 58 1202 C F C F Max HOLD HOLD 95...
Страница 96: ...30 5 9 6 z 96...
Страница 97: ...z z D S 1 z z 97...
Страница 98: ...z 90 0 95 0 90 0 98 0 98 0 94 0 98 0 96 0 75 0 80 0 90 0 96 0 92 0 96 0 80 0 95 98...
Страница 100: ...100 100...