Explanation of the criteria for classification and numbering of components     C79.2.07
(JUN 00)
Explanation of the dates on the component's description



1.   Purpose and objectives

     To measure the speed of running water in rivers, lakes, water channels.

2.   Description

     The Electro-magnetic Water Current Meter is a small-sized portable current meter without any moving parts. The Faraday's law of electromagnetic induction is applied.

     The instrument can measure currents in the range 0m/s-5m/s.

3.   Input

     Actual water movement.

4.   Output

     Digital data display.
     Analog signal...0mA-1mA DC.

5.   Operational requirements and restrictions

     - If measuring at a site where there are large quantities of plastic, paper, garbage or seaweed in the
       water, make sure that the sensor does not come in contact with these items.

     - Supply regulated electricity.

6.    Form of presentation

      A catalogue and instrument specifications are available.

7.    Operational experience

      About 20 sets were installed in Japan in 1999.

8.    Originator and technical support

      Yokogawa Denshikiki Co.,Ltd.

9.    Availability

      From the HOMS National Reference Centre for Japan.

10.   Conditions on use

      Hardware is for sale.


(First entered: 01 FEB 93

Last updated: 21 APR 00)