FLIR G Series User Manual

Quantification
9
9.3.1 Main steps
The quantification measurement includes the following main steps:
• Select a measurement position.
• Place the camera.
• Ensure minimum delta temperature.
• Set the quantification parameters.
• Start the measurement.
9.3.2 Select a measurement position
Observe the leak from several positions to find a viewing angle that gives the camera the
best measurement position. Fore more information, see section 9.4.1 Measurement
position.
9.3.3 Place the camera
1. Set up the tripod at the viewing location you have chosen.
2. Choose the height and location of the tripod to optimize the background as described
in section 9.4.1 Measurement position.
3. Position the camera so the identified leak location is centered in the camera’s Field of
View (FOV).
4. Aim the camera so that the gas leak is inside the circle on the screen. Make sure that
all gas flows out of the circle. See also section 9.4.5 Field of view and focus.
5. Adjust the camera focus so that both the plume and the background are in focus. If
this is not possible, priority should be given to the plume. See also section 9.4.5 Field
of view and focus.
6. Make sure the camera is operating in the proper temperature range. See also section
9.4.4 Camera temperature range.
9.3.4 Enter Quantification mode
To enter the Quantification mode, select Quantification on the Mode selection menu.
9.3.5 Set the quantification parameters
Before each measurement it is important to check and set the quantification parameters
according to the current conditions.
9.3.5.1 Measure parameters
Measure the ambient temperature every time a quantification measurement is performed.
For more information, see section 9.4.2 Measure Ambient Temperature.
9.3.5.2 Enter parameters
For accurate quantification results, it is important to set the quantification parameters ac-
cording to the current conditions. For more information, see section 9.2.1 Quantification
parameters.
To enter the quantification parameters, do the following:
1. On the main toolbar, select Parameters. This displays a toolbar.
2. On the toolbar, select a parameter. This displays a dialog box, where you can change
the parameter value.
3. To close the dialog box, push the Back button.
9.3.6 Ensure minimum delta temperature
The background should be at least 2°C (3.6°F) warmer (or colder) than the ambient tem-
perature to provide sufficient contrast for quantification. For more information, see sec-
tion 9.4.3 Assessing delta temperature.
Use the Delta T feature to show areas where there is insufficient delta temperature for
quantification.
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FLIR G Series Specifications

General

Brand	FLIR
Model	G Series
Category	Thermal cameras
Language	English