Alarm On Plant Loss; Hour Meter Operations - Seneca MyALARM2 Series User Manual

22. ALARM ON PLANT LOSS

The alarm on plant loss generates an alarm in the event of loss (for example plumbing leaks) in a
plant.
The basic concept is that in normal operations, in observation time T, plant flow must be less than
Q for at least the count time t.
MYALARM2 divides observation time T into sub-multiples t and analyses consumption counts on
each of these sub-multiples t.
For example, considering a plumbing plant that supplies 2 utilities. Statistically, during one day
(observation time T = 24 hours) the admitted flow must be <0.1 m3/h (maximum admitted flow
Q=0.1 m3/h) for at least one of the 10 minute t (count time t= 10 minutes).
MYALAM2
HOUR
COUNTER
If this is not the case it means that there is a "parasite" utility in addition to the 2 utilities that
continuously subtracts liquid (especially at night it is improbable that the utilities use water on all
the 10 minute intervals).
Observation time T, count time t and the maximum flow value Q in count time t can be set for the
alarm.
ATTENTION!
- In order to obtain coherent and synchronised values, the alarm on plumbing loss is managed by
the datalogger. Times are thus shared with the logger (acquisition (t) and send (T) times).
-To obtain coherent and synchronised values, the alarm on plumbing loss is managed by the
datalogger and thus the alarm on totalizer increase cannot be simultaneously activated.

23. HOUR METER OPERATIONS

USER MANUAL - MyALARM2 SERIES
WATER SYSTEM
"PARASITE"
USER
60
USER 1
USER 2