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WMBUS Pulse - Guide utilisateur / User guide version V2.2.0
2.2.6 Leaks detection
The product allows leak detection on each count input as shown in the following diagram:
FR
Flow calcu-
No
lation period
reached ?
EN
Calculation of flow
Value <
No
(leakage thres-
hold)
Incrementing the
zero-flow period
counter
The flow rate corresponds to the number of pulses of the flow calculation period divided by the same period. It is expressed in pulses / hour.
The leak detection is performed by analyzing a number of occurrences (configurable by register: S330 and S331) where the calculated flow rate
is less than a leakage threshold (configurable by register: S328 and S329).
The associated leak alarm is stored and transmitted with the next daily frame.
The alarm is automatically deactivated after the daily frame is sent.
The settings associated with this mode of operation are:
•
Enabling and Configuring inputs (register 320)
•
History configuration (register S321)
•
Anti-bounce timer period (register S322)
•
Flow calculation period (register S325)
•
Leak thresholds (registers S328 and S329)
•
Null flow period counters (S330 and S331)
A complete list of the registers can be found in paragraph 3.4.
Product in standby
Yes
Yes
Pulse detec-
No
ted and
validated
Yes
Counting
pulse
Period of
No
24h reached
?
Yes
Value
of the counter
No
of zero flow period
<(counter
leakage)
Yes
Leak alarm activated
in frame 0x30
Send frame 0x30
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