| 摘要 |
A torque measuring device is provided for use in conjunction with a valve actuator of the type having a housing and an actuator member movable within the housing in unison with the opening and closure of a valve. The device comprises a mounting plate which is attached to the actuator housing in lieu of the valve. A coupler carried by the mounting plate is detachably secured to the actuator member so that the coupler moves in unison with the actuator member. A double acting piston and cylinder arrangement is attached to the coupler so that the torque applied to the valve actuator member is transmitted to the piston. Fluid gases measure the force imposed on the piston and thus the torque which is applied to the actuator member.
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