Laser Doppler Anemometer enables the measurement of instantaneous velocity of a gas or a liquid flowing in a glass walled channel. It offers the non-disturbance advantages of optical methods while affording a very precise quantitative measurement of local flow velocity. This instrument is the most recent advancement in the area of flow measurement especially measurement
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A float technique is a small object lighter than water and thus capable of floating on the water surface. It is usually made of wood or other suitable material. Floats are used to measure the velocity of flow of water in rivers and channels. It is the simplest method in measuring velocity of flow at
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A current meter is used to measure the velocity of flow in the channel. It consists of a wheel or revolving element on which the conical buckets of V-shaped vanes are fixed. So, the current meters are classified on the basis of revolving element such as Cup type current meter. Screw or propeller type current
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