User's Manual

20 Working with isotherms
20.1 Building isotherms
General
The camera features isotherm types that are specific to the building trade. You can
make the camera trigger the following types of isotherms:
■
Humidity: Triggers when a measurement tool detects a surface where the relative
humidity exceeds a preset value.
■
Insulation: Triggers when there is an insulation deficiency in a wall.
About the
Humidity isotherm
To detect areas where the relative humidity is less than 100% you can use the Hu-
midity isotherm, where you can set the relative humidity above which the isotherm
will colorize the image.
About the
Insulation
isotherm
The Insulation isotherm can detect areas where there may be an insulation deficiency
in the building. It will trigger when the insulation level falls below a preset value of
the energy leakage through a wall.
Different building codes recommend different values, but typical values for the insu-
lation level are 0.6–0.8 for new buildings. Refer to your national building code for
recommendations.
Procedure
Follow this procedure to set up an isotherm:
Push to display the menu system.
1
Use the joystick to go to
.
2
Push the joystick to display a submenu.3
Use the joystick to go to
.
4
Push the joystick. This will display a submenu.5
In the submenu, select Humidity or Insulation. This will display a dialog
box where you can set the necessary parameters.
6
Push the joystick.
The setup is now complete, and an isotherm will be displayed when the
parameters are met.
7
NOTE
For this isotherm to be meaningful, the parameters must be set with some care.
58 Publ. No. T559598 Rev. a554 – ENGLISH (EN) – September 27, 2011