Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1994-12-09
1996-01-16
Raevis, Robert
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
246249, 324226, 324232, G01N 2782
Patent
active
054838169
ABSTRACT:
An adjustable scanning range is provided for vehicle-activated measuring equipment of the type which includes receiver coils positioned on opposite sides of a transmitter such that voltages induced in the received coils from the transmitter are altered as the vehicle passes, the measuring occurring through the application of the induced voltages to a comparison circuit. Altering the input(s) to the comparison circuit by a constant voltage value allows the scanning range to be adjusted.
REFERENCES:
patent: 2973430 (1961-02-01), Pelino
patent: 3016457 (1962-01-01), Brown et al.
patent: 3721859 (1973-03-01), Blanyer
Frauscher Josef
Nayer Wolfgang
Raevis Robert
VAE Aktiengesellschaft
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