3/28/2024 0 Comments Rotameter flow meter![]() ![]() You may find helpful our article, 4 Things to Consider Before Selecting a Gas Flow Meter Technology. If you are looking for an industrial flow meter for natural gas, perhaps one of our other product offerings could be beneficial. Linc Energy Systems does not represent a rotameter line. Differential pressure devices (also known as head meters) include orifices, venturi tubes, flow tubes, flow nozzles, pitot tubes, elbow-tap meters, target meters, and variable-area meters, Fig. While a magnetic float may be available having the meter adapt to machine reading is often challenging. In general, the equipment can be classified as differential pressure, positive displacement, velocity, and mass meters. Taper bore in-line indicators for flow rate. The rotameter’s scale will only be accurate for the specific fluid and conditions where the meter is calibrated. Ideal for high purity or corrosive liquid application, gas and liquid application, air samplers, and medical applications. Because gravity impacts the reading, the meter must be installed vertically. The meter’s housing is glass and is subject to breakage, so it is not a tough flow meter particularly in a process or industrial environment. ![]() The rotameter has an extended measurement range with reasonable accuracy in low and medium rates, low-pressure loss, and is easy to install and maintain. The rotameter is inexpensive and usually highly resistant to thermal shock or chemical action. Needing no external power is particularly beneficial in a hazardous location with flammable gases since there is no power associated with running the meter. The mechanical nature of the rotameter is such that no external power is necessary to run the device and if the float is metal, its position can be transferred to an external indicator and observed remotely. Rotameters are used in process industries as an industrial meter and may monitor gas at plants or in labs or filtration loading. Because the float is gravity-dependent, it is essential to install the meter vertically. Any fluctuation with flow upsets the balance, and the float moves up or down indicative of the flow rate. The float reaches a mechanical equilibrium state when the upward force exerted by the fluid flow is equivalent to the gravitational force. ![]() With liquids, the float rises with buoyancy, but with gases, the float increases with velocity. The height that the float lifts is proportional to the flow rate. The tube is usually glass, while the float is typically ceramic or aluminum. The float raises with fluid flow and pushes down with gravity. The rotameter’s principle of operation involves a float positioned in a tapered tube. It is a variable area meter and provides a simple, precise, and inexpensive indication of flow rates. The rotameter is a traditional gas technology and may be used as an industrial flow meter to measure the volumetric flow rate of fluids in a closed tube. In wrapping up our series on natural gas flow meters, there is one last meter-type worthy of mention, the rotameter. ![]()
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