Abstract: An electronic reset circuit is provided for a fluid dispenser of the type including a fluid pump and a meter, wherein upon deactivation of the fluid pump, the meter must be reset in order to reactivate the pump and a resetting device normally actuatable for accomplishing meter resetting. The electronic reset circuit comprises a reset control switch actuatable only by a fluid dispenser attendant and an electronic circuit coupled with the resetting device and with the reset control switch for preventing resetting of the meter in response to normal actuation of the resetting device until actuation of the reset control switch by the attendant.

Abstract: An improvement in an acoustic flowmeter of the type utilizing a pair of longitudinally spaced transceivers mounted to a fluid-carrying conduit and an oscillator feeding predetermined alternating signals to the transceivers. The improvement lies in a novel monitoring circuit which comprises a phase responsive circuit for producing signals corresponding substantially only to the phase difference between the signals produced by the respective transceivers for developing an output signal which corresponds in a predetermined fashion to the rate of fluid flow through the conduit.