An oxygen flow meter is a medical device designed to measure and regulate the flow of oxygen from a source, such as an oxygen tank or concentrator, to a patient. It ensures that the prescribed amount of oxygen, measured in liters per minute (LPM), is delivered accurately and consistently. The device typically consists of a flow control knob, a graduated scale to indicate the flow rate, and a transparent tube or gauge through which the oxygen flows. It’s commonly used in hospitals, clinics, and home healthcare settings to manage oxygen therapy for patients with respiratory conditions.