Optical Pyrometer (Leaving Cert Engineering): Flashcards
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11 cards from this deck
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Practise the cards
11 cards from this deck
Optical pyrometer
Optical pyrometer
Temperature measuring device for furnaces
Operating principle of optical pyrometer
Operating principle of optical pyrometer
Light intensity - hotter objects emit brighter light
Non-contact measurement advantage
Non-contact measurement advantage
Measures extremely high temperatures without direct contact
Function of potentiometer
Function of potentiometer
Controls electric current through the bulb
Vanishing filament effect indicates
Vanishing filament effect indicates
Correct temperature reading achieved
Position A meaning
Position A meaning
Bulb too bright compared to furnace
Position B meaning
Position B meaning
Correct match - bulb equals furnace brightness
Position C meaning
Position C meaning
Bulb too dim compared to furnace
More current means
More current means
Hotter furnace temperature
Four key components
Four key components
Furnace window, handheld device, bulb, potentiometer
How brightness matching works
How brightness matching works
Adjust bulb brightness until it matches furnace light