Fluke Ti20 Blackbody, Calibration Source, Colored Body, Detector, Display Resolution, Drift

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Ti20

Users Manual

Blackbody

A perfect emitter; an object that absorbs all the radiant energy incident on it at all wavelengths and reflects and transmits none. A surface with emissivity of unity (1.00).

Calibration

A methodical measurement procedure to determine all the parameters significantly affecting an instrument’s performance.

Calibration Source

A source (blackbody, hot plate, etc.) of known and traceable temperature and emissivity. Usually NIST traceable in the USA, with other recognized standards available for international customers.

Colored Body

See Non-Gray Body.

D:S

Distance to spot size ratio. See Optical Resolution.

Detector

A transducer which produces a voltage or current proportional to the IR energy incident upon it. See also thermopile, pyroelectric, and Si detectors.

DIN

Deutsches Institut für Normung (DIN) is the German standard for many instrumentation products.

Display Resolution

The level of precision to which a temperature value can be displayed, usually expressed in degrees or tenths of degrees.

Drift

The change in instrument indication over a long period of time, not caused by external influences on the device (per the ASTM standard test method E 1256-88).

EMC

Electro-Magnetic Compatibility is the resistance to electrical signal disturbances within IR thermometers.

Emissivity

Emissivity is the ratio of infrared energy radiated by an object at a given temperature and spectral band to the energy emitted by a perfect radiator (blackbody) at the same temperature and spectral band. The emissivity of a perfect blackbody is unity (1.00).

EMI/RFI Noise

Electro-Magnetic Interference/Radio Frequency Interference (EMI and RFI) may cause disturbances to electrical signals within IR thermometers. EMI and RFI noise is most commonly caused by devices by switching motors (air conditioners, power tools, refrigeration systems, etc.).

Far Field

A measured distance substantially greater than the focus distance of the instrument; typically greater than 10 times the focus distance.

A-2

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Contents Ti20 Limited Warranty and Limitation of Liability Table of Contents Ti20 List of Tables Ti20 List of Figures Ti20 Introduction Getting StartedContacting Fluke Safety Information SymbolsTi20 Laser Warning LabelsStandard Accessories Unpacking the ImagerUnpacking the Imager Features and Controls Ti20Focusing the Imager Operating the ControlsTi20 Understanding the TriggerUsing the AC Power Adapter Using the AC Power AdapterUsing the Battery Charger Charging and Replacing the BatteriesInstalling or Replacing the Batteries Replacing the Battery PackAttaching the Wrist Strap Attaching the Wrist StrapConnecting the USB Cable Inputs and ConnectionsCleaning the Case CleaningMounting the Imager on a Tripod Cleaning the Lens Ti20 Basic Operation Turning the Imager On and OffUnderstanding the Home Display Imager Home Display ZonesContents of the Home display is described in Table Aiming and Activating the Laser Capturing Images Comparing Frozen Images to Stored ImagesAdjusting the Backlight Setting the Temperature Scale Setting the LevelPress Flevel to access the set Level function Using Distance to Spot Size Ratio DS Adjusting the SpanManually Activating the Calibration Flag FOV Ambient Temperature Derating and Thermal Shock Environmental ConditionsTape method EmissivityContact thermometer method Reflected Temperature Compensation Reflected Temperature CompensationTi20 Data Management and Storage Advanced Imager OperationViewing 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 Display Resolution BlackbodyCalibration Calibration SourceField of View FOV Focus Point or DistanceFull Scale Full Scale AccuracyOptical Resolution LevelMicron or µm Minimum spot sizeReflected Temperature Compensation ResolutionRelative Humidity RepeatabilityStorage Temperature Range TemperatureTemperature Coefficient or Ambient Derating Temperature ResolutionBasics of Infrared Measurement Why use non-contact infrared thermometers?How does IR work? How to assure accurate temperature measurement? What is emissivity?How to take temperature measurement? What is the distance to spot ratio?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 Specifications ThermalOther