An input device for controlling buoyancy includes a means to control a second rate. You can select the second rate of ascent by using the first input device 81. This could be a rate selection switch. Alternativly, you can select the second rate of ascent by bypassing the first rate. Depending on the circumstances, a buoyancy control device may be comprised of a number of different features. One embodiment of a buoyancy control device includes a buoyancy tank as well as a weight belt.
Weight belts
Although the centre of buoyancy is out of the divers control, the suit weight and position of the cylinder can be adjusted by them. Weight belts and integrated BC weighs are also options that divers can use to control their buoyancy. These buoyancy control devices should be worn at the waist, above the hips, and below the knees, to provide a neutral trim.
Dump valves
A BCD has two separate ways to control your buoyancy. You have two options to control your buoyancy: either you can deflate the entire bladder or you can add some air to the bladder. The dump valves, which are usually attached to a string, help control the air level. BCDs usually have one to two dump valves per shoulder. When diving, you can use the dump valves to deflate the air bladder to maintain a comfortable buoyancy.
Jacket-style buoyancy control device
You can invest in a jacket-style BCD, whether you're new to diving or have been diving since years. Many BCDs are designed to fit comfortably over the swimsuit, so the weight will stay in place. Some models include front weight pockets and rear trim pockets that allow for easy access to your weights. A jacket-style BCD comes with a cushioned soft back. This makes it more comfortable to wear and lets you easily adjust its buoyancy.
Attachment systems for BC
A BC vest is a type that scuba divers use to keep buoyant and prevent from sinking. A BC is designed to keep the diver and SCUBA tanks in place. Although BCDs are similar, the design and functions may differ from one model to another. It is important to know how to use your BC properly and make a backup plan in case of malfunction.
Changing depth is controlled by pneumatic valves
Pneumatic valves are the heart of most industrial processes. They control the flow fluids using a forcebalance principle. A pneumatic valve is equipped with three ports: an exhaust, control signal output, or air supply. The device to be controlled is located above a lever arm. It is equipped with an adjustable diaphragm which changes pressure when the position of an external sensor changes. The supply air valve opens when the sensor pressure rises. The controlled device becomes more mobile when the pressure increases.