Supply Water leakage Protection System BI

Operating Principle

Supply Water Leakage Protection System BI performs continuous flow measurements using the attached flow meter with medium-speed pulser.

Two monitoring functions are used together with the calculated flow values for protecting the installation from leakage, as the BI closes the cut-off valve when a leak is detected by either monitor.

Errors with the attached components are propagated as System Error Alarms.


System Diagram BI
1: Control Unit   2: Flow Meter   3: Cutoff Valve

System Capacity and head loss Dimensions
Nom. Cap.
Qn (m³/h)
 ΣΔp@Qn Equivalent
Kvs (m³/h)
(mwc) (kPa) Flow Meter Valve
BI-¾" 2.5 2.5 25 5 ¾" x 130/228 mm ¾" x 77 mm
BI-1" 3.5 2.5 25 7 1" x 160/260 mm 1" x 86 mm
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Download System BI data sheet in pdf format

Download System BI Leaflet in pdf format