Kamstrup MULTICAL 602, Technical Description, Page: 59 / 130

MULTICAL® 602
Kamstrup A/S ∙ Technical Description ∙ 5512 ‐ 931_N1_GB_11.2016 59
Example: The curve below illustrates the difference between Mass V1 and Mass V2 in an extract of 60 days before
the leak in a floor heating pipe was the reason for a leak alarm. As will appear from below, there is a fluctuation of
approx.

1 kg/hour in the first 43 days which is a normal fluctuation for installations without leaks.
-2
0
2
4
6
8
10
12
14
16
400 410 420 43 0 440 450 4 60
Number of days
Lea
kage i
n
/h
ou
6.14.2 District heating bursting
Every 30 s the current flow in the inlet pipe is compared with that in the outlet pipe. If the difference at 4 measurings
in a row (120 s) is larger than 20 % of the nominal flow info = 00512 and a "bursting alarm" will be sent via remote
communication.
6.14.3 Cold-water systems
In addition to above functions MULTICAL

602 can be connected to the pulse signal from the cold-water meter of
the house. In this way it can survey the cold-water consumption. A flushing toilet cistern, leaky heating coils in the
water tanks or other leaks will cause that impulses from the cold-water meter are received 24 hours a day.
If MULTICAL

602 does not register e.g. at least one continous hour/day without pulses from the water meter, this
is a sign of a leak in the water system and an alarm will be sent via remote communication.
Cold-water leak search (VA)
N=
Constant leak at no consumption (pulse
resolution 10 l/pulse)
0 OFF
1
20 l/h (½ hour without pulses)
2 10 l/h (1 hour without pulses)
3 5 l/h (2 hours without pulses)
NB: N=2 is a default value in connection with leak surveillance. Higher degree of sensitivity, e.g. N=3 is only
possible if using METERTOOL. Infocodes for leak/bursting are only active when M

0 or N

0, respectively.
6.14.4 Receiving alarm messages
When the meter has registered a leak or bursting it will send an alarm message to a receiving station, where
incoming alarms are handled on the basis of an encoded action pattern that is laid down for each individual
customer, e.g. starting with an SMS message to the customer’s mobile phone. At the same time the utility on duty
receives the message. Regular data readings from MULTICAL

602 to the receiving station/monitoring center ensure
that defective remote readings, if any, are detected.