Mass Flow Rate Calculator
Do you know the volumetric flow of a gas or gas mixture, but need to express it as mass flow? The KNF Mass Flow Rate Calculator makes it easy. Simply select your gas or gas mixture, enter the volumetric flow rate and our calculator will give you the result.
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*All density values are given in accordance with ISO 8778 at 20 °C (293,15 °K, 68 °F) and 1 bar absolute (14,5 psi, 750,06 torr).
How to Use the KNF Mass Flow Rate Calculator
Volumetric flow is the most common way to represent flow. However, some applications, such as chemical processes, require the actual amount of gas molecules. In these applications, it is much more useful to express the flow as mass flow. For this reason, KNF has developed this mass flow rate calculator, which makes it easy to convert from volumetric flow rate to mass flow rate. Simply enter the gas or gas mixture to be transferred and its volumetric flow rate. If you know the exact density of your media, you can enter it directly into the KNF Mass Flow Rate Calculator instead of selecting a gas or gas mixture.
Mass Flow Rate Calculator FAQ
Each gas has a specific density. This means that the same volume of different gases can have different masses. Therefore, knowing the specific density of the gas is critical to converting from volumetric flow rate to mass flow rate.
This option is intended for gases or gas mixtures of known density. If the specific density is known, entering it directly into the KNF Mass Flow Rate Calculator is an alternative option to specifying all the components of the mixture.
All density values are given in accordance with ISO 8778 at 20 °C (293.15 °K, 68 °F) and 1000 mbar absolute (14.5 psi, 750.06 torr). These parameters are used for all flow rates given in KNF data sheets.
If the application parameters differ from the conditions defined in the Mass Flow Rate Calculator, the results will not accurately reflect reality. For a pressure greater than 1000 mbar and or a temperature lower than 20 °C, the actual mass flow will be greater than shown due to the greater density. For a lower pressure and or higher temperature than the mentioned conditions, the actual mass flow will be lower than shown due to the lower density.
This depends on the application. Whenever the mass of a gas is required, it makes sense to use mass flow. However, if the volume of a gas is the important aspect of an application, it may be more useful to express the flow as a volumetric flow rate.
