Messeinrichtung fuer nichtelektrische Groessen

摘要

The stabilised measuring circuit for non-electrical variables is suitable for use as a transducer in production process control systems. The transducer output signal is in series with a second identical unit (2) which is connected to a stabilised source (8) and via a change-over switch (9) to a resistance matrix (3). The output of the matrix is amplified (15) and the signal is connected to a second change-over switch (10). Both switcher are synchronised by a central control (20). The output from the first transducer is connected to one output terminal (19) and to a zero-balancing circuit (17) whose other input is taken from the second change-over switch. The performance of the transducers is independent of variations in amplitude or frequency of their unstablised supply voltage.