FLIR T420-NIST User Manual page 72

19 – Working with measurement tools and isotherms
Setting up a
Follow this procedure to set up an isotherm color that is displayed when the camera
humidity isotherm
detects an area where there may be a risk of humidity in a building structure:
Setting up an
Follow this procedure to set up an isotherm color that is displayed when the camera
insulation detects what may be an insulation deficiency in a wall:
isotherm
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1 Push the Menu/Back button.
2
On the main menu, go to the Tools button
3
On the Tools menu, select Add isotherm
4 Select Humidity.
5 Use the joystick to set the following parameters:
Rel. humidity limit: The critical limit of relative humidity that you want to
■
detect in a building structure. For example, mold will grow in areas where
the relative humidity is less than 100%, and you may want to find such
areas.
Rel. hum.: The current relative humidity at the inspection site.
■
Atm. temp.: The current atmospheric temperature at the inspection site.
■
1 Push the Menu/Back button.
2
On the main menu, go to the Tools button
3
On the Tools menu, select Add isotherm
4 Select Insulation.
5 Use the joystick to set the following parameters:
Inside temp.: The temperature inside the building you are inspecting.
■
Outside temp.: The temperature outside the building you are inspecting.
■
Thermal index: The accepted energy loss through the wall. Different
■
building codes recommend different values, but typical values are 60–80
for new buildings. Refer to your national building code for recommenda-
tions.
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and push the joystick.
and push the joystick.
and push the joystick.
and push the joystick.
Publ. No. T559772 Rev. a593 – ENGLISH (EN) – March 16, 2012