Zenner EDC – Electronic Data Capture Modul Manuale Utente Scaricare il pdf (Pagina 14)

Leakage detection:

If over a period of 24 h (96 quarter hour values)

the ow value is never zero, than this indicates a

leak. The EDC module sets corresponding bits.

If the ow rate remains zero during one quarter of

an hour (before reaching 96 quarters of an hour

with no ow) the algorithm restarts.

If 96 quarters of an hour were running with ow,

leakage remains set until during 8 quarters of an

hour in a row the ow 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

(blockade) is detected. The blockade deemed to

be revoked if a meter reading difference of > 10

liters occurs in a quarter of an hour.

Meter oversized detection

Meter is oversized when the ow rate never ex-

ceed 0,1*Q3 (10% of Q3).This is averaged over

a 15-minute period. It is counted how many times

the ow rate of 10% of Q3 is not achieved. If the

ow rate is not reached after 30 days “meter over-

sized” is detected.

If once a ow rate of> 10% from Q3, averaged, is

reached by a quarter of an hour, the detection is

permanently disabled and the status "meter over-

sized" deleted.

The event memory stores the date and time of the

event.

Meter undersized detection

If the ow rate is continuously higher as Q3 (per-

manent ow) over a 6-hour period, this indicates

an undersizing of the meter and the message

“meter undersized” will be detected. This is aver-

aged over a 15-minute period.

The event memory stores the date and time of the

event.

Pipe burst detection

For EDC modules with M-Bus and Pulse: “Pipe

burst” is detected when the ow rate has exceed-

ed 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.

Reverse water ﬂow detection

(wrong assembly)

If after reinstalling, the EDC module detects that

the meter is running backwards each ¼ hour for

48 hours , reverse water ow is detected (wrong

assembly). If the meter runs forward for 4 hours,

the message shall be considered as nished.

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