| 摘要 |
FIELD: measuring equipment.SUBSTANCE: digital temperature gauge is claimed, comprising a source 1 of the reference voltage connected with its output to the switch 2, which outputs are connected through the temperature sensor 3 and digital-controlled resistance (DCR) 4 with the amplifier inputs 5 and 6 of direct current. The amplifier outputs 5 and 6 are connected to the inputs of the subtract unit 7, which output through the connected sequentially generator of controlled frequency 8 is connected to the summing input of the reversible counter 9 (RC). The countdown input of PC 9 is connected to the output of the clock pulse generator 10 through the sequentially connected frequency divider 11 and a binary frequency multiplier 12. The output discharges of PC 9 are connected to a group of 4 discharge inputs of DCR, the binary frequency multiplier 12 and the decoder 13. The output of the decoder 13 is connected to the input of the digital indicator 14.EFFECT: increasing the operation speed of temperature measurement due to creation of the servo-mechanism of automatic control and high accuracy of measurement.1 dwg |
