MULTICAL®
603
46
Kamstrup
A/S
∙
Technical
description
∙
5512
‐
2029_A1_GB_06.2017
3.2.8
Leakage
limits
(V1,
V2)
>M<
MULTICAL®
603
can
be
used
for
leakage
monitoring
when
two
flow
sensors
are
connected
to
MULTICAL®
603
on
the
inputs
V1
and
V2.
Note
that
it
is
only
possible
to
connect
two
flow
sensors
on
the
calculator
types
603
‐
E/F.
See
the
type
number
overview
in
paragraph
3.1.
The
M
code
defines
the
leakage
limit,
i.e.
the
sensitivity
of
the
leakage
monitoring.
If
a
leakage
is
detected
in
the
system,
an
info
code
indicating
leakage
or
burst
is
activated,
depending
on
the
size
of
the
leakage.
The
leakage
search
is
based
on
a
difference
in
mass
(
Δ
Mass)
between
the
calculated
mass
of
V1
and
V2,
respectively.
The
calculation
of
this
mass
difference
is
performed
over
24
hours,
the
response
time
of
the
info
code
indicating
a
leakage
thus
being
24
hours.
The
burst
search
is
based
on
a
difference
in
flow
of
V1
and
V2,
respectively.
The
burst
search
is
performed
over
a
period
of
120
s.
Read
more
about
these
info
codes
in
the
info
code
overview
in
paragraph
7.7.
The
sensitivity
of
a
leakage
can
be
adjusted
via
the
M
‐
code,
whereas
the
sensitivity
of
a
burst
is
clearly
defined.
This
also
appears
from
the
table
of
the
M
‐
code
below.
It
is
possible
to
detect
leakages
down
to
15
kg/h
through
the
connection
of
the
two
flow
sensors
of
qp
1.5
m³/h.
Both
info
codes
for
leakage
and
burst
can
be
deactivated
via
the
M
‐
code
(M
=
0).
Leakage
limits
(V1,
V2)
M
‐
code
Leakage
Burst
No
active
leak
search
No
active
burst
search
0
Δ
Mass
≈
>
1.0
%
of
qp
+
20
%
q
Δ
flow
>
20
%
of
qp
1
Δ
Mass
≈
>
1.0
%
of
qp
+
10
%
q
Δ
flow
>
20
%
of
qp
2
Δ
Mass
≈
>
0.5
%
of
qp
+
20
%
q
Δ
flow
>
20
%
of
qp
3
Δ
Mass
≈
>
0.5
%
of
qp
+
10
%
q
Δ
flow
>
20
%
of
qp
4
Permanent
operational
monitoring
Leakage
monitoring
can
with
advantage
be
extended
to
include
permanent
operational
monitoring
as
it
just
requires
the
installation
of
a
set
of
three
sensors
instead
of
a
sensor
pair.
In
Denmark,
for
example,
the
permanent
operational
monitoring
reduces
the
number
of
random
samples
to
three
meters
per
random
sampling
lot,
regardless
of
the
size
of
the
measuring
lot.
Read
more
in
the
installation
guide
for
permanent
operational
monitoring
(Kamstrup
guide
5511
‐
730_DK).
The
purpose
of
these
instructions
is
to
provide
caretakers,
installers
and
consulting
engineers
with
the
information
needed
about
Kamstrup's
leakage
monitoring
system
and
permanent
operational
monitoring.
0
20
40
60
80
100
120
140
160
180
0
150
300
450
600
750
900
1050
1200
1350
1500
Sensitivity
(
∆
flow
≈ ∆
Masse)
[l/h
≈
kg/h]
Average
flow
per
day
(q)
[l/h]
Leakage
limit for
qp
1,5
m³/h
M
‐
kode
=
2
(1,0
%
af
qp
+
10
%
q)
