Additionally, mass flow measurement is recognized as offering more reliable, added accuracy, and better repeatability data than volumetric flow methods. There is also the added computation required to convert the volumetric flow to mass flow. When using volumetric meters, acquiring and installing additional equipment for temperature and pressure correction is the added expense.
There are some distinct advantages of using mass flow meters over volumetric meters. However, weight changes with gravity, but as long as we’re dealing with Earth’s applications, gravity is the same, which won’t impact mass flow. One of the advantages is that when measuring mass flow, the mass or weight does not vary when changing temperature or pressure. Mass flow rate is the amount of a mass moving through an instrument over time, so the unit of measure is mass (or weight) per unit of time and expressed as pounds/hour or kilograms/second or in some similar way. Mass is how much matter there is in a substance and is often expressed in weight (grams, kilograms, tonnes, ounces, or pounds). Have questions on how thermal mass flow meters can benefit you? What is the mass flow rate? The thermal mass flow meter measures gas mass flow in industrial applications. Additionally, when increasing pressure, the volume measurement reduces.įor this reason, when measuring gas using a volumetric flow meter, temperature and pressure measurement are required, along with the gas density, to convert volumetric flow to mass flow.
If the volume is fixed, the pressure will increase when the temperature rises. When heating gas, the molecules bounce off each other, the gas will expand, and the same amount of gas will now have a different space (i.e., Assuming it is not a fixed volume). Standard units of measurement for volumetric flow rate are meters 3 /second, milliliters/second, or feet 3/hour. Volumetric flow is the measure of a substance moving through a device over time. Volume is a three-dimensional measure of the area a substance occupies. It is used in residential and light commercial billing applications for utility companies.
Let us know how we can help! What is the volumetric flow rate? The diaphragm meter is a positive displacement meter and measures volumetric gas flow. When comparing volumetric flow rate to mass flow rate, some distinct advantages for using thermal flowmeters, which measure mass flow rather than a volumetric flow, emerge.
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