DETECTING METHOD OF CRACK OF RADIENT TUBE USING TDLS

摘要

PURPOSE: A method for detecting the hole of a radiant tube by using a TDSL apparatus is provided to detect a broken part of a radiant tube by heating a steel sheet with radiant heat. CONSTITUTION: A method for detecting the hole of a radiant tube by using a TDSL apparatus comprises: a step of producing the laser of the wavelength absorbed from a TDLS apparatus into moisture or CO2; a step of passing the laser through the inside of the heated chamber with a plurality of radiant tubes(10) installed by discharging the laser through a mail out log(30) arranged in one side of a heated chamber; a step of receiving the optical signal through a receiver(40) arranged on the other side of the heated chamber after passing through the internal space of the heated chamber; and a step of analyzing a spectrum from the received optical signal.