OEG Dual Laser Infrared Thermometer
GB
12
11 General data
• Display
backlit LC display with function indicators
• Response time
150 ms
• Over-range indication
“------“
• Operating temperature
0°C to 50°C (32°F to 122°F)
• Operating humidity
10% to 90%RH operating, >80% RH storage
• Storage temperature
-10 to 60°C (14 to 140°F)
• Energy supply
9 V battery
• Automatic power off
7 seconds, with LOCK to disable
• Weight
150 g
• Dimensions (HxWxD)
180 x 107 x 40 mm
10 Technical data
Type
HT-818
Range
-50 bis +850 °C
-58 bis +1562 °F
Resolution
0.1 <1,000°, 1° > 1,000°
Emissivity
0.10 to 1.00 adjustable
Field of view
D/S = approx. 12:1 ratio
(D=distance; S= spot or target)
Laser pointer
Dual, Class 2 laser > 1mW;
wavelength is 630 to 670 nm
IR spectral response
8 to 14 μm (wavelength)
Repeatability
+/- 0.5% of reading or +/- 1°C (1.8°F),
whichever is greater.
9 Emissivity values of frequently used materials
Material
Emissivity
Asphalt
0.90 - 0.98
Concrete
0.94
Cement
0.96
Sand
0.90
Soil
0.92 - 0.96
Water
0.92 - 0.96
Ice
0.96 - 0.98
Snow
0.83
Glass
0.90 - 0.95
Ceramic
0.90 - 0.94
Material
Emissivity
Marble
0.94
Plaster
0.80 - 0.90
Mortar
0.89 - 0.91
Brick
0.93 - 0.96
Cloth (black)
0.98
Skin (human)
0.96
Leather
0.75 - 0.80
Charcoal (powder) 0.96
Lacquer
0.80 - 0.95
Lacquer (matt)
0.97
Material
Emissivity
Rubber (black)
0.94
Plastic
0.85 - 0.95
Timber
0.90
Paper
0.70 - 0.94
Chromium Oxides 0.81
Copper Oxides
0.78
Iron Oxides
0.78 - 0.82
Textiles
0.90
