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 Camera parts
- 9 Screen elements
- 10 Navigating the menu system
- 11 Connecting external devices and storage media
- 12 Pairing Bluetooth devices
- 13 Configuring Wi-Fi
- 14 Handling the camera
- 15 Working with images
- 16 Working with thermal fusion and picture-in-picture image modes
- 17 Working with measurement tools
- 18 Fetching data from external Extech meters
- 19 Working with isotherms
- 20 Annotating images
- 21 Recording video clips
- 22 Changing settings
- 23 Cleaning the camera
- 24 Technical data
- 25 Dimensional drawings
- 25.1 Camera dimensions, front view (1)
- 25.2 Camera dimensions, front view (2)
- 25.3 Camera dimensions, side view (1)
- 25.4 Camera dimensions, side view (2)
- 25.5 Camera dimensions, side view (3)
- 25.6 Infrared lens (30 mm/15°)
- 25.7 Infrared lens (10 mm/45°)
- 25.8 Battery (1)
- 25.9 Battery (2)
- 25.10 Battery (3)
- 25.11 Battery charger (1)
- 25.12 Battery charger (2)
- 25.13 Battery charger (3)
- 25.14 Battery charger (4)
- 26 Application examples
- 27 Introduction to building thermography
- 27.1 Disclaimer
- 27.2 Important note
- 27.3 Typical field investigations
- 27.3.1 Guidelines
- 27.3.2 About moisture detection
- 27.3.3 Moisture detection (1): Low-slope commercial roofs
- 27.3.4 Moisture detection (2): Commercial & residential façades
- 27.3.5 Moisture detection (3): Decks & balconies
- 27.3.6 Moisture detection (4): Plumbing breaks & leaks
- 27.3.7 Air infiltration
- 27.3.8 Insulation deficiencies
- 27.4 Theory of building science
- 27.4.1 General information
- 27.4.2 The effects of testing and checking
- 27.4.3 Sources of disruption in thermography
- 27.4.4 Surface temperature and air leaks
- 27.4.5 Measuring conditions & measuring season
- 27.4.6 Interpretation of infrared images
- 27.4.7 Humidity & dew point
- 27.4.8 Excerpt from Technical Note ‘Assessing thermal bridging and insulation continuity’ (UK example)
- 28 Introduction to thermographic inspections of electrical installations
- 28.1 Important note
- 28.2 General information
- 28.3 Measurement technique for thermographic inspection of electrical installations
- 28.4 Reporting
- 28.5 Different types of hot spots in electrical installations
- 28.6 Disturbance factors at thermographic inspection of electrical installations
- 28.7 Practical advice for the thermographer
- 29 About FLIR Systems
- 30 Glossary
- 31 Thermographic measurement techniques
- 32 History of infrared technology
- 33 Theory of thermography
- 34 The measurement formula
- 35 Emissivity tables
■ For the user the important thing is that the finished product fulfills the promised
requirements in terms of the building’s thermal insulation and airtightness. For the
individual, buying a house involves a considerable financial commitment, and the
purchaser therefore wants to know that any defects in the construction will not in-
volve serious financial consequences or hygiene problems.
The effects of testing and checking a building’s insulation and airtightness are partly
physiological and partly financial.
The physiological experience of an indoor climatic environment is very subjective,
varying according to the particular human body’s heat balance and the way the indi-
vidual experiences temperature. The experience of climate depends on both the indoor
air temperature and that of the surrounding surfaces. The speed of movement and
moisture content of indoor air are also of some significance. Physiologically, a draft
produces the sensation of local cooling of the body’s surface caused by
■ excessive air movements in the occupied zone with normal air temperature;
■ normal air movements in the occupied zone but a room temperature that is too
low;
■ substantial radiated heat exchange with a cold surface.
It is difficult to assess the quantitative effects of testing and checking a building’s
thermal insulation.
Investigations have shown that defects found in the thermal insulation and airtightness
of buildings cause heat losses that are about 20–30% more than was expected.
Monitoring energy consumption before and after remedial measures in relatively large
complexes of small houses and in multi-dwelling blocks has also demonstrated this.
The figures quoted are probably not representative of buildings in general, since the
investigation data cannot be said to be significant for the entire building stock. A
cautious assessment however would be that effectively testing and checking a
building’s thermal insulation and airtightness can result in a reduction in energy
consumption of about 10%.
Research has also shown that increased energy consumption associated with defects
is often caused by occupants increasing the indoor temperature by one or a few de-
grees above normal to compensate for the effect of annoying thermal radiation towards
cooled surfaces or a sensation of disturbing air movements in a room.
27.4.3 Sources of disruption in thermography
During a thermographic survey, the risk of confusing temperature variations caused
by insulation defects with those associated with the natural variation in U values along
warm surfaces of a structure is considered slight under normal conditions.
Publ. No. T559597 Rev. a554 – ENGLISH (EN) – September 27, 2011 109
27 – Introduction to building thermography