| 摘要 |
PROBLEM TO BE SOLVED: To provide an inspection method capable of performing accurate and simple inspection without being affected by the installation number of heating elements, when inspecting heating elements provided on a manufacturing facility of a glass product, for generating heat by electric conduction.SOLUTION: An inspection method of heating elements 30 provided on a manufacturing facility of a glass product, for generating heat by electric conduction includes a measuring step 60 for measuring continuously an electric resistance value of the whole circuit constituted of a plurality of heating elements 30, an operation step 70 for calculating an electric resistance changing rate from a secular change of the electric resistance value of the whole circuit or an average electric resistance value per heating element, and a determination step 80 for determining the state of the heating elements based on the electric resistance changing rate.SELECTED DRAWING: Figure 1 |
