HT instruments HT3320 - Manual (Page 14)

HT3320
EN - 13
6. SETTING MEASURING FUNCTIONS
In each measuring mode (see § 7), by pressing the ENTER key, the instrument shows the
following screen:
MEASURE SET MEASURE SET
Emissivity Dewpoint / Wetbulb
Alarm High Type K
Alarm Low
Laser
Auto Mode
Max/Min
Average/Diff
Ambient Temp. / %RH
Fig. 14: Measurement setting menu
Use the arrow keys
S or T to select the items and confirm with ENTER to access the
relevant programming sections.
6.1. EMISSIVITY
SETTING
The radiating power or emissivity “
ε
” is a value between 0 and 1 which indicates the
capacity of an object to emit energy in the infrared frequency range. This parameter
depends both on the material the object is made of and on the finishing (painting).
Parameter “
ε
” is set by default to 0.95 because, in practice, it has been established that
approx. 90% of the objects have such a radiating power.
1. Select the first item (
ε = x.xx) and press the ENTER key to set emissivity (see Fig. 15
and Table 3). Use the arrow keys
S or T to set the value and then the ENTER key to
confirm
2. Use the arrow keys
S or T to select one of the common materials listed below, among
the options: Concrete, Glass, Human skin, Ice/Water, Plastic, Wood
3. Press the ESC key to save and exit the function
Fig. 15: Emissivity setting menu