Measuring and recording apparatus

Details Measuring and recording apparatus Measuring and recording apparatus

1981-05-18

1985-04-23

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

346 33R, G01D 900, G01D 1516

Patent

active

045132445

ABSTRACT:
A measuring and recording apparatus for testing the operation of a home electrical appliance and the like comprises a multiscale electrical current recorder associated with a current probe for connection to a circuit in which the current value is to be monitored. A digital temperature meter associated with a digital display has memory means operable to store the temperature level responsive to a predetermined event, i.e. a maximum value of the temperature, and with an outside temperature probe. Electronic circuit means render the recorder operative to record the current value only responsive to detection of a current above a predetermined level by said current probe.

REFERENCES:
patent: 3436732 (1969-04-01), Charters
patent: 3950759 (1976-04-01), Ziegenfuss
patent: 4318276 (1982-03-01), Sato

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