2B20.15 Pressure Dependent on Depth

2B20.15 Pressure Dependent on Depth

Lower a small funnel covered with a rubber membrane attached to a manometer into a water filled vessel to see how the pressure changes.

A classic glass U-bend manometer is partially filled with colored water. The manometer stands near a large vase mostly full of clear water. A rigid plastic bulb which has been fit with a flexible rubber diaphragm on one side is submerged in the vase of water. Flexible tubing connects the bulb to one side of the manometer. The other side of the manometer is open to the air. A bright colored arrow on a stand indicates the height of the submerged bulb in the vase. In this photo, the bottom of the bulb is positioned just above the manometer's U-bend, and is positioned with the diaphragm facing the camera. The colored water in the open-air end of the manometer is slightly higher than the water in the end connected to the tubing.

In this follow-up photograph, the submerged bulb is now positioned near the bottom of the vase, much lower than the manometer's U-bend. The water in the open-air side of the manometer is much higher than the water in the side connected to the tubing.

 

Location: Jar: on floor next to U3 Manometer: C3-2