Setting up water meters
17
Low flow alarms
For the low flow alarm, the set point is 0 pulses and consecutive fault samples is 6.
For a low flow alarm to occur there must be 6 consecutive samples of 5 minutes each where the
flow rate is 0. In other words, if there is no water use for 30 minutes (5 × 6 = 30 minutes), there will
be a low flow alarm.
High flow alarms
For the high flow alarm, the set point is 100 and consecutive fault samples is 2.
For a high flow alarm to occur there must be 2 consecutive samples of 5 minutes where the flow
rate is more than 100 gallons.
5 minutes
= 1 sample
0
20
40
60
80
100
120
0
5
10
15
20
40
60
25
35
30
45
50
55
6 consecutive samples
= low flow alarm
2 consecutive samples
= high flow alarm
maximum flow
minimum flow
60 gal.
normal
110 gal.
fault
0 gal.
fault
101 gal.
fault
110 gal.
fault
80 gal.
normal
0 gal.
fault
0 gal.
fault
0 gal.
fault
0 gal.
fault
0 gal.
fault
0 gal.
fault
elapsed time (minutes)
