Radiation Eror In Temperature Measurement (Accessory)
Order Code: 14040
Category: Heat Transfer Lab
Introduction: Radiative heat transfer between a thermometer and its surroundings may significantly affect temperature readings obtained from the thermometer, especially when the temperature of a gas is to be measured while the thermometer ‘sees...
SPECIFICATION
Introduction: Radiative heat transfer between a thermometer and its surroundings may significantly affect temperature readings obtained from the thermometer, especially when the temperature of a gas is to be measured while the thermometer ‘sees’ surrounding surfaces at a higher or lower temperature than the gas.
Specifications: A small-scale accessory to demonstrate how temperature measurements can be influenced by sources of thermal radiation.Comprises three K-type thermocouples with different styles of bead mounted in a vertical air duct. A fan at the base of the duct provides a variable air flow over the cylinder. A band heater heats the duct wall adjacent to the thermocouple beads.Heater rating 200W appx.RTD PT-100 type thermocouples measure the air temperature upstream and the surface temperature of the heated duct section.Air flow is electronically adjustable over the range of 0-9 m/s by a variable-speed centrifugal blower.The air flow rate is measured by a vane-type anemometer in the outlet duct.A radiation shield can be lowered over the thermocouples to demonstrate the improvement in reading accuracy when the thermocouples are shielded from the source of radiation.A comprehensive instruction manual is included.
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