| 摘要 |
FIELD: measurement equipment.SUBSTANCE: device comprises a resistance thermometer RT, connected into a bridge circuit 1. A bridge power supply diagonal via a ballast resistance 2 is connected to a winding 3 of a transformer 4, and a measurement diagonal via serially back-to-back connected windings 5 and 6 of the transformer 4 is connected to the input of an AC amplifier 7, the output of which via a serially connected rectifier 8 is connected with an output of a device 9 and with plates 10 and 11 of a capacitor with a dielectric 12. At the same time the plate 11 of the capacitor is connected with a plunger 13 of the transformer 4, which made it possible to eliminate mechanical friction in units of the device feedback chain for temperature measurement, and, accordingly, to increase reliability of its operation.EFFECT: higher reliability of its operation.1 dwg |
