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Computerized Emissivity Measurement Apparatus

Product Code : EL-HAMTLE-10754

Quick Answer:

The Computerized Emissivity Measurement Apparatus is a heat-transfer-by-radiation trainer built around a metallic sample heated by a concentrated beam from a continuously adjustable halogen lamp and parabolic reflector, with the sample placed on a thermocouple at the reflector's focal point and its emitted thermal radiation measured by a thermopile mounted on a moveable carriage so readings can be taken at different distances. It demonstrates that heat radiation, one of the three basic forms of heat transfer, travels via electromagnetic waves and, unlike conduction and convection, can propagate through a vacuum without needing a material medium, letting students study transient behavior, create power balances, and verify Lambert's inverse-square law, the Stefan-Boltzmann law, and Kirchhoff's law using aluminum, copper, and steel test samples. Its microprocessor-based instrumentation, protected in the housing, connects to a PC via USB, where educational software with explanatory texts and illustrations aids data acquisition, system operation, and understanding of the theoretical principles.

Overview:

The Computerized Emissivity Measurement Apparatus offers basic experiments for targeted teaching on the topic of heat transfer by radiation. At the heart of the experimental unit is a metallic sample heated by a concentrated light beam, which is generated by a continuously adjustable halogen lamp and a parabolic reflector that concentrates the radiation to a focal point. A sample is placed on a thermocouple located at the focal point, and the thermal radiation emitted by the sample is measured by a thermopile; in order to measure the radiation at different distances, the thermopile is mounted on a moveable carriage.

Heat radiation is one of the three basic forms of heat transfer: unlike heat conduction and convection, radiation transfers heat via electromagnetic waves and can propagate in a vacuum, since it is not bound to a material. The microprocessor-based instrumentation is well protected in the housing, and the unit is connected to the PC via USB, where software is used for system operation and for data acquisition, alongside educational software whose explanatory texts and illustrations significantly aid understanding of the theoretical principles.

FEATURES:

Effect of different surfaces on heat transfer by radiation

Functions educational software, data acquisition, system operation

Fundamentals of heat transfer

Study transient behavior

Create power balances

Verify Lambert’s inverse-square law

Verify Stefan-Boltzmann law

Verify Kirchhoff’s law

SPECIFICATION:

Halogen lamp :

Electrical power: 150W

Max. Temperature: approx. 560°C

Aluminum samples, Ø 20mm

1x matt anodized on both sides

1x painted on both sides (high-temperature paint)

1x matt anodized with one painted side

Copper samples, Ø 20mm

1x nickel-plated

1x heavily oxidized

Steel sample, Ø 20mm

1x heavily oxidized

Measuring ranges :

Temperature: 0…780°C

Radiation intensity: 0…1250W/m2

Required for Operation :

230V, 50Hz, 1 phase

230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase

DIMENSIONS AND WEIGHT:

LxWxH (approx.): 700x450x400mm

Weight (approx.): 20kg

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Last Updated: September 2026