Major tech MTi15, Инструкция по эксплуатации

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6.6. Focus
• To adjust focus, clockwise or Anti-clockwise rotates the IR Lens.
• When target comes into focus, it shows a sharper image.
• When the target moves out of focus, the thermal image becomes blurry.
Note: Correct focus is important in all imaging applications. Correct focus
makes sure that the infrared energy is correctly directed onto the pixels of
the detector. Without the correct focus, the thermal image can be blurry
and the radiometric data will be inaccurate. Out-of-focus infrared images
are frequently unusable or of little value.
6.7. Shutter
• The thermal image of the Thermal Imager becomes blurry, when the
Thermal Imager is not correcting after some minutes or the Thermal
Imager changes target.
• To get a clearer thermal image, the Thermal Imager will correct itself.
• The Thermal Imager has two modes for correcting, Manual and Auto
mode.
• In Manual Mode, hold down the down arrow button, the Thermal Imager
will correct.
• In Auto Mode, the Thermal Imager can correct automatically while the
thermal image of the Thermal Imager becomes blurry.
6.8. Temperature Measurement
• All objects radiate infrared energy.
• The quantity of energy radiated is base on the actual surface temperature
and the surface emissivity of the object.
• The Thermal Imager senses the infrared energy from the surface of the
object and uses this data to calculate an estimated temperature value.
• Many common objects and materials such as painted metal, wood, water,
skin, and cloth are very good at radiating energy and it is easy to get
relatively accurate measurements.
• For surfaces that are good at radiating energy (high emissivity). The
emissivity factor is >0.90.