at a Glance · MWI LWI I Gamma X-Ray UV Infrared Microwaves Radiowaves SWI nm nm nm nm nm m m m mm mm mm m m m m Wavelength nm m m m mm Vle Thermal nfrared Terahert Electronics Automotive
Post on 31-Jul-2020
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Mea
sure
ment P
rinciple Special Applications
Camera Selection Criteria Standard Applic
atio
ns
Infraredcamera
Measured radiation ΦM
Output of Radiation Φ‘o
Emitted by themeasurement path ΦP
Input of radiation Φo
PathτP, θP
Re�ected radiation ΦP
Emitted radiation Φε
Transmitted radiation Φτ
Objectθo, ε, ρ, τ
Ambient θu
Background radiation ΦBG
Object Background θBG
Infrared Thermographyat a Glance
MWIR LWIR FIR
X-RayGamma UV Infrared Microwaves Radiowaves
SWIR
1 nm 10 nm 1 μm 10 μm 100 μm 10 mm 100 mm 10 m 100 m0.1 nm0.01 nm 100 nm 1 mm 1 m 1 km
100 nmWavelength 1 μm 10 μm 100 μm 1 mm
Visible Thermalinfrared
Terahertz
Electronics
Automotive
… and yours?
InfraTec GmbHInfrarotsensorik und MesstechnikGostritzer Straße 61 – 6301217 Dresden / GERMANY
Phone +49 351 871-8630Fax +49 351 871-8627E-mail thermo@InfraTec.deInternet www.InfraTec.eu
Spectrum of Electromagnetic Radiation
Thermographic Measurement Situation DefectIR-radiation IR-camera
Internal Excitation
Electrical
Induction
Ultrasound
Optical
External ExcitationThermal Optical
Triggering
Pulse phaseLock-In
Test object
Camera controlImage data processingSupply
Emission ε + Reflection ρ + Transmission τ = 1
Planck's Radiation Law and Wien's Displacement Law
Bulb, on glass
Measurement on a resistor
Bulb, through glass
Cooled photon detector camera
Uncooled microbolometer detector camera
Open
Grey filters
Spectral filters
Aperture
Use of spectral filters in flexible filter wheels inside the thermographic camera
Precise radiometric calibrationFor best-certified measurement accuracy from (-40 … 3,000) °C, ± 1 °C or ± 1 %
OpticsMicroscopic lenses, wide-angle lenses, telephoto lenses, zoom lenses
InterfacingIndustrial standards like GigE / 10 GigE, fast and ultra-precise triggering, analogue / digital data input
SoftwareConvenient camera control, real-time data acquisition and analysis
Thermal resolutionThermal resolution as low as 0.015 K
Spatial resolutionDetector formats with up to (1,920 × 1,536) IR pixels
Time resolutionAnalysis of high-speed dynamic temperature changes and processes
25,000Hz
Spectral Thermography – Provides Material-specific Precision Measurements
Active Thermography – Find Anomalies with Thermal Resolution in Millikelvin Range
Tool constructionInternal trigger interfaceCamera control and output of control signals for external devices
Represented by:
Des
ign
and
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Infr
aTec
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adem
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Aerospace
Airborne
Watch some videosillustrating what
thermography is used for:
Stress analytics
Natural sciences
With friendly support of:
Passive thermographyVisual image Lock-in Thermography
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