MULTICAL®
403
8
Kamstrup
A/S
∙
Technical
description
∙
5512
‐
1689_B1_GB_03.2017
1
General
description
MULTICAL®
403
is
a
static
heat
meter,
cooling
meter
or
combined
heat/cooling
meter
based
on
the
ultrasonic
principle.
The
meter
is
intended
for
energy
measurement
in
almost
all
types
of
thermal
installations
where
water
is
used
as
the
energy
‐
conveying
medium.
According
to
EN
1434
MULTICAL®
403
can
be
designated
a
"hybrid
instrument",
also
called
a
compact
meter.
In
practice
this
means
that
flow
sensor
and
calculator
must
not
be
separated.
If
flow
sensor
and
calculator
have
been
separated
and
the
seals
are
broken,
the
meter
is
no
longer
valid
for
billing
purposes,
and
the
factory
guarantee
no
longer
applies.
MULTICAL®
403
employs
ultrasonic
measuring
technique,
ASIC
and
microprocessor
technology.
A
single
‐
board
construction
comprises
all
calculating
and
flow
measuring
circuits.
This
makes
the
design
compact
and
rational,
and,
in
addition,
exceptionally
high
measuring
accuracy
and
reliability
is
obtained.
Volume
is
measured
using
bidirectional
ultrasonic
technique
based
on
the
transit
time
method,
proven
a
long
‐
term
stable
and
accurate
measuring
principle.
Through
two
ultrasonic
transducers
the
sound
signal
is
sent
both
with
and
against
the
flow.
The
ultrasonic
signal
travelling
with
the
flow
reaches
the
opposite
transducer
first.
The
time
difference
between
the
two
signals
can
be
converted
into
flow
velocity
and
thereby
also
volume.
Accurately
matched
Pt500
or
Pt100
sensors
measure
inlet
and
outlet
temperatures
according
to
EN
60
751.
MULTICAL®
403
normally
comes
with
a
Pt500
sensor
pair,
e.g.
short
direct
sensors
according
to
EN
1434
‐
2,
or
ø5.8
mm
sensors,
which
fit
Kamstrup
sensor
pockets
in
stainless
steel.
Accumulated
heat
energy
and/or
cooling
energy
can
be
displayed
in
kWh,
MWh
or
GJ,
all
in
the
form
of
seven
or
eight
significant
digits
plus
measuring
unit.
The
display
has
been
specially
designed
with
a
view
to
obtaining
long
lifetime
and
sharp
contrast
in
a
wide
temperature
range.
Other
reading
options
are:
accumulated
water
consumption,
operating
hour
counter,
error
hour
counter,
current
temperature
measurements,
current
flow
and
power
readings.
Furthermore,
MULTICAL®
403
can
be
configured
to
display
monthly
and
yearly
loggings,
target
date
data,
max/min
flow,
max/min
power,
information
code,
current
date
as
well
as
user
‐
defined
tariffing.
MULTICAL®
403
is
powered
by
an
internal
D
‐
cell
lithium
battery
with
a
lifespan
up
to
16
years
or
a
2xA
lithium
packet
with
a
lifespan
up
to
9
years.
Alternatively,
the
meter
can
be
mains
supplied,
either
by
24
VAC
or
230
VAC.
In
addition
to
the
energy
meter’s
own
data,
MULTICAL®
403
can
display
the
accumulated
consumptions
of
up
to
two
extra
meters,
e.g.
an
electricity
meter
or
cold
and
hot
water
meters,
which
supply
a
pulse
signal
to
MULTICAL®
403
via
reed
‐
switch
or
electronic
output.
The
contact
signals
from
the
extra
meters
are
connected
via
the
communication
modules.
A
multiple
plug
placed
behind
the
seal
is
used
in
connection
with
calibration
and
adjustment
during
verification
as
well
as
in
connection
with
communication
modules.
MULTICAL®
403
is
available
with
communication
modules
for
Wireless
M
‐
Bus,
M
‐
Bus
and
RS232.
The
modules
are
available
with
either
pulse
inputs
or
pulse
outputs.
See
paragraphs
11
for
details.
In
designing
MULTICAL®
403
we
have
attached
great
importance
to
flexibility
through
programmable
functions
and
plug
‐
in
modules
(see
paragraphs
3.2
and
11)
in
order
to
secure
optimum
use
in
a
wide
range
of
applications.
In
addition,
the
construction
makes
it
possible
to
update
previously
installed
MULTICAL®
403
via
the
PC
‐
program
METERTOOL
HCW.
This
technical
description
has
been
written
with
a
view
to
enabling
operations
managers,
meter
installers,
consulting
engineers
and
distributors
to
utilize
all
functions
comprised
in
MULTICAL®
403.
Furthermore,
the
description
is
targeted
at
laboratories
performing
tests
and
verification.
The
technical
description
is
currently
updated.
Find
the
latest
edition
at
http://products.kamstrup.com/index.php
