The flow rate of liquids and gases is measured by the use of an instrument that is known as a flow meter. 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. The maintenance factors such as availability of spare parts and the probability of failure are some factors one should put into consideration. One should also take into consideration the cost of installation of the flow meter. Because a device is less expensive one should not buy it since this can be the most costly installation. One can consult an installation engineer when buying the flow meters just in case there are any flow measurement challenges. The basics to selecting the best flow meters 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 characteristics of the fluid to be considered are the pressure, temperature, viscosity, density and many others. These properties should have an indication of how they should interact for the flow meter to operate properly. There should also be a detailed composition of the fluid. That one should indicate whether the fluid has solids and whether they are soft or abrasive or whether they have small or big particles this is to say. One should know the required meter range and this is done by identifying the minimum and maximum flows that will have to be measured so that one can select the best meter. The flow meter’s performance may not be accepted over its full range unless one knows the measurement accuracy. When one is purchasing a flow meter they should choose the ones without moving parts over the ones with them. Usually the flow meters with moving parts are a cause of problems and failure since the moving parts are prone to wear and tear. They also require clearance spaces for the moving parts that sometimes cause slippage into the flow being measured.
Different types of flow meters are there and they include; rotameters, piston flow meters, paddlewheel, turbine flow meters, ultrasonic flow meters and magnetic flow meters. Available for in-line and insertion type the magnetic flow meters are. For any waste liquids that are conductive, they are ideal. Usually the displays are integral and an analog output can be used or remote monitoring. The ultrasonic flow meters are also used for dirty water or waste water. The frequency shift of an ultrasonic signal when it is reflected by discontinuities in the liquid flow is the principle of operation that is employed. The most used for liquids and gases on the other hand is the rotameter.5 Key Takeaways on the Road to Dominating Tools