All-Electronic Counter/Timer for Current Meters

Fisher, H.D. and Bondurant, J.A. (1974) All-Electronic Counter/Timer for Current Meters. Transaction of the ASAE. 17(3):412-413.

PDF 288.pdf Download (108kB)

Abstract

CUP and propeller type current meters
originally required an operator
to count contact closure noise using earphones.
Commercial counters then became
available using an electromechanical
readout. These counters have problems
because either the points in the
current meter head carry the current to
drive the counter which results in contact
burning, or there is an intermediate
relay between the points and the
counter which introduces another
source of possible mechanical failure.
The timebase on these units is usually a
stopwatch which must be controlled by
the operator and has no direct electrical
control upon the operation of the
counter. The watches are delicate
mechanical devices subject to wear and
breakage.

Item Type:	Article
NWISRL Publication Number:	0288
Subjects:	Research methodology Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:51
Last Modified:	16 Feb 2017 21:09
Item ID:	260
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/260