Directional differential pressure detector

A device for indicating a presence of a directional differential pressure between a first space and a second space separated from the first space by a barrier, the device comprising:

• a baseplate configured to be secured to the barrier such that the baseplate is not rotatable relative to the barrier;
• an inclined conduit connected to the baseplate and configured to be fluidically connected to the first and second spaces;
• wherein the inclined conduit is inclined at an angle relative to a horizontal plane when the baseplate is oriented in a vertical direction with respect to gravity;
• wherein while the baseplate is secured to the barrier such that the baseplate is not rotatable relative to the barrier, the angle of the incline relative to the horizontal plane is not adjustable;
• wherein the baseplate includes a plurality of baseplate mounting component sets configured to be aligned with a set of barrier mounting components;
• wherein the baseplate mounting component sets are arranged such that the baseplate is securable to the barrier in a first roll orientation by aligning a first set of baseplate mounting components of the plurality of baseplate mounting component sets with a first barrier mounting component set, and securing the baseplate to the barrier using the first set of baseplate mounting components and the first set of barrier mounting components;
• wherein the baseplate mounting component sets are arranged such that the baseplate is securable to the barrier in a second roll orientation, different from the first roll orientation, by aligning the first barrier mounting component set with a second baseplate mounting component set other than the first baseplate mounting component set, and securing the baseplate to the barrier using the first set of barrier mounting components and the second set of baseplate mounting components;
• a roll indicator configured to indicate a threshold differential pressure set point when the baseplate is secured to the barrier in the first roll orientation and when the baseplate is secured to the barrier in the second roll orientation;
• and
• at least one movable element disposed within the inclined conduit and movable from a first, vertically lower region of the inclined conduit to a second, vertically higher region of the inclined conduit in response to the directional differential pressure between the first and second spaces being greater than a threshold differential pressure.