Electricity: measuring and testing – Testing and calibrating electric meters
Patent
1984-04-12
1988-08-23
Karlsen, Ernest F.
Electricity: measuring and testing
Testing and calibrating electric meters
324130, 340637, G01R 1132, G08B 2300
Patent
active
047663707
ABSTRACT:
A system for calibrating an energy meter is provided. The energy meter has a rotor which rotates at an angular velocity generally proportional to the energy input to the meter. A reference transducer receives an energy input for generating a reference signal having a predetermined parameter, such as frequency, generally proportional to the energy input. A test apparatus is responsive to rotation of the rotor to generate a test signal having a predetermined parameter, such as frequency, generally proportional to the angular velocity of the rotor. An error signal generator receives the reference signal and the test signal upon fractional rotation of the rotor and generates an error signal to indicate the amount of error between the frequency of the test signal and a calibration value corresponding to the frequency of the reference signal. The meter is calibrated based on the error signal. A related method is also disclosed for calibrating the meter.
REFERENCES:
patent: 2938165 (1960-05-01), Greig
patent: 2957131 (1960-10-01), Burkhart, Jr.
patent: 3204532 (1965-09-01), Budnick
patent: 3409829 (1968-11-01), Elmore et al.
patent: 3654479 (1972-04-01), Catherin
Levitsky, "A Test Board for Watt Meter Standards", Jul. 1955, p. 605.
Holtz, "Apparatus for Testing A-C Watt-Hour Meters", May 1952, p. 413.
"New Precise Comparison Methods of Testing Watthour Meters", IEEE Transactions of Instrumentation and Measurement, vol. IM-25, No. 3, 1976, by J. Ludmer.
"A Digital Error Indicator for Electricity Meter Testing", Siemens Review XXXI, 1972, No. 11, by Klaus Walter.
"Error Indicator for Energy Meters", Journal of the Institution of Engineers (India), Electronic Eng. Div., vol. 53, Apr. 1973.
Karlsen Ernest F.
Nguyen Vinh P.
The Eastern Specialty Company
LandOfFree
System and method for calibrating an energy meter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for calibrating an energy meter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for calibrating an energy meter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-837574