| 摘要 |
A water metering system for a concrete mixing truck includes a secure pulsing type cold water meter connected to meter water applied to the mixing drum of the truck. The meter pulses an electrically resettable counter mounted in a secure housing in the cab of the truck. The counter is reset by a key switch mounted in the housing. A manually resettable counter may be mounted to the rear of the truck, to be energized by the meter pulses.
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