MULTICAL®
403
78
Kamstrup
A/S
∙
Technical
description
∙
5512
‐
1689_B1_GB_03.2017
In
case
of
failing
temperature
sensor
or
flow
measurements
counting
stops
in
the
registers,
which
are
influenced
by
the
error.
Furthermore,
the
displayed
reading
in
question
will
include
lines.
t1
error
t2
error
Flow
error
t1
inlet
Display
‐ ‐ ‐
t2
outlet
Display
‐ ‐ ‐
t
(t1
‐
t2)
Display
‐ ‐ ‐
Display
‐ ‐ ‐
Flow,
V1
Display
‐ ‐ ‐
Power,
V1
Display
‐ ‐ ‐
Display
‐ ‐ ‐
Display
‐ ‐ ‐
E1
No
counting
No
counting
No
counting
E3
No
counting
No
counting
No
counting
E8
No
counting
No
counting
E9
No
counting
No
counting
V1
No
counting
A1
No
counting
No
counting
No
counting
A2
No
counting
No
counting
No
counting
7.2
Measurement
of
the
coefficient
of
performance
(CP)
of
a
heat
pump
In
houses
with
heat
pumps
with
an
output
it
is
expedient
to
measure
both
the
released
thermal
energy
and
the
gained
electrical
energy,
based
on
which
the
coefficient
of
performance
(COP
or
CP)
can
be
calculated.
COP
is
the
abbreviation
of
”Coefficient
Of
Performance”.
The
calculation
is
based
on
simple
proportional
numbers
between
calculated
thermal
energy
(E1)
and
electrical
energy,
which
is
measured
via
pulse
input
B
(Input
B):
1
Electrical
energy
(Input
B)
is
always
registered
in
kWh,
whereas
thermal
energy
(E1)
is
either
registered
in
kWh,
MWh
or
in
GJ
depending
on
the
selected
B
‐
code.
No
matter
which
unit
you
choose
the
meter
calculates
CP
correctly.
The
CP
value
is
displayed
with
one
decimal
and
is
a
value
in
the
interval
0.0…19.9.
The
CP
value
can
be
displayed
as
a
current
value,
a
monthly
value
or
a
yearly
value.
In
addition
the
averaging
period
of
the
current
CP
‐
value
as
well
as
the
current
power
measured
at
input
B
can
be
displayed.
Current
CP
is
averaged
over
a
number
of
days
and
nights
determined
by
the
meter’s
configuration.
The
averaging
period
can
be
selected
in
the
interval
5…30
days
and
nights.
The
averaging
period
is
set
at
7
days
and
nights,
unless
otherwise
stated
by
the
customer.
Note:
If
data
of
E1
or
input
B
are
missing
for
a
logging
period,
current
CP
is
displayed
as
0.0
until
the
data
basis
is
sufficient.
The
monthly
values
are
calculated
as
the
average
of
a
full
month.
The
month
is
determined
by
the
selected
target
date.
The
yearly
values
are
calculated
as
the
average
of
a
full
year.
The
year
is
determined
by
the
selected
target
date.
