User Manual
Table Of Contents
- 1 Legal disclaimer
- 2 Warnings & Cautions
- 3 Notice to user
- 4 Customer help
- 5 Quick Start Guide
- 6 Parts lists
- 7 A note about ergonomics
- 8 Camera parts
- 9 Screen elements
- 10 Navigating the menu system
- 11 External devices and storage media
- 12 Pairing Bluetooth devices
- 13 Configuring Wi-Fi
- 14 Fetching data from external Extech meters
- 15 Handling the camera
- 15.1 Charging the battery
- 15.2 Inserting the battery
- 15.3 Removing the battery
- 15.4 Turning on and turning off the camera
- 15.5 Adjusting the angle of lens
- 15.6 Mounting an additional lens
- 15.7 Removing an additional infrared lens
- 15.8 Attaching the sunshield
- 15.9 Using the laser pointer
- 15.10 Calibrating the compass
- 15.11 Calibrating the touchscreen LCD
- 16 Working with images and folders
- 17 Working with fusion
- 18 Working with video
- 19 Working with measurement tools and isotherms
- 20 Annotating images
- 21 Programming the camera
- 22 Changing settings
- 23 Cleaning the camera
- 24 Technical data
- 25 Pin configurations
- 26 Dimensions
- 27 Application examples
- 28 About Flir Systems
- 29 Glossary
- 30 Thermographic measurement techniques
- 31 History of infrared technology
- 32 Theory of thermography
- 33 The measurement formula
- 34 Emissivity tables
Application examples27
27.5 Draft
27.5.1 General
Draft can be found under baseboards, around door and window casings, and above ceil-
ing trim. This type of draft is often possible to see with an infrared camera, as a cooler air-
stream cools down the surrounding surface.
Note
When you are investigating draft in a house, there should be sub-atmospheric pressure in the house.
Close all doors, windows, and ventilation ducts, and allow the kitchen fan to run for a while before you
take the infrared images.
An infrared image of draft often shows a typical stream pattern. You can see this stream pattern clearly
in the picture below.
Also keep in mind that drafts can be concealed by heat from floor heating circuits.
27.5.2 Figure
The image below shows a ceiling hatch where faulty installation has resulted in a strong
draft.
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