APPARATUS AND METHOD FOR CALCULATING CORRECTION FACTOR FOR CORRECTING ERRORS IN TEMPERATURE MEASUREMENT USING THERMOCOUPLE

摘要

The present invention relates to an apparatus and a method for calculating a correction factor for correcting errors in temperature measurement using a thermocouple. The apparatus for calculating a correction factor for correcting errors in temperature measurement using a thermocouple of the present invention comprises: a shield portion with a hollow structure; a gas introduction portion for introducing gas having a predetermined temperature and a predetermined flow velocity to the shield portion; a radiant heat supplying portion for supplying radiant heat having a predetermined flow velocity with respect to the gas in the shield portion; a first thermocouple closely mounted at the inner wall of the shield portion and measuring the temperature of the inner wall surface at the inside of the shield portion; a second thermocouple mounted to be located in a hollow part of the shield portion and measuring the temperature of the gas supplied with the radiant heat at the inside of the shield portion; and a processing portion for calculating the correction factor based on the temperature and the flow velocity of the introduced gas, the flow velocity of the supplied radiant heat, the measurement temperature of the first thermocouple, and the measurement temperature of the second thermocouple. The present invention provides the apparatus and the method for calculating the correction factor for correcting errors in temperature measurement using the thermocouple which has a practical and simple composition while capable of minimizing the errors in temperature measurement by the radiant heat.