8
3. Minimum reading
13. Hi alarm
4. Low battery indicator
14. Memory and Read address number
5. Maximum/minimum value 15. Read memory data
6. Emissivity value setting
16. Memory clear indication
7. Measured value
17. Memory full indication
8. Measure indication
18. Store data to memory
9. Laser enabled indicator
19. Units “
o
C ,
o
F
”
10. SET symbol
Ⅵ
. Emissivity Adjustment
1. Emissivity:
Emissivity is a value between 0.17 and 1 which
indicates an object’s ability to emit infrared energy. Emissivity
is determined primarily by the objects’ composition and surface
finish.
The thermometers’ sensitivity to emissivity “
ε
” is preset at
0.95, because this setting will be applicable to 90% of
surfaces, but can be adjusted as required.
2. Emissivity adjustment
c
Apply black tape, matt-black paint or black magic marker to
the object if it is safe to do so.
d
“
ε
” is set at 0.95 to indicate correctly from a dark surface.
e
Aim the sensor at the black surface, pull the trigger and
note the reading as T1.
f
Remove the black tape or matt-black paint and aim the
sensor at the same area again. Pull the trigger and note the
reading as (T2).
g
Change the emissivity value “
ε
” until T2 and T1 are equal
as follows:
a). Enter setting mode (refer to
MODE
button above).
b). Press
MODE
button to select the
ε
value setting.
c). Press
▲
or
▼
buttons to set desired value.
