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Ways of Selecting a Flow Meter A flow meter is an instrument that is used to measure the flow rate of liquids or gases. When buying a flow meter, the familiarity of the working personnel with the device and their experience with calibration is what one should take into consideration. Also one should consider the maintenance factors such as availability of spare parts and the probability of failure. Also one should take into consideration the cost of installation of the flow meter. A device because it is less expensive one should not buy since this can be the most costly installations. When buying the flow meters one can consult an installation engineer just in case there are any flow measurement challenges. The best flow meters basics of selecting are evaluating the nature of the process fluid and the fluid and flow characteristics. Also, one should consider the piping and the area the flow meter is to be located. The pressure, temperature, viscosity, density and many others are the fluid characteristics to be considered. Of how they should interact these properties should have an indication for the flow meter to operate properly. A detailed composition of the fluid should also be there. This is to say that one should indicate whether the fluid has solids and whether they are soft or abrasive or whether they have big or small particles. One should know the required meter range so that they can select the best meter and this is done by identifying the minimum and maximum flows that will have to be measured. Unless one knows the measurement accuracy, the flow meter’s performance may not be accepted over its full range. The flow meters without moving parts one should choose over the ones with them when purchasing flow meters. A cause of problems and failure are the flow meters with moving parts since they are prone to wear and tear. Clearance spaces for the moving parts that sometimes cause slippage into the flow being measured they also require. Included in the different types of flow meters which are there are; rotameters, piston flow meters, paddlewheel, turbine flow meters, ultrasonic flow meters and magnetic flow meters. For in-line or insertion types the magnetic flow meters are available. Ideal they are for any waste liquids that are conductive. The displays are usually integral and an analog output can be used or remote monitoring. For dirty water or waste water the ultrasonic flow meters are also used. The principle of operation employs the frequency shift of an ultrasonic signal when it is reflected by discontinuities in the liquid flow. The most used for liquids and gases on the other hand is the rotameter.Lessons Learned About Meters

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