MSA Evolution 6000 Operating Manual page 12

4 Use
4.5.1 On-Screen Indicators (All Models)
Figure 6 On-Screen indicators
1 Shutter indicator
2 Low sensitivity mode indicator
3 Internal over temperature indicator
4.5.2 High and Low Sensitivity Mode
The camera has a high and a low sensitivity mode for showing images in different temperature ranges.
• After turning the camera ON it will be in the high sensitivity mode.
• The camera automatically switches from high sensitivity mode to low sensitivity mode in case of extreme heat (a
significant portion, 32% of pixels) of the image exceeding 140°C.
In this case, the display shows a small green triangle above the color reference bar to indicate that the scale changed from
the high sensitivity mode scale. A larger green triangle appears in the upper left-hand corner of the display.
• The camera switches from low sensitivity mode to high sensitivity mode when 89% of pixels show less than 120°C.
In the low sensitivity mode, the camera's dynamic range expands to enable the user to distinguish objects and people more
easily in environments with large temperature ranges. This mode also prevents white-out. (White-out or over-saturation occurs
when a thermal imaging detector is subjected to too much thermal energy, and the image, which appears as a white cloud, no
longer identifies fine details in the scene.)
4.5.3 Shutter Indicator
When the camera is in operation, it is periodically necessary to refresh the focal plane array in order to operate properly. This
occurs via an internal shutter mechanism. When the camera shutters, the camera image freezes for approximately one
second.
The shutter indicator is a green square shown at the top left of the display for approximately 3 seconds before and during the
shuttering cycle (Pos. 1, Figure 6
Shuttering may occur more frequently with greater heat load.
4 Color reference bar
5 Digital temperature target
6 Record icon
).
Evolution 6000 Thermal Imaging Camera
US
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