DIGITAL PYROMETER OF SPECTRAL RATIO Russian patent published in 1997 - IPC

FIELD: high- temperature technological processes. SUBSTANCE: device has oscillator with photodetector, complex light filter, photo current amplifier with automatic control unit, which has peak detector, setter and differential amplifier, which is connected to control element of photo current amplifier. In addition device has Schmidt flip-flop, which is connected to amplifier, univibrator, which is connected to Schmidt flip-flop, subtraction unit, which output is connected to control input of commutator, which connects amplifier to serial circuit of signal generator, Schmidt flip-flop, and inverter, which is connected to control input of commutator through AND gate, which second input is connected to flip-flop. Commutator connects clock oscillator and pulse counter. EFFECT: increased functional capabilities. 2 dwg