Manual Aluminum Pygmy Water Current Meter Standard

The water current meter used for determining velocities of flowing water in open channel and streams has been manufactured to meet the requirement of IS:3910.

The water current meter consist of a cup type bucked wheel assembly having six cups mounted on a vertical shaft. This shaft is held vertical in a yoke frame on two pivot points. This yoke frame while holding the moving the moving assembly protect its cups from damage from the floating bodies in flowing water also. The vertical shaft rest on a pivot point at the lower end which is adjustable. the upper end is held in position at a pivot point inside the magnetic contact chamber, which is made water right by a cap. The magnetic contact chamber is equipped with two contact switches the terminal of which are located outside on the body of the contact chamber. Only one switch is used at a time, the other is a spare and stand by and can be used immediately if one goes out of order. The other end of the contact terminals (earth) is the yoke frame itself and so a common earth terminal has been provided on the yoke frame. The bucked wheel rotates in between two pivots in the yoke frame. Each one revolution of the buckets wheel makes a contacts of the magnatic switch in the magnetic chamber which can be recorder on a counter. The yoke frame consist of a tail fin with a balancing weight, which moves in a slot and be adjusted at any place within the slot. The balancing weight is so adjusted so as to keep the current meter horizontal when suspended in water. The tail fin keeps the yoke frame with the bucket wheel to the upstream direction as the tail fin goes to downstream direction with the flow of water. The meter is suspended in water with the help of a suspension flat in deep water and by a suspension rod (wadding rod) in shallow water.