Directional differential pressure detector having an adjustable pivot arm

A device for indicating differential pressure between two spaces, the device permitting fluidic pressure connection of a first space and a second space separated by a barrier, the device comprising:

• a first conduit arranged to extend through at least a portion of the barrier separating the first space and the second space;
• a pivot arm fluidically connected to the first conduit and arranged to pivot relative to the first conduit to adjust an inclination of the pivot arm within a vertical plane and relative to a horizontal plane among a plurality of inclination angles in which a first, vertically lower region of the pivot arm is vertically lower than a second, vertically higher region of the pivot arm, wherein the first conduit and the pivot arm form a passageway for fluid;
• a transition region where the passageway is first surrounded by the pivot arm when traveling in a direction toward the pivot arm, wherein the pivot arm is arranged such that pivoting the pivot arm within the vertical plane does not change a location of the transition region relative to the first conduit;
• and
• at least one movable element disposed within the pivot arm and movable from the first, vertically lower region of the pivot arm to the second, vertically higher region of the pivot arm in response to a differential pressure between the first and second spaces.

A device for indicating differential pressure between two spaces, the device permitting fluidic pressure connection of a first space and a second space separated by a barrier, the device comprising:

• a first conduit arranged to extend through at least a portion of the barrier separating the first space and the second space;
• a pivot arm fluidically connected to the first conduit and arranged to pivot relative to the first conduit about a pivot axis, wherein pivoting the pivot arm about the pivot axis adjusts an inclination of the pivot arm relative to a horizontal plane among a plurality of inclination angles in which a first, vertically lower region of the pivot arm is vertically lower than a second, vertically higher region of the pivot arm, and wherein pivoting the pivot arm about the pivot axis does not change a direction of the pivot axis, wherein the first conduit and the pivot arm form a passageway for fluid;
• a transition region where the passageway is first surrounded by the pivot arm when traveling in a direction toward the pivot arm, wherein the pivot arm is arranged such that pivoting the pivot arm within the vertical plane does not change a location of the transition region relative to the first conduit;
• and
• at least one movable element disposed within the pivot arm and movable from the first, vertically lower region of the pivot arm to the second, vertically higher region of the pivot arm in response to a differential pressure between the first and second spaces.