HT HN000100, User Manual

Page: 38 / 52

THT100 - THT200 - THT300
EN - 37
5.4 ADJUSTING THE IMAGE TEMPERATURE
The instrument allows adjusting the temperature associated with the framed image on the
display (levels high, low and span) as follows:

Automatic (AUTO) mode

the minimum and maximum temperature levels of the
framed object on the display and associated with the color palette are automatically
defined by the instrument and dynamically vary when moving it. This (default) option,
which can be used in most cases, allows for an optimum display of the IR image. The
relationship between temperature and color of the palette is linear .

Histogram (HG) mode

the minimum and maximum temperature levels of the object
framed on the display are always defined automatically by the instrument, as in the
Auto mode, but in this case, the areas of the image in which temperature values are
very different from the values of adjacent areas are highlighted. The relationship
between temperature and color of the palette is
non-linear
according to a histogram
algorithm. This mode emphasizes image display in very dark working environments.

Manual (MANUAL/LOCK) mode

the minimum and maximum temperature level of
the framed target on the display are manually set by the user. This mode, particularly
useful to clearly identify only some areas of the image, is recommended in case of
advanced thermographic operations.
1. Press key or touch the icon “AUTO” found at the bottom on the right side of the
display. The screens in Fig. 42 show the selection of modes “AUTO” and “HG”.
Fig. 42: Setting the Automatic and Histogram modes
2. Press key or touch the icon “AUTO” by selecting the “MANUAL” option. The
following screens are shown on the display:
Fig. 43: Setting the Manual mode
3. Use the arrow keys

or

to set the temperature values associated with the high and
low levels by steps of 0.1°C at the same time (see Fig. 43 – left side).