The flow rate of liquids and gases is measured by the use of an instrument that is known as a flow meter. One should take into consideration the familiarity of the working personnel with the device and their experience with calibration when buying a flow meter. One should also consider the maintenance factors such as availability of spare parts and the probability of failure. The cost of installation one should also take into consideration. Because a device is less expensive one should not buy it since this can be the most costly installation. An installation engineer one can consult when buying the flow meters 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. One should also consider the piping and the area the flow meter is to be located.
The fluid characteristics to be considered are the pressure, temperature, viscosity, density and many others. Of how they should interact these properties should have an indication 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. Unless one knows the measurement accuracy, the flow meter’s performance may not be accepted over its full range. One should choose the ones without moving parts over the ones with them when they are purchasing flow meter. A cause of problems and failure are the flow meters with moving parts since they are prone to wear and tear. Also they require clearance spaces for the moving parts that sometimes cause slippage into the flow being measured.
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. Available for in-line and insertion type the magnetic flow meters are. For any waste liquids that are conductive, they are ideal. 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. On the other hand the rotameter is the most used for liquids and gases.A 10-Point Plan for Resources (Without Being Overwhelmed)