SimtoLink: Large video SIMs and small meter SIMs sit in two pools
Night minimum flow and leakage analysis rely on night minimum flow (MNF): the minimum instantaneous or hourly flow observed in a district metered area (DMA) during the low-use period. Ideally, night use by households and most non-household users is close to zero, so the flow mainly reflects background leakage in the network, reservoir seepage, illegal hydrant use, or unregistered use.
Reported curves and leakage detection
IoT water meters, district flow meters, and similar devices report hourly or finer curves over the cellular network. The platform can compare them with the historical baseline, remove seasonal and weather factors, and find new leaks or meter-size drift from district-boundary changes early. An IoT SIM suits a primary path or a backup where a wired private network is missing, and it works with SCADA, DMA, and leakage-management platforms.
Collection frequency and capacity planning
Collection frequency and battery life need to be balanced: ordinary districts can report hourly aggregates, while leakage-sensitive districts can raise the frequency or report more densely in the night window. Time sync, daylight saving time, and meter-replacement events should be tagged on the platform so curve jumps are not misread.
SimtoLink IoT SIMs give terminals wide-area cellular access and support combinations such as private network, public network, multiple APNs, and VPDN, which helps unified authentication, allowlists, and traffic control. In engineering, capacity should be planned from heartbeat, report granularity, and plan tier, with means reserved for weak-network reconnect and log retention.
District scenarios and curve quality
Urban water-supply leakage control, district metering, and water-saving assessment, as well as rural scaled water supply and closed industrial-park networks, can use the same method to find hidden leakage. SimtoLink can provide connectivity for smart water meters and district monitoring terminals.
When this is linked with active leak detection, pressure management, and secondary-supply pump-room monitoring, DMA IDs and data definitions should be unified, and connection-online should be kept apart from curve-quality passed (missing data, frozen values, reverse flow), which helps troubleshooting and KPI statistics.
Source: https://www.simtolink.com/support/sim/nrw-night-flow-analysis.html