8. Smart Metering functions (only valid for wM-Bus
PDC)
The smart functions are only valid if the PDC module
has been connected to a water meter with pulse
output and the appropriate nominal flow (Q3) of the
water meter has been selected.
Self-monitoring:
The module has an integrated battery status moni-
toring.
Leakage detection:
If over a period of 24 h (96 quarter hour values) the
flow value is never zero, than this indicates a leak.
The PDC module sets corresponding bits. If the flow
rate remains zero during one quarter of an hour (be-
fore reaching 96 quarters of an hour with no flow)
the algorithm restarts.
If 96 quarters of an hour were running with flow,
leakage remains set until during 8 quarters of an
hour in a row the flow remains zero. The event
memory stores the date and time of the event.
Meter Stop detection (blockade):
If no meter progress will be detected by the EDC
module over a period of 4 weeks, meter stop (block-
ade) is detected.
The blockade deemed to be revoked if a meter read-
ing difference of > 10 liters occurs in a quarter of an
hour.
Meter oversized detection
Meter is oversized when the flow rate never exceed
0,1*Q3 (10% of Q3). This is averaged over a 15-min-
ute period. It is counted how many times the flow
rate of 10% of Q3 is not achieved. If the flow rate
is not reached after 30 days "meter oversized" is
detected.
If once a flow rate of > 10% from Q3, averaged, is
reached by a quarter of an hour, the detection is per-
manently disabled and the status "meter oversized"
deleted. The algorithm can be restarted via opto
head.
Meter undersized detection
If the flow rate is continuously higher as Q3 (perma-
nent flow) over a 6-hour period, this indicates an
undersizing of the meter and the message "meter
undersized" will be detected. This is averaged over a
15-minute period.
The event memory stores the date and time of the
event.
Pipe burst detection
"Pipe burst" is detected when the flow rate has
exceeded a given value (> 30% of Q3) during a
30-minute period. This is averaged over a 15-minute
period.
The event memory stores the date and time of the
event.
9. Disposal
This device contains a non-removable and non-
rechargeable lithium battery.
Batteries contain substances, which could harm the
environment and might endanger human health
if not disposed of properly. To reduce the disposal
quantity so as unavoidable pollutants from electrical
and electronic equipment in waste, old equipment
should be reused prior or materials recycled or
reused as another form. This is only possible if old
equipment, batteries, other accessories and packag-
ing of the products are returned to the manufacturer
or handed in at recycling centers. Our business
processes generally provide that we or the specialist
companies we use take old devices including
batteries, other accessories and packaging material
back with us after they have been replaced or at the
end of their useful life and dispose of them properly.
Insofar as no other contractual arrangement has
been made in this respect, your local or municipal
authority or the local waste disposal company can
give you information relating the collection points
for your used equipments. ZENNER will always
ensure correct disposal.
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