TEST INSTRUMENTATION” make Vertical Axis-Cup Type Water Current Meter is used to measure Velocity of water flow directly in m/s. The spindle carrying the cup wheel freely rotates in the pivot assembly. The magnet and reed switch assembly produces one pulse per rotation. The rotation of the Water Current Meteris sensed by sensor & gives pulsed output signal. As per IS: 3910-1992, the Cup type Water Current Meter employs a bucket wheel assembly that is mounted upon a shaft and rotates in response to fluid flow, generating a signal that is proportional to the fluid flow velocity. The current bucket wheel assembly is made of plated brass. It employs six hollow conical cups that are handformed from sheet metal and individually soldered to a brass, star-shaped frame. The finished unit is then plated. The frame is shaped so that a strut connects the apex of each cup to the outer diameter of the following cup around the frame. The Cup type Water Current Meter can be suspended by means of a Fish weight (sold extra) wading a stream, or by a cable and wading rod from an overhead structure. A tailpiece assembly assures proper alignment of the meter to water flow when suspended by a cable. Velocity is determined by counting the number of revolutionsof the bucket wheel over a given period of time. Revolutions can be monitored by Digital Rev / Time Counter (RTC-K13) (Sold Extra) or with the help of “Virtual” make Water Velocity Logger (DVI-K13) (Sold Extra) by configuring the logger with calibration equation A standard rating table can be provided (chargeable extra) toconvert propeller revolutions to stream velocity in Metric units (meters per second). Standard system comes withspare parts, instrument oil, cleaning cloth, screwdriver and a rugged carrying case.