Accession Number : AD0689456

Title :   AN ELECTRONIC TOTALIZER FOR CURRENT METERS,

Corporate Author : IOWA UNIV IOWA CITY IOWA INST OF HYDRAULIC RESEARCH

Personal Author(s) : Glover,John R.

Report Date : MAY 1969

Pagination or Media Count : 11

Abstract : Current meters of the Price (cup) and propeller types will continue in the foreseeable future to be the most widely used instrument for measurement of velocities in natural streams and rivers. To provide better resolution and reliability of the meter output, magnetic dray-reed switches are now frequently being used as the contact closing device in these current meters. However, the counting rates at high velocities cannot be audibly discriminated and accurately totalized by the operator; thus, an electronic totalizer was required in order to realize the full potential of these improved switches. The battery-operated totalizer consists of a pulse shaping network, three decade-decoder-display units, and switches for testing and operating. Integrated circuits are employed to minimize size, and the display intensity has been adjusted to be visible in indirect sunlight. (Author)

Descriptors :   (*FLOWMETERS, *DIGITAL RECORDING SYSTEMS), COUNTING METHODS, INTEGRATED CIRCUITS, DISPLAY SYSTEMS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE