DEVICE FOR METERING COOLANT LEVEL IN REACTOR (DESIGN VERSIONS) Russian patent published in 2000 - IPC

FIELD: nuclear reactors. SUBSTANCE: device has elongated case 1 accommodating longitudinally arranged thermoelectric meters 2, 3 with cable-type auxiliary heated thermoelectric meter 4 placed between their junctions which provides for continuous measurement of coolant temperature. As an alternative, device may have elongated case accommodating longitudinally arranged differential cable-type thermoelectric meters with non-heated auxiliary thermoelectric meter placed between their ends. Electric heating system 6 for junctions of thermoelectric meters is built up of digital heating elements 16, 17 connected in series with cable-type conductors 15. Sheaths of thermoelectric meters in vicinity of their junctions and those of heating elements are connected to inner surface of case 1 through soldered joints 7, 8. EFFECT: improved informative measurement accuracy. 20 cl, 13 dwg