FLIR GF7 Series, Руководство пользователя

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Detecting a gas leak 10
Note For large lenses that cover the laser transmitter and receiver, the laser functional-
ity is disabled. This means that continuous autofocus is not available.
10.4 Enhancing the image using High
Sensitivity Mode (HSM)
10.4.1 General
High Sensitivity Mode (HSM) is an adjustment method specifically designed for gas de-
tection applications. By enhancing the thermal sensitivity of the camera, HSM can im-
prove the detection of gas leaks, especially when they are small or low in concentration.
One feature of HSM mode is to make motion, such as moving gas, more visible in the im-
age. This is achieved by an image-subtraction video-processing technique. This HSM
feature subtracts a percentage of individual pixel signals from frames in the video stream
from subsequent frames, thus enhancing the differences between frames, which makes
a moving gas cloud stand out more clearly in the resulting images.
Note HSM mode is available when the camera is set to the Gas detection mode. Select
( Settings ) > Application options > Gas camera mode > Gas detection .
10.4.2 Procedure
To enable High Sensitivity Mode (HSM), do the following:
1. Push the navigation pad to display the menu system.
2. Select ( Image mode ) and push the navigation pad. This displays a submenu.
3. Select ( HSM ) and push the navigation pad.
10.5 Adjusting the temperature scale
By default, the camera continuously adjusts the image for the best image presentation.
Use this automatic mode first, but do not hesitate to adjust the temperature scale of the
infrared image manually. For more information, see section 12
Infrared image adjustment ,
page 34.
Note Adjustment of the temperature scale is not possible in HSM mode.
To adjust the temperature scale, do the following:
1. Touch the soft button to enter manual image adjustment mode.
2. Do one or more of the following:
• To simultaneously change the temperature scale minimum and maximum limits,
place your finger on the screen and move it up/down.
• To change the minimum limit or the maximum limit, do the following:
1. Touch the maximum or minimum temperature that you want to change.
2. Place your finger on the screen and move it up/down to change the value of
the highlighted temperature.
• To enhance the details for a certain point of interest in the image, touch the point
on the screen. The image will be auto-adjusted based on the thermal content of
the area around the touched point.
3. To prevent further unintentional adjustments, you can lock the touch screen.
• To lock the screen, touch the icon.
• To unlock the screen, touch the icon.
#T810411; r. AC/70277/70566; en-US 28