| 摘要 |
A system is described for connecting two force equilibrium pneumatic balance regulators, adapted to be actuated by a pair of variables, so that those regulators can be operated in cascade or manually and the operation can be readily changed at will from cascade to manual, and vice versa, without causing jumps in the output pressure of the system; whereby, during manual operation, the output of an amplifier-relay of the primary regulation is utilized as a set value for the secondary regulator whereas, during manual operation, a secondary variable is used as set value for the secondary regulator, and the manual outlet of the two cascade regulators is connected directly to the positive reaction of the secondary regulator.
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