Pulse rate comparison circuit

Details Pulse rate comparison circuit Pulse rate comparison circuit

1974-03-15

1976-05-11

Segal, Robert

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328 44, 328 45, 307233R, 307247R, H03D 1300, H03K 520

Patent

active

039567052

ABSTRACT:
Pulses produced by a stream flowmeter, at a repetition rate proportional to the actual flowrate of a liquid, are compared in a counter arrangement with pulses whose repetition rate is the demand flowrate for this liquid. The circuit produces an alarm whenever the difference between the actual flowrate and the demand flowrate is greater than 6%, or 10%. The alarm is inhibited until after 45 seconds subsequent to startup of the blending system for which the said liquid serves as one component.

REFERENCES:
patent: 3735218 (1973-05-01), Kuhert
patent: 3763380 (1973-10-01), Homer et al.
patent: 3781695 (1973-12-01), Jackson

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