Final answer:
A pneumatic relay, also known as a cumulator, operates by using compressed air to control the flow of another medium. On the other hand, a nonbleed type controller is a type of controller that doesn't allow any bleed or leakage of the medium it controls. The key similarity between a pneumatic relay and a nonbleed type controller is that they both regulate the flow of a medium.
Step-by-step explanation:
A pneumatic relay, also known as a cumulator, operates by using compressed air to control the flow of another medium, such as fluids or gases. It consists of a piston, a valve, and an air pressure supply. When the air pressure is applied to the piston, it moves and opens or closes the valve, allowing the medium to flow or stop.
On the other hand, a nonbleed type controller is a type of controller that doesn't allow any bleed or leakage of the medium it controls. It operates using feedback from sensors to maintain a desired set point. The controller uses electrical signals to activate valves that regulate the flow of the medium.
The key similarity between a pneumatic relay and a nonbleed type controller is that they both regulate the flow of a medium. However, they differ in their construction and operation. A pneumatic relay uses compressed air pressure to control the flow, while a nonbleed type controller uses electrical signals and valves to regulate the flow.