What Is An Ultrasonic Flow Meter?
As we know flow meter is a device that measures the rate or quantity of liquid or gas that moves through a pipe. And beside this, an ultrasonic flow meter measures fluid velocity for calculation of gas motion or any other liquid motion along with the time of resonance to reappear. The space between the water surface and sensor’s face resembles to the transit time.
How Does It Work?
After the initial setup, this meter gets its pre-determined space and this space may have a zero level or a specific level in the flume. Along with this primary regulation, the liquid level can be set which will be used for pre-planned discharge equations or well-built tables to produce a flow rate. Ultrasonic sensors don’t have any programmed maintenance, as the sensor is not connected to water.
But this performance might be despoiled by – sensor’s solar heating of the sensor, false echoes, strong wind, foam, steam, and turbulence. For fighting back these problems schemes for controlling proprietary, casting sensor face, sensor sunshades are used for regulating the improvement of an amplifier.
Compatibility of Flume & Ultrasonic Flow Meters
A flume and an ultrasonic flow – a perfect and reliable amalgamation for gauging flows of wastewater. And, if you are thinking of using it, without hesitance you can opt for it. The reason is, arrangement is not so expensive and offers us results with accuracy. The set-up has a special shape with hydraulic device. And this device hastens a flow in an open channel in a way that the flow rate can be fixed by a single level dimension in the flume’s upstream section. Regulation error of flow meter, accuracy of flow meter, flume correctness, installation fault and approach circumstances help to fix the overall accuracy of the system. Apart from a few shortcomings, there are ample gains an ultrasonic flow meter has, especially when flume adds with it. Due to these plusses, the global ultrasonic flow meter market is likely to witness emergence of new avenues through the extended applicability of these meters.
Benefits:
- It is really easy to install an ultrasonic sensor as it does not have any connection with water nor it requires any regular maintenance. Therefore, it is reasonable as per expense.
- Besides these, this sensor does not get affected by any silt, suspended solids, corrosive chemicals and grease in the flow stream.
- Flumes are also easily available according to types -short and long throated, styles- Ramp, Palmer-Bowlus, Parshall and sizes.
Drawbacks:
- While using Ultrasonic flow meters, we have to be very careful as it gets affected by foam, turbulence, wind, steam, floating debris and air temperature gradients easily.
- Next, as the swiftness of sound fluctuates along with air temperature, an ultrasonic flow meter should pay damages for the changes in air temperature. Moreover, sunlight can heat it artificially to influence sensor performance.
- Besides these, Flumes are designed in such a way that it can be leveled from both horizontally and vertically. Though corrections are available for Cutthroat, Parshall and other flumes.
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