APPARATUS FOR TESTING MANOMETRIC INSTRUMENTS

摘要

An apparatus for testing fluid pressure relays providing an air-pressure output signal in response to an air pressure input signal, including an input pressure generator, a pair of pressure-responsive members connected through a balanced arm and reproducing in association with this arm the rated value of the transformation factor of the manometric instrument under testing; and the indicator of the position on the balanced arm, comprising a movable member carried by this balanced arm and a stationary member mounted in opposition to the movable member. The apparatus further comprisis a power output member pneumatically connected with the indicator of the position of the balanced arm and operatively associated through a pivoted arm with this balanced arm, and a double-channel recording device.