Fluke 574 - Manual (Page 15)

15
574
Emissivity - Table and Unknown Value
To adjust the unit’ TT s
emissivity value for a
material with unknown
emissivity, plug in the
probe.
Pull the unit’s trigger.
Place the measuring
tip of the probe on the
area to be measured.
Wait for the reading to
stabilize.
P
7
5
C
D
Note the indicated probe temperature reading.
Release the trigger. Pull the trigger again. Measure
the same area using infrared measurement. Press
the emissivity button (P). Use the Up and Down keys
(C) to select the material name “Free” which will be
shown in the display (7). Press the emissivity button
(P) again until the emissivity sign (5) flashes. Use
the arrow keys (C) to change the emissivity value
until the temperature matches the probe’s reading.
UNKNOWN VALUE
To choose the emissivity
of a material, press
EMISS (P). The display
shows a material name
(7), an emissivity value,
and the calculated
temperature value (5). To
choose another material,
use the Up and Down
keys (C). Press ENTER
(D) to activate this setting.
TABLE OF VALUES T T