NOTE
- The Sensus iPerl meter locks its forward direction based on volume, not time (25L for DN15, 40L for DN20, 63L for DN25–40). Once this threshold is reached, any opposite flow triggers a Reverse Flow Alarm.
- Real-time flow rate readings on the LCD are in setup mode for the first 4 hours after water detection. Accurate live flow display starts after 4 hours, though total volume counting begins instantly.
- Advanced diagnostics and leak alarms activate 4 hours after direction locking to avoid false triggers during line flushing.