User's Manual
Table Of Contents
- Table of contents
- 1 Warnings & Cautions
- 2 Notice to user
- 3 Customer help
- 4 Documentation updates
- 5 Important note about this manual
- 6 Parts lists
- 7 Quick Start Guide
- 8 A note about ergonomics
- 9 Camera parts
- 10 Screen elements
- 11 Navigating the menu system
- 12 Connecting external devices and storage media
- 13 Pairing Bluetooth devices
- 14 Configuring Wi-Fi
- 15 Handling the camera
- 16 Working with images
- 17 Working with thermal fusion and picture-in-picture image modes
- 18 Working with measurement tools
- 19 Fetching data from external Extech meters
- 20 Working with isotherms
- 21 Annotating images
- 22 Recording video clips
- 23 Changing settings
- 24 Cleaning the camera
- 25 Technical data
- 26 Dimensional drawings
- 26.1 Camera dimensions, front view (1)
- 26.2 Camera dimensions, front view (2)
- 26.3 Camera dimensions, side view (1)
- 26.4 Camera dimensions, side view (2)
- 26.5 Camera dimensions, 41.3 mm/15° lens, side view
- 26.6 Camera dimensions, 24.6 mm/25° lens, side view
- 26.7 Camera dimensions, 13.1 mm/45° lens, side view
- 26.8 Infrared lens (41.3 mm/15°)
- 26.9 Infrared lens (24.6 mm/25°)
- 26.10 Infrared lens (13.1 mm/45°)
- 26.11 Battery (1)
- 26.12 Battery (2)
- 26.13 Battery charger (1)
- 26.14 Battery charger (2)
- 26.15 Battery charger (3)
- 27 Application examples
- 28 Introduction to building thermography
- 28.1 Disclaimer
- 28.2 Important note
- 28.3 Typical field investigations
- 28.3.1 Guidelines
- 28.3.2 About moisture detection
- 28.3.3 Moisture detection (1): Low-slope commercial roofs
- 28.3.4 Moisture detection (2): Commercial & residential façades
- 28.3.5 Moisture detection (3): Decks & balconies
- 28.3.6 Moisture detection (4): Plumbing breaks & leaks
- 28.3.7 Air infiltration
- 28.3.8 Insulation deficiencies
- 28.4 Theory of building science
- 28.4.1 General information
- 28.4.2 The effects of testing and checking
- 28.4.3 Sources of disruption in thermography
- 28.4.4 Surface temperature and air leaks
- 28.4.5 Measuring conditions & measuring season
- 28.4.6 Interpretation of infrared images
- 28.4.7 Humidity & dew point
- 28.4.8 Excerpt from Technical Note ‘Assessing thermal bridging and insulation continuity’ (UK example)
- 29 Introduction to thermographic inspections of electrical installations
- 29.1 Important note
- 29.2 General information
- 29.3 Measurement technique for thermographic inspection of electrical installations
- 29.4 Reporting
- 29.5 Different types of hot spots in electrical installations
- 29.6 Disturbance factors at thermographic inspection of electrical installations
- 29.7 Practical advice for the thermographer
- 30 About FLIR Systems
- 31 Glossary
- 32 Thermographic measurement techniques
- 33 History of infrared technology
- 34 Theory of thermography
- 35 The measurement formula
- 36 Emissivity tables
10551903;a1
Figure 28.4 Stress concentration factor (C) distributions for various wind directions and wind velocities
(v) relative to a building.
Wind conditions can vary substantially over time and between relatively closely situ-
ated locations. In thermography, such variations can have a clear effect on the mea-
surement results.
It has been demonstrated experimentally that the differential pressure on a façade
exposed to an average wind force of about 5 m/s (16.3 ft/s) will be about 10 Pa.
Mechanical ventilation results in a constant internal negative or positive pressure
(depending on the direction of the ventilation). Research has showed that the negative
pressure caused by mechanical extraction (kitchen fans) in small houses is usually
between 5 and 10 Pa. Where there is mechanical extraction of ventilation air, e.g. in
multi-dwelling blocks, the negative pressure is somewhat greater, 10–50 Pa. Where
there is so-called balanced ventilation (mechanically controlled supply and extract
air), this is normally adjusted to produce a slight negative pressure inside (3–5 Pa).
The differential pressure caused by temperature differences, the so-called chimney
effect (airtightness differences of air at different temperatures) means that there is a
negative pressure in the building’s lower part and a positive pressure in the upper
Publ. No. T559598 Rev. a554 – ENGLISH (EN) – September 27, 2011 121
28 – Introduction to building thermography