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CAT NO: DIDACTICNLE-Export-185006
Emissivity Apparatus.
Emissivity Apparatus
The Emissivity Apparatus consists of two similar aluminium
discs. One of the discs is coated with black color and behaves like a
black surface and the other disc is having a machined plane surface.
Discs are fitted with similar heaters. The discs are placed in the
enclosure in the symmetrical manner. Heater terminals taken out from the
enclosure are connected to the mains of supply through dimmer stat to
vary the heater input.. Temperature of each disc is measured by 3
thermocouples. One more thermocouple is placed inside the enclosure to
measure surrounding temperature.The control panel consists of a two
dimmers to control the voltage supplied to each heaters. A Voltmeter, an
ammeter measures the voltage & current supplied to each heater. A
digital temperature indicator reads the temperatures recorded by
thermocouples.
Specifications:
Test Plate: Made of aluminium, With embedded heater, Diameter 150mm
Black Plate: Made of aluminium, with embedded heater, Diameter 150mm
Wooden Cabinet: Cabinet with glass door on front side for housing the plates
Electric Heater: Disk Type Heater, Capacity 200 W, Supply 230 V AC – 2 Nos
Dimmer: Range 0-250 V AC, 2 A – 2 Nos
Digital Voltmeter: Range 0-500 V AC – 2 Nos
Digital Ammeter: Range 0-2 A AC – 2 Nos
Temperature Sensors: Type ‘K’ Thermocouples – 7 Nos
Temperature Indicator: 8 Channel Indicator with Selector Switch, Range 0-199.9 °
Frame: Made of M.S. Square Tubes & Sheets, Welded & Powder coated
Experimental Capabilities:
Determination of thermal conductivity of slab of composite material
Comparison of calculated value of thermal conductivity with actual value
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