Electricity: measuring and testing – Testing and calibrating electric meters
Patent
1978-05-01
1979-08-07
Rolinec, Rudolph V.
Electricity: measuring and testing
Testing and calibrating electric meters
73 1R, 324130, G01R 138, G01R 102, G01R 3500
Patent
active
041639383
ABSTRACT:
A calibrating device is disclosed for insertion between a control station and its indicators, preferably of the bar graph type, with provisions for establishing accurate reference voltages available at marked jacks for use and specifically for checking the calibration of the indicating elements, and to provide for utilization of one or both indicators as a precision voltmeter for checking the potential of various points in the circuitry. Provisions are also made for bypass plugging in so that the indicators operate in a normal manner as if the calibrator were not present. The normal jacks also provide convenient access to the set-point and variable voltage of the station and facilitate the measuring of these voltages by an external digital voltmeter if desired.
REFERENCES:
allen, W.; "High-Accuracy Calibrator. . .", Electronics, Mar. 3 1977, pp. 104-105.
Karlsen Ernest F.
Moore Products Co.
Rolinec Rudolph V.
Wobensmith, 2nd Zachary T.
Wobensmith, III Zachary T.
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