I can't tell you what product is best, but here are some of the elements you need to consider in the planning phase:
Selection, location and installation of measuring devices
Data collection and required parameters
Data transmission and validation
Monitoring and analysis of results
Average costs for prep, equipment, installation and training
A magnetic flowmeter will work well. It requires electric power, which can either be provided to the meter site, or a battery powered meter can be used.
What is the purpose of metering water if it's non revenu if it's know much you loose because of leaking well that depend on your cubic meter per day.
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