F. MAINTENANCE
1.
Clean the surface of the instrument and optical lens with a damp cloth.
2.
Replace the 9 Volt battery when the low battery indicator appears on
the LCD.
G. TROUBLE SHOOTING
Symptom
Probable Cause
Temperature seems inaccurate.
• Dirty optical lens.
• Low battery.
• Instrument held too far away
from target increasing desired
target area.
• Target surface has poor
emissivity qualities.
• Laser sight out of alignment.
371/373 does not turn on.
• Dead or low battery.
• Defective POWER ON switch.
• Broken batter connector.
Laser does not turn on.
• Low battery.
• Broken connector to Laser.
Test Products International, Inc.
9615 SW Allen Blvd., Ste. 104
Beaverton, OR USA 97005
503-520-9197 • Fax: 503-520-1225
Test Products International, Ltd.
342 Bronte Road South, Unit 9
Milton, Ontario L9T5B7
Canada
905-693-8558 • Fax: 905-693-0888
L373M • 4/24/00 copyright © 2000 Test Products International, Inc.
Infrared Thermometers 375,376,377
from
Test Products International, Inc.
The Value Leader
TM
Visit www.tpi-thevalueleader.com
Common Emissivity Values
Material
Emissivity
Aluminum (oxidized)
0.25
Aluminum (polished)
0.1
Asbestos
0.95
Brass (oxidized)
0.6
Brass (polished)
0.1
Carbon
0.75
Carborundum
0.85
Cardboard
0.9
Cast Iron (polished)
0.2
Cast Iron (rusted)
0.95
Chromium (polished)
0.1
Concrete
0.7
Copper (oxidized)
0.8
Copper (polished)
0.05
Gold (polished)
0.1
Iron plate
0.7 to 0.85
Lead (oxidized)
0.3
Lead (pure)
0.1
Marble
0.9
Matte black paint
0.95
Nickel (pure)
0.1
Nickel plate (oxidized)
0.95
Paper
0.9
Plaster
0.9
Plastics
0.8 to 0.95
Quartz
0.9
Red Brick
0.75 to 0.9
Rubber (rough)
0.98
Rubber (smooth)
0.9
Silica
0.4
Silver (polished)
0.1
Stainless Steel (other)
0.2 to 0.6
Stainless Steel (polished)
0.1
Steel (ground sheet)
0.6
Steel (Mild)
0.3 to 0.5
Steel plate
0.9
Timber
0.8 to 0.9
Water
0.98
Zinc (oxidized)
0.1
