PYROMETRIC DEVICE FOR MEASURING TEMPERATURE OF GAS- TURBINE ENGINE BLADE Russian patent published in 1995 - IPC

FIELD: measuring equipment. SUBSTANCE: device has optical head 1 connected with light receivers 3,4 through split light conductor 2 and with receiver 4 through filter 5, amplifiers 6,7 at outputs of the receivers, functional converter 8 connected with the outputs of the amplifiers, divider 9 at the output of the functional converter, ratio meter 10 connected with the output of the divider and output of the first amplifier 6, and comparator 11 and indicator 12 at the output of ratio meter 10 connected in series. Deflection of the signal at the output of meter 10 from 2 indicates that a damage has appeared. EFFECT: enhanced reliability. 2 dwg