A Guide to Ultrasonic Flow Meters

Flow meters are providing an important service in controlling and monitoring the pressure as well as rate of flow of gases and liquids. Device selection is mostly based on state of liquid, viscosity and presence of particles. Ultrasonic flow meters are one good example which are based on new technology than mechanical as well as pressure based devices.

Ultrasonic meters are made for certain applications. They can work on various kinds of liquids. So long as the speed of sound passes through a liquid is known, particle size is larger than 100um and is less than 10% in particles and concentration is more than 100ppm. The device can work on liquids similar to wastewater, seawater, pure water, chemicals and pure water. These factors are also applicable to Doppler meters. The transit time meters are working on fluids with cleaner flow or perhaps, those having minor particles. Lesser used device is also based on cross correlation which can work best on suspension flow or turbulent gas flow.

Ultrasonic flow meters are used regularly in measuring blood flow rate and even pressure in asthma victims. This ability of calculating flow rate of such a broad range of fluids is what giving them edge compared to pressure and mechanical based devices. The absence of movable parts add to the benefit as lower maintenance and ease of use is achieved. As costly as flow meter s could be, usage in long run turns to be more cost efficient compared to other devices.

Portability can be achieved using ultrasonic devices which is also a clear benefit in applications where heavy and bulky systems can't be used. Wall mounted devices are way better for continuous control and monitoring but, there are some handheld models that can provide the same results so long as the environment is ideal.

In comparison to other kinds of meters, ultrasonic flow meters do not need to be inserted into pipes. As they do not use pistons and several other movable parts, only wavelengths a simple clamp on exterior of pipes is more than enough to get accurate reading. What this mean is, the device do not corrode which saves a lot on the cost of replacement.

There are some pitfalls for using ultrasonic meters aren't enough to base a choice on. Cost though more expensive than some other traditional meters, is balanced by fewer repair needs and low maintenance.  The more important thing to be considered is the inability of using them to measure sludge and several other liquids with numerous and dense particles. This ability however holds true for other kinds of meters from water meters Australia where some are designed to use in clear waters.