Where is current meter used?
The current meter is used to measure water velocity at predetermined points (subsections) along a marked line, suspended cableway, or bridge across a river or stream. The depth of the water is also measured at each point.
What is a pygmy meter?
Product Description. The Pygmy Meter is scaled two-fifths as large as the standard Type AA current meter. It does not have a tailfin assembly and is used only for measuring shallow streams with the wading rod. Its range of operation is 0.1 to 4.9 feet per second (0.03 to 1.5 meters per second).
How does a pygmy meter work?
The precisely balanced Bucket Wheel mounts on a vertical pivot inside a yoke and rotates by water flow. Each rotation of the Bucket Wheel produces an audible click which users monitor either manually with a headset or with digital equipment. Rotation rate is proportional to water velocity.
Is the relation between the stream velocity and revolutions per second of the meter?
The relation between stream velocity and revolutions per seconds of the current meter is called calibration equation. Calibration equation is unique to each instrument. It is determined by towing the instrument in a special tank.
For what purpose is meter used?
A meter is a metric unit of length used worldwide by scientists to measure lengths and distances between objects.
Why do we use current meter?
Current meter: It is the device that is used to measure the velocity of the flow of fluid.
Why is river discharge important?
River discharge is an important control on what happens at the mouth of a river, but the rate of delivery of sediment to the ocean or embayment, which often varies in relation to catchment size, lithology, and climate, is even more significant in terms of the landforms that are built (Milliman, 2001).
What is the flow of water called?
Streamflow
Streamflow, or channel runoff, is the flow of water in streams, rivers, and other channels, and is a major element of the water cycle.
Where is the standard meter kept?
Paris
One of the radical changes was in the measuring of distance, and you can still find one of the first standard meters installed in its original place in Paris. The “mètre étalon” is a small shelf of marble installed beneath the arcade at 36, rue Vaugirard, right across from the Senate at the Palais du Luxembourg.
How many types of current meter are there?
The two types of mechanical current meters, vertical-axis and horizontal-axis, differ in their maintenance requirements and performance because of the difference in their axial alignment.
What is a price type current meter?
The USGS Type AA Current Meteris commonly known as the Price-Type Current Meter and has proven to be a versatile instrument with a long history of accuracy, reliability, and durability. The precisely balanced bucket wheel is mounted on a vertical pivot and is rotated by water flow.
What is universal water current meter?
Universal Water Current Meter is a world recognized instrument. This current meter is suspended in the water using a cable with sinking weight or wading rod and will accurately measure stream flow velocities 0.04 m/s upto 6 meters per second with multiple propellers.
How accurate are price Type AA meters?
Available in headphones or digital styles, the Price Type AA meters offer fast, accurate measurements for all but the lowest flows. The headphone Model generates one click every rotation or one every five rotations of the shaft, according to the contact connection selected.
What is model RK- Universal current meter?
The Model RK- Universal Current Meter is a world recognized designed instrument commonly known as the USGS pattern current meter. More Roorkee, India More Khasra No. – 1080, Salempur Rajputan Industrial EstateRoorkee, Uttarakhand, India