MOISTURE MEASURING CHANNEL Russian patent published in 2021 - IPC G21C17/00 

FIELD: nuclear energy.

SUBSTANCE: invention relates to the field of nuclear energy and can be used, in particular, in systems for detecting, localizing and determining the magnitude of the flow rate of coolant leaks from pipelines and equipment of a pressurized water power reactor (PWPR). The measuring humidity channel contains at least one air humidity sensor 1 for placement in the containment zone of the reactor installation, a measuring device 2 for placement in a room adjacent to the containment zone in close proximity to the pressurized passage in the containment of the reactor installation, connected by communication lines with at least one humidity sensor 1 air, an information device 3 connected by communication lines with a measuring device 2 and with at least one air humidity sensor 1, wherein at least one air humidity sensor 1 includes a capacitive humidity sensor 4, reference capacitor 5, resistive temperature sensor 6, reference resistor 7, low-resistance precision resistor 8, relay 9 and electric heater 10. Measuring device 2 includes an amplifier-conversion unit, an alternating voltage generator 11, a direct current generator 12 and a constant voltage level meter 13. The capacitive humidity sensor 4 and the reference capacitor 5 are connected to the alternator 11 via an alternating voltage supply line 23 and to an amplification-converting unit via an alternating voltage supply line 24. The resistive temperature sensor 6 and the reference resistor 7 are connected in parallel with the DC generator 12 via the first power line 26 and with the DC voltage level meter 13 via the DC voltage transmission line 27. Relay 9 and electric heater 10 are connected in parallel with information device 3 via a second power line 29.

EFFECT: improving reliability of the channel by increasing the accuracy and information content of measuring the parameters of the controlled air and expanding the number of parameters characterizing the controlled air.

6 cl, 1 dwg