FIELD: reactivity metering for monitoring and control systems of nuclear reactors. SUBSTANCE: digital reactimeter has n metering channels each incorporating pulse-current ionizing chamber. Electrometric amplifier, amplifier-signal-to- spectrometric-amplifier-code converter, discriminator, count-to-code converter, processing device, switch, and additional processing, control, and display device. Outputs of amplifier converters and processing and control device are integrated by means of channel bus. Processing device is connected through switch to additional processing, control, and display device. EFFECT: enlarged dynamic measurement range, enhanced noise immunity of reactimeter. 1 dwg
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