It takes 5 steps to install a differential pressure gauge:
Step 1: Attach 2 NPT 1/8” plug to the back of the gauge, tighten with a screwdriver
Step 2: Attach 2 NPT 1/8″ threaded joints on 2 sides of the gauge, tighten with a wrench
Step 3: Each gauge is equipped with 3 small screws and a screw card. Attach each small screw to a screw card. Then attach to 3 positions of the gauge, continue to tighten with a screwdriver
Step 4: Attach 3 long screw to 3 screw cards so that the face of the gauge is outward
Step 5: Attach 2 measuring tubes to 2 threaded joints
Note: Normally, we only need to attach 1 measuring tube, this tube will be threaded through the panel wall through a borehole to measure the pressure in the room. Meanwhile, the other threaded connector is used to measure the pressure in the metering area. From there, the gauge could calculate the pressure difference between two regions.
For more details, please watch this video: