Emissivity; Specification - Amprobe IR-450 Manual De Uso

3. Not recommended for use in measuring shiny or
polished metal surfaces (stainless steel, aluminum,
etc.). See Emissivity.
4. Steam, dust, smoke, etc., can prevent accurate
measurement by obstructing the unit's optics

Emissivity

Most 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, cover 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.

SPECIFICATION

Temperature
Range
Accuracy at
23°C ±2°C
<80﹪RH
Best display
Resolution
Response
Time
Wavelength
Spectral
Response
Emissivity
D:S
-30°C to 500°C (-22°F to 932°F)
-30°C to 0°C (-22°F to 32°F): ±2°C (±4°F)
1°C to 10°C (34°F to 50°F): ±1.5°C (±3°F)
11°C to 40°C (52°F to 104°F): ±1°C (±2°F)
41°C to 500°C (106°F to 932°F): ±1.5°C
(±3°F) or ±1.5% of reading, whichever
is greater.
0.5°F / 0.2°C
0.5 s
630nm to 670nm
6.5µm to 18µm
E=0.95
8:1(calculated at 80% energy)
7