Fluke Ti20 user manual Glossary

Page 51

Appendix A

Glossary

Absolute Zero

The temperature (0 degrees Kelvin) of an object defined by the theoretical condition where the object has zero energy.

Accuracy

Maximum deviation, expressed in temperature units, or as a percentage of the temperature reading, or as a percentage of the full scale temperature value, or as a percentage of the target temperature, indicating the difference between a temperature reading given by an instrument under ideal operating conditions, and the temperature of a calibration source (per the ASTM standard test method E 1256-88).

Ambient Derating

Refer to Temperature Coefficient.

Ambient Operating Range

Range of the ambient temperature conditions over which the thermometer is designed to operate.

Ambient Temperature

Ambient temperature is the room temperature or temperature surrounding the instrument.

Ambient Temperature Compensation (TAMB)

Refer to Reflected Temperature Compensation.

ASTM

ASTM is an abbreviation for American Society for Testing and Materials.

Atmospheric Windows

The Atmospheric Windows is the infrared spectral bands in which the atmosphere best transmits radiant energy. Two predominant windows are located at 2 to 5 µm and at 8 to 14 µm.

Background Temperature

Temperature behind and surrounding the target, as viewed from the instrument.

A-1

Image 51

Contents Ti20 Limited Warranty and Limitation of Liability Table of Contents Ti20 List of Tables Ti20 List of Figures Ti20 Getting Started IntroductionContacting Fluke Symbols Safety InformationLaser Warning Labels Ti20Unpacking the Imager Standard AccessoriesUnpacking the Imager Ti20 Features and ControlsOperating the Controls Focusing the ImagerUnderstanding the Trigger Ti20Using the AC Power Adapter Using the AC Power AdapterCharging and Replacing the Batteries Using the Battery ChargerReplacing the Battery Pack Installing or Replacing the BatteriesAttaching the Wrist Strap Attaching the Wrist StrapInputs and Connections Connecting the USB CableCleaning Cleaning the CaseMounting the Imager on a Tripod Cleaning the Lens Ti20 Turning the Imager On and Off Basic OperationImager Home Display Zones Understanding the Home DisplayContents of the Home display is described in Table Aiming and Activating the Laser Comparing Frozen Images to Stored Images Capturing ImagesAdjusting the Backlight Setting the Level Setting the Temperature ScalePress Flevel to access the set Level function Adjusting the Span Using Distance to Spot Size Ratio DSManually Activating the Calibration Flag FOV Environmental Conditions Ambient Temperature Derating and Thermal ShockEmissivity Tape methodContact thermometer method Reflected Temperature Compensation Reflected Temperature CompensationTi20 Advanced Imager Operation Data Management and StorageViewing Stored Images Deleting Images Selecting a Palette Adjusting Emissivity Press FNto access the Adjust Emissivity display Adjusting Reflected Temperature Compensation Values Setting Alarm Limits Dag124f.bmp Adjusting Sleep Mode Ti20 Appendices Page Glossary Calibration Source Display ResolutionBlackbody CalibrationFull Scale Accuracy Field of View FOVFocus Point or Distance Full ScaleMinimum spot size Optical ResolutionLevel Micron or µmRepeatability Reflected Temperature CompensationResolution Relative HumidityTemperature Resolution Storage Temperature RangeTemperature Temperature Coefficient or Ambient DeratingWhy use non-contact infrared thermometers? Basics of Infrared MeasurementHow does IR work? What is emissivity? How to assure accurate temperature measurement?What is the distance to spot ratio? How to take temperature measurement?What are some uses for non-contact thermometers? Ti20 Typical Emissivity Values Table C-1. Emissivity Values for Metals Material To 14 µm Table C-1. Emissivity Values for Metals Material To14 µm Tin Unoxidized 0.3 Titanium Polished Typical Emissivity Values Ti20 Thermal SpecificationsOther