Supply Water Leakage Protection System type BBU


Supply Water Leakage Protection System type BBU employes flow measurement calculated from the output from a high-resolution pulsing ultrasonic water meter.

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

systemdiagram BBU


PSALM® is a data processing method using the flow spectrum to dynamically calculate discharge, so that this may decline when flow reduces. Thereby in a given installation operation will be possible at a lower alarm limit or, given an alarm limit, more consumers can be tolerated.

PSALM® can alos compensate to a degree for the data reduction resulting from limitation s in time or volume resolution of a flow meter.


Alarm and Event log

BBU maintains a log of the 250 most recent events and alarms, such as power up/down, alarm and error messages, acknowledgements and automatic resets, key input, control signal changes, state changes and sequence execution.

Jumper log

BBU maintains a log of the 15 most recent setting changes of the internal jumpers.
These logs contribute to the investigation and documentation of actual events.


On delivery, BBU is prepared for attachment to the DanTaet Alarm and Energy Regi­stra­tion System AERS, which conveys leakage alarms to the customer and illustrates events.
AERS transmits alarms in the form of text messages and/or e-mail, and alarms may be remotely acknowledged from the recipient's smartphone, tablet, laptop or PC.

Example: situation view from AERS.



System Capacity and head loss Dimnensions
Nom. Cap.
Qn (m³/h)
 ΣΔp@Qn Equivalent
Kvs (m³/h)
(mvs) (kPa) Flow Meter Valve
BBU-1,6 1,6 2,68 26,8 3,09 ½" x 110 mm ½" x 75 mm
BBU-2,5 2,5 3,41 34,1 4,28 ¾" x 190 mm ¾" x 80 mm


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Download System BBU data sheet in pdf format