Tag: water sub-metering
Being extremely straightforward to operate and maintain, a turbine water meter is in service across the globe as a consistent and the most reasonably priced way to attain precise flow measurement. These are the meters that are designed to get the most out of throughout and curtail pressure drop, keep up high flow rates over an extended flow range and provide pulsation output which linear to the rate of flow.
With the help of turbine water meters, the monetary measurement improbability can even be lessened by delivering high-frequency pulse resolution to account for minute increments of the flow rate.
How it Works
Theory of operation
A turbine flow meter is brought into play for volumetric total flow and/or measurement of flow rate. It has also got a comparatively uncomplicated working principle. While fluid runs through the turbine water sub-metering solution, it inflicts upon the blades of the turbine that are free to take turns about an axis alongside the center line of the turbine covering.
The angular (rotational) speed of the turbine motor is directly proportional to the fluid speed running through the turbine. The resultant output is taken by an electrical pickoff mounted on the body of the flow meter.
The output rate of the pickoff is proportional to the rate of flow. A most important benefit of the turbine water meter is that each electrical pulsation is even proportional to a small incremental volume of flow. This incremental output is digital in form, and as such, can be totalized with the utmost error of a single pulse irrespective of the volume gauged. The rimmed rotor progresses pulse resolution, especially in larger line size meters.
The expanding blade hanger assembly of the turbine flow meter holds the turbine rotor in position with the fluid flow. The position of the turbine blades to the stream administers the angular speed and the output rate of recurrence of the meter. Flow imposing upon the blades leads the rotor to rotate at an angular speed that is proportional to the rate of flow.
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