USER MANUAL – Z-GPRS2 / Z-LOGGER
66
23.
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.
Z-GPRS2 and Z-Logger divide 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).
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.
CAUTION!
- 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).
PLUMBING PLANT
UTILITY 1
UTILITY 2
“PARASITE”
UTILITY
COUNTER
MYALAM
2
Summary of Contents for Z-GPRS2
Page 8: ...MANUALE UTENTE Z GPRS2 Z LOGGER 8...
Page 72: ...MANUALE UTENTE Z GPRS2 Z LOGGER 72...
Page 165: ...USER MANUAL Z GPRS2 Z LOGGER 73...
