| Although the term 'area velocity flow meter' may | | | | How this device works is that it measures the level |
| sound rather complicated to some, the basics of how | | | | by transmitting that of ultrasonic pulses through the |
| it works are actually not all that complicated. Basically, | | | | air to the liquid surface, again with an incredible |
| to begin with, an area velocity flow meter works by | | | | accuracy. Furthermore, along with the level sensor |
| continuously measures both the level and velocity of | | | | itself, a submerged Doppler velocity sensor is used in |
| something in order to be able to calculate flow | | | | order to be able to measure the actual water |
| volume in an open channel or pipe, for instance. | | | | velocity. |
| There are several different factors that need to be | | | | Where to Find an Area Velocity Flow Meter |
| understood in regards to how an area velocity flow | | | | If you are curious in regards to where you can find |
| meter works, for instance there is the matter of the | | | | and consequently purchase an area velocity flow |
| ultrasonic sensor, which is installed at the very | | | | meter, then you can at least rest assured in knowing |
| bottom of a pipe or channel, and in order to be able | | | | that there are many options available to you in this |
| to measure the water level, this ultrasonic sensor | | | | regards. One type in particular is that of the AVFM-II |
| works by transmitting ultrasonic pulses which travel | | | | area velocity flow meter, which has the following |
| through the water and then reflect off the liquid | | | | qualities: able to be used for open channels and pipes, |
| surface. | | | | no flume or weir required, totalizer and two |
| This ultrasonic sensor is able to precisely measure the | | | | programmable control relays, and there is also an |
| exact time that it takes for echoes to be able to | | | | optional intrinsically safe sensor included. |
| return to the sensor, and as well, based on the | | | | This device uses that of a submerged ultrasonic |
| speed of sound in water, the actual level is then | | | | sensor in order to be able to continuously measure |
| measured with an incredible accuracy. There is then a | | | | both that of the velocity and the level in the |
| separate down-looking ultrasonic sensor which can be | | | | particular channel. As well, the sensor itself is a |
| used for that of highly aerated or more turbulent | | | | completely sealed ultrasonic unit which has no orifices |
| flow applications, for that matter. | | | | or ports. |