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Thermal Imagers
Setting Emissivity (Ti25 and TiR1 only)
13
the object's surface. The Imager detects the infrared energy from an object and
uses this information to estimate the temperature of the object. Most of the
objects measured such as painted metal, wood, water, skin, and cloth are very
efficient at radiating energy and it is easy to get very accurate measurements.
For surfaces that are efficient at radiating energy (high emissivity), the
emissivity factor is estimated to be 95% (or 0.95). This estimate works for
most purposes. This simplification does not work however, on shiny surfaces
or unpainted metals. These materials are not efficient at radiating energy and
are classified as having low emissivity. To accurately measure materials with a
low emissivity, an emissivity correction is necessary. The easiest correction
method is to set the Imager to the proper emissivity value so the Imager
automatically calculates the correct surface temperature. If the Imager uses a
fixed emissivity value (meaning that it is set to one value and the user cannot
adjust it), then the Imager’s measurement must be multiplied by a value found
in a look up table to get a more accurate estimate of the actual temperature.
The TiR1 and Ti25 have the ability to set emissivity by directly entering a
value or using a table of built-in values. The TiR and Ti10 have emissivity that
is permanently fixed at 0.95, which works well for most surfaces but can
provide very inaccurate reading if used directly on a shiny metal surface.
A significant amount of information is available on emissivity. Further study
of this topic is recommended to get the most accurate temperature
measurements using the Imager.
Setting Emissivity (Ti25 and TiR1 only)
Setting your Imager with correct emissivity values is critical to making
accurate temperature measurements. To set the emissivity value:
1. Press a until Emissivity appears over c.
2. Press the softkey labeled Emissivity.
At this point, emissivity can be set directly as a value or selected from a list of
emissivity values for some common materials. To select from a list of common
materials:
1. Press the softkey labeled Table.
2. Press the softkey labeled Up or Down to move between the materials in
the list. The emissivity value for each material is shown on the screen as
the selection moves between the different materials
3. Press the softkey labeled Done to select the highlighted material.
- Ti10, Ti25, TiR and TiR1 1
- Table of Contents 3
- List of Tables 5
- List of Figures 5
- Introduction 7
- Contacting Fluke 7
- Safety Information 8
- Unpacking the Imager 9
- Charging the Battery 9
- Features and Controls 9
- Using the Menu 11
- Setting the Imager Clock 11
- Setting the Date 12
- Setting the Time 12
- Saving Imager Data 13
- Adjusting the Thermal Image 13
- Selecting a Palette 14
- Setting the Range 14
- Setting the Level (Manual) 15
- TiR Only) 16
- Setting IR-Fusion 16
- Thermal Imagers 17
- Users Manual 18
- Setting File Format 20
- SmartView™ Software 20
- Changing the SD Card 21
- Setting the Backlight 21
- General Specifications 21
- Detailed Specifications 23
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