Universal Water Current Meter - Metal/plastic, 25kg | High Accuracy, Government Calibration, Easy To Use, Durable & Portable Design, Wide Measurement Range

The Model RK-04 Universal Current Meter is a world recognized designed instrument commonly known as the USGS pattern current meter. This current meter is suspended in the water using a cable with sounding weight or wading rod and will accurately measure streamflow velocities from 0.1 to 33 feet per second (0.03 to 10 meters per second) with multiple propellers. The Model RK-04 Current Meter consists of a streamlined body which houses the sensing mechanism, a sealed Hall Effect sensor, and the horizontal axis propeller shaft which has a permanent magnet mounted such that each rotation of the shaft produces a pulse from the sensor. The pulses are conducted through a lead to the surface where they are counted by a Current Meter Counter, Direct Velocity Logger/ Indicator and DischargeTab. The velocity of the stream is proportional to the rotations of the propeller. Each Model RK-04 is provided with a calibration certificate and rating table. (calibration done by the government department).