There are a variety of flow meters available depending on the material that needs to be measured and the specific application where it will be used. Depending on the particular type, a flow meter will measure the volume or mass of the liquid, gas or vapours that pass through it. This will either be tracked continuously or taken at intervals over time.
To take this measurement, the flow meter uses three main parts: the primary instrument, the transducer, and the transmitter. The substances being measured pass through the transducer, which tracks the volume or mass per minute. This produces signals which are interpreted by the transmitter to give the final measurement of flow.
Though this is the standard way flow meters work, different types use alternative methods and produce various units of measurement. Some of the most common units of flow measurement include:
- Litres per second (l/s)
- Kilograms per second (kg/s)
- Actual cubic feet per minute (acfm)
- Cubic metres per hour (m3n/h)