Ensure that all medical gas equipment is serviced regularly and routinely checked thoroughly for damage.Static electricity or dirt may cause the indicator to stick to the side of the tube and result in an inaccurate reading. Ensure the bobbin or ball is floating freely.It’s vital to keep the flow meter in working condition to ensure that the patient receives safe and effective oxygen therapy. Now that you know how to read your oxygen flow meter, you’ll want to ensure accurate measurements by caring for your equipment. Flow meters are generally less accurate at low flows and offer more precise when serviced regularly.Non-rotating H float (Float that looks like a capital H tipped on its side).These floats often have slots or grooves cut into the edge, which causes the indicator to spin as the gas is flowing) Rotating indicators (Floats with an upper head - or rim - larger than the rest of the indicator.There are several different types of indicators that can be used in flow meters, including:.Otherwise, the bobbin or ball will not give an accurate measurement of flow rates. The flow meter must remain vertical during use.Ensure you use an authorised repairer for maintenance of this equipment to ensure correct functionality. You may be able to fix a broken flow meter, but you must use the correct ball or bobbin if you opt to repair rather than replace it.Flow meter units intended for one gas should not be used for another type of gas. Medical gases vary in terms of density and viscosity and so will require a unique flow meter.However, while bobbin flow meters are designed to be read at the top, ball flow meter measurements should be taken from the middle of the ball. Learning how to read the oxygen flow meter ball is similar to reading the bobbin. The number on the scale will indicate the flow rate. Draw a horizontal line from the top of the bobbin to the scale located on or beside the flow meter tube. When learning how to read this type of oxygen flow meter, simply measure from the top of the bobbin. This design optimises gas flow around the indicator. These flow meters contain a small, pointed bobbin or float. There are a variety of flow meter options available but one of the most common and most accurate are bobbin flow meters. A numbered scale allows the caregiver to determine the flow rate of oxygen. As the gas moves through the tube, it lifts the indicator until the pressure of the gas is equal to the pressure above the indicator. ![]() Oxygen flow meters are a relatively simple device that consists of a tube through which gas passes. But how exactly do you read the oxygen flow measurement? We’ve got the answer below. When valves are open, the gas moves through the flow meter and causes the ball or bobbin to float. A flow meter is constructed from a tapered tube made from glass or plastic and contains a small, free-moving indicator such as a ball or bobbin. Understanding Oxygen Flow Meter Measurement: A Guide to ReadingĪn oxygen flow meter is a machine that measures the flow rate of various medical gases.
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