THERMOGRAPHY

PRESENTED BY: Shakil Muhammad. UET Peshawar,Pak

Infra Red Thermography is a technique for producing a visible image of invisible (to our eyes) infra red radiation emitted by objects due to their thermal condit ions

OBJECTIVES. To detect hot or cold areas. To determine absolute temperature To view Thermal profi les To detect temperature loss

Infra Red is part of the Electromagnetic Spectrum

It travels in straight l ines at the speed of l ight

The useful part is divided between Short and Long wavelengths

Use of the correct wavelength is essential

Hand held portable camera

Battery Powered Operating at correct

wavelength Range…..-20°c to

+1500°c. Real t ime display Image Recording

capabil i ty

Non Contact Rapid Scanning Data can be recorded in differing formats Images produced are comprehensive &

reliable

Object radiates infra red radiation Temperature difference Differences are detected and displayed

visually Emissivity values must be observed

Non Contact Non Intrusive Can work at a distance Fast and Reliable Portable Convincing Results

There must be a temperature difference for certain surveys

Operator experience is essential Filters may be needed for certain

applications Sensit ivity and Resolution reduce with

distance and angle of view

Switch Gear Fuse boxes Cable runs Electrical

connectors Insulat ion Transformers

22.7°C

43.7°C

25

30

35

40

SP01

Used for the detection of;

Corroded connections Slack / loose connectors Connectors at too high an

operating temperature Hot spots

The detection of process or manufacturing faults

Can be used as a quality control tool