PHOTOCALORIMETRIC GAS ANALYZER Russian patent published in 1995 - IPC

FIELD: analytical devices. SUBSTANCE: photocalorimetric gas analyzer has a signal time discriminator; series-connected first comparator with controllable comparison signal threshold level, weight pulse integrator with controllable integration time, first synchronous adder of signal pulse amplitudes and first controllable amplifier; series-connected first pulse integrator with controllable integration time, second controllable amplifier and first inverter; series-connected switch, first unit for square-law conversion of amplitudes of signals, second pulse integrator with controllable integration time, third controllable amplifier and second synchronous adder of amplitudes of signals, third pulse integrator with controllable integration time, second unit for square-law conversion of amplitudes of signals and second inverter, third unit for square-law conversion of amplitudes of signals and second comparator with controllable comparison signal threshold level, first pulse counter and first control threshold element, second pulse counter, control unit for control of the first comparator threshold level, second threshold element and OR gate. EFFECT: enhanced reliability. 1 dwg