Patent ID: 9163992
Filing Date: 2015-10-20
Classification: G01J

Abstract:
1. A measurement abnormality detection device for an infrared radiation thermometer for measuring a casting mold comprising: a thermoelectric thermometer for measuring temperature of a dummy black body point set in a cone hole existing on an inner surface of a cavity of the mold as a part having a shape absorbing infrared radiation or a part most close in shape characteristics to a black body in the mold; and a determination device that obtains temperatures of the dummy black body point measured by the thermoelectric thermometer and by the infrared radiation thermometer, and detects measurement abnormality on the basis of a difference between these measured temperatures, wherein the determination device is programmed to distinguish between a defect in the infrared radiation thermometer and a defect in the thermoelectric thermometer and accordingly judge, when the measurement abnormality is detected, whether