DEVICE WITH CONDUCTOMETRIC PICKUP Russian patent published in 1997 - IPC

FIELD: instrumentation, devices testing composition of substances, identifying them, determining presence of impurities with anomalous electric conductivity in them. SUBSTANCE: quartz generator of device is manufactured in the form of generator of rectangular pulses and is provided with former of forward and counterphase pulse sequences of identical ( apart from phasal ) output characteristics. Device includes resonance filters tuned to frequency of one of odd harmonics which are simultaneously used for provision of interstage matching and adder incorporating conductometric cells and balancing resistor. Adder is connected to outputs of resonance filters and is coupled to unit registering measurements with output. EFFECT: expanded application field, improved functional reliability. 1 dwg