Optimizing treatment, monitoring patient response, increased liability and safety demands reliable and accurate Oxygen flow measurement.
Most of these flow meters are so-called VA flow meters. VA flow meters stand for Variable Area flow meters basically the familiar “ball in glass tube” type flow meters. Mostly supplied as a combination of flow meters, humidifier, needle valve for flow adjustment and a filter. Ranges vary from 0-3 to 0-70 Litre per minute.
In general, the accuracy of these VA devices is defined as 5% which is sufficient for most applications. One should be aware however that the VA meters are extremely sensitive to pressure and temperature changes. As example if you purchase a unit calibrated for atmospheric pressure and you use it at 1 bar, the error you get is around 50%.
To verify that your Oxygen flow meters are accurate you need to regularly verify these type of flow meters Vögtlin offers a very simple, cost effective and reliable solution. The Vogtlin compact gas flow meter. An affordable high-end device that runs on a single AA-battery that has an accuracy of 1% and is not sensitive for pressure and temperature changes. Also, very suitable for the more critical Oxygen flow measurements (Available with alarms and analog outputs)
With long term stability, ability to measure high and low flows, amazing flexibility and 3-year warrantee this gas flow meter can be used for any critical application for Oxygen measurements.
Due to the integrated totalizer, it is also often used as a simple but accurate gas consumption measurement. Bigger flow rates are available so you can monitor the individual department consumption or detect leakage or open valves, avoiding dangerous situations and saving money.
The Vögtlin compact gas flow meters offers the insurance that your patients get the correct amount of Oxygen and insure accuracy, repeatability and due to that, safety.

The pressure- and temperature- independent alternative to variable area flow meters