| 摘要 |
A volumetric liquid metering device has a meter chamber for receiving up to a predetermined volume of liquid, an inlet conduit for directing liquid into the meter chamber, a volumetric meter to indicate when the predetermined volume has entered, and a discharge conduit operable in response to a signal from the volumetric meter. The device can have a pair of coupled meter chambers, one b being filled as the other discharges. Valves control ingress and egress of liquid from the meter chambers, and alternate between chambers in response to a signal from the volumetric meter.
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