| 摘要 |
FIELD: automatic control systems, control of technological processes. SUBSTANCE: device for remote measurement includes A.C. generator, isolation transformer, two-wire measurement line, rectifier and RC filter which input is connected to output of rectifier and which output is output of device. At input device has converter connected to two-wire measurement line and resistor which second lead-out is coupled to key. Second lead-out of key is connected to second lead-out of converter and third lead-out of key is connected to third lead-out of converter and two-wire measurement line. Line is connected through capacitor placed in parallel to two leads-out of rectifier bridge which two other leads-out are connected to secondary winding of isolation transformer. Primary winding of transformer with one lead is connected directly and with the other lead through rectifier to A.C generator. EFFECT: capability to conduct precision measurements, increased operational reliability. |
