ALTOBELLI, DAVID E.,BEAVIS, RUSSELL,GRAY, LARRY B.,HOWLETT, DAVID J.,KANE, DEREK G.,LANIGAN, RICHARD J.
申请号：
CA2978923
公开号：
CA2978923C
申请日:
2004.09.27
申请国别(地区):
CA
年份:
2020
代理人:
摘要：
A device to meter -fluid comprises a fluid reservoir and an acoustic volumesensorcomprising a housing containing a first volume and defining a second volume. Aprintedcircuit board disposed within the housing defines the first volume andcomprises anacoustic source and microphones acoustically coupled to the volumes. Aprocessor is incommunication with the acoustic volume sensor and is configured to meter fluidoutput fromthe device.
