HT 11 EMISSIVITY MEASUREMENT APPARATUS

Description

The present Set-up is designed to measure the emissivity of test plate. The test plate comprises of a mica heater sandwiched between two circular plates. Black plate is identical with test plate, but its surface is blackened. As all the physical properties, dimension and temperature are equal; heat losses from both plates will be same except radiation loss. Hence the input difference will be due to difference in emissivity. Both plates are supported on individual brackets in a wooden enclosure with one side glass to ensure steady atmospheric conditions. Temperature Sensors are provided to measure the temperature of each plate and surrounding. Supply is given to heaters through separate variacs so that temperatures of both can be kept equal and is measured with Digital Voltmeter and Digital Ammeter.

EXPERIMENTS

  • Determining the Emissivity of a test plate.
  • Study the variation of emissivity of test plate with respect to absolute temperature.

 

FEATURES

  • Superb Painted structure
  • Simple to operate & maintain

 

UTILITIES REQUIRED

  • Electric Supply: 1Phase, 220 VAC, 4 Amp.
  • Table for set-up support

TECHNICAL DETAILS

Product & Code Emissivity Measurement Apparatus & HT 11
Dia 160mm ( Test plate Black Plate)
Heater (2Nos.) Nichrome Wire Heater. (One each for test plate and black plate)
Temperature Sensors RTD PT-100 type (3 Nos.)
Control panel Digital Voltmeter: 0-300Volt,
Digital Ammeter: 0-2Amps,
DPDT Selector switches: For Digital Voltmeter & Digital Ammeter,
Variacs: 0-230 V, 2 A, (2 Nos.) (One each for test plate and black plate),
Digital Temperature Indicator: 0-3000C, with multi-channel Switch,

On/Off switch, Mains Indicator etc
Overall Dimensions (L x B x H) 72 x 32 x 95
Cabinet to accommodate the slab assembly with front window of glass/acrylic
The whole set-up is well designed and arranged on a powder-coated structure.
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