Sentinel 2 is an effective two-point controller which, through the inclusion of our innovative modem (capable of connecting via LTE-M, NBIoT, 4G, 3G, 2G) benefits from the latest data logging and telemetry capability to deliver full data reporting and the ability to change settings remotely.
The Sentinel 2 unit switches between high/low pressure, by time or flow, to provide simple, effective pressure optimisation when demand changes. The standard unit also logs input and output pressure, together with flow if a meter is available. The advanced logging capabilities of Sentinel 2 includes Pseudo and fast logging capability.
Two-point control is commonly used when simple switching is sufficient to provide savings and when the network situation is not suitable, or does not justify full control via Pegasus 2.
Time-Based PRV Control – Sentinel 2 is ideal for controlling a PRV to reduce pressure at night, thereby minimising leakage and reducing the risk of pipe bursts during low usage periods. A Flow meter is not essential for this time-based control technique.
Flow-based PRV Control – Sentinel 2 can be used with a Flow input which can be used separately, or to override the time-based control when unexpected demands are detected by the Flow meter.
Data Logging with Alarms and Telemetry – Sentinel 2 can log both upstream and downstream pressures in addition to Flow (similar to triple input Multilog). Advanced telemetry can be used for alarms or to change the Solenoid state from the office.
Failsafe: hydraulic circuit is designed to avoid the main PRV from closing completely, or permitting extra pressure