Instructions for assembly
and use
1.1 MID labelling
Standard conditions of operation/measuring rates:
θ: 10°C…180°C
A pair of resistance temperature sensors θ: 10°C…150°C
Flow meter
θ: 15°C…130°C
∆Θ: 3K…170K
∆Θ: 3K…140K
Mechanical environment: M1 (solid installation with minimal vibrations).
Electromagnetic environment: E1 a E2 (house units, light industry, and industry).
Signalling cables from the meter must be lead at a minimum distance of 25 cm from
other installations.
Climatic environment: This product is intended for interior installation only; it must be
installed in a non-condensing environment. The temperature of the environment must
be between 5 and 55°C.
Maintenance and repair:
The keeper is allowed to exchange the communication module, battery, temperature
sensors (a pair), and the flow meter. The temperature sensor pair and flow meter are
verified separately (independent from the calculator), and thus can be exchanged
individually. All repairs require a consequent verification in an accredited laboratory.
MULTICAL® 601, type 67-B/C/D is suitable for the Pt500 temperature sensors
MULTICAL® 601, type 67-A is suitable for the Pt100 temperature sensors
Battery for an exchange: Kamstrup 66-00-200-100
MULTICAL® 601, type 67-A/B/C can be connected to the ULTRAFLOW ® flow meter;
to a unit with an electronic collector; or to a flow meter with a Reed contact.
MULTICAL® 601, type 67-D, must be connected to a flow meter with an active 24 V
impulse output.
No matter what the flow meter type is, the ‘imp/l’ must be the same on both the flow
meter and calculator.
Kamstrup A/S
Industrivej 28, Stilling, DK-8660 Skanderborg
PHONE NO.: +45 89 93 10 00 · FAX: +45 89 93 10 01 ·
1. General information
Before installing the power meter, study this guide carefully. In case the meter is
not properly installed, the Kamstrup Company withdraws all its warranty
Please, notice that it is necessary to meet the following installation conditions:
ULTRAFLOW ® compression stage:
Kamstrup compression stage
of DS temperature sensors:
The compression stage of stainless
steel containers:
PN25/PN40 – according to the type
PN16/PN25/PN40, see the ;
labelling. The flow meter labelling
does not concern the accessories
If the medium temperature exceeds 90°C, we recommend using flange meters, and
mounting the MULTICAL® 601 on a wall.
2. Temperature sensor assembly
Temperature sensors used for measuring supply and return temperatures form a
pair; they must never be separated form each other.
MULTICAL® 601 is usually supplied with mounted temperature sensors. According to
the EN 1434 and OIML R75 standards, their cable length must not be changed. If the
sensors need to be exchanged, the complete pair must always be replaced.
The red marked sensor must be placed in the supply piping. The other sensor has a
blue marking, and must be mounted into the return piping.
2.1 Container sensors
It is best to mount the container sensors into T-shaped branches or 45° Y-branches.
The end of the container must be placed in the direction of flow, and in the centre of
water flow.
Temperature sensors must be inserted all the way to the bottom of the containers. If
a short period of response is required, a non-setting heat conductive paste may be
Insert the plastic case of the sensor cable into the sensor container, and fasten the
cable with the supplied M4 screw, which has an opening for a sealing wire. The
screw is only to be tightened with your fingers. Seal the containers using the seal and
2.2 Short direct temperature sensors
Short direct sensors can be mounted into special ball valves or special T-parts. Both
contain threads up to the R1 size, and a built-in M10 clutch for a short direct sensor.
For assembly into existing heating installations equipped with standard T-shaped
branches, the Kamstrup A/S Company is able to supply brass inserts of R½ and R¾
size, suitable for short direct sensors.
Short direct sensors can also be installed directly into all ULTRAFLOW® machine
versions, with G¾ and G1 threads, on the flow parts of the meter. Fasten the brass
sensor inserts lightly (to ca 4 Nm), using a 12 mm wrench, and seal the sensors with
seal and wire.
3. Information ‘E’ codes
MULTICAL® 601 continuously monitors a range of important functions. In case of
serious damage in the measuring system or installation, an ‘Info’ note appears on the
display. The information code can be read by pressing and holding the left top button,
until the ‘Info’ note shows up on the display. The information code only appears if
there is an error.
No error
Supply voltage disconnected
T1 temperature sensor out of the measuring range
T2 temperature sensor out of the measuring range
T3 temperature sensor out of the measuring range
Cold water system leak
Heating system leak
Heating system crack
Time of
1 to 10 min.
1 to 10 min.
1 to 10 min.
24 hrs
24 hrs
Ca 120 sec
4. Assembly of the flow section
Before the assembly of the flow section, carefully wash the system and remove
protective lids (plastic diaphragms). The correct flow meter position (in supply and
return piping) is shown on the label of the MULTICAL® 601 front. The direction of the
flow is marked with an arrow on the side of the flow meter.
Pipe union and sealing must be mounted as given in the picture. ULTRAFLOW ® does
not require any direct sections in front of and behind the meter; however, to reach the
optimal installation conditions, we recommend the following:
DN15 to DN80
qp 0.6 to qp 40
DN100 to DN250
qp 60 to qp 1000
Min. 5 x DN in front of the meter
Min. 10 x DN in front of the meter
Min. 3 x DN in front of the meter
CEN CR 13582 installation requirements must be followed.
To prevent cavitations, the ULTRAFLOW® operating pressure must be min. 1.5 bar
for qp min. 2.5 bar for qs (4.5 bar for DN80). This requirement is valid for
temperatures up to approx. 80°C.
ULTRAFLOW ® must not be exposed to pressures lower than the pressure of
surrounding environment (vacuum).
4.1 ULTRAFLOW® assembly
ULTRAFLOW ® must be installed in either horizontal or vertical position, or under any
angle in between these two positions.
ULTRAFLOW ® can be rotated up to ±45°, according to the piping axis.
ULTRAFLOW ® must not be mounted
so that the black plastic cover is
pointed either up or down.
Assembly example:
MULTICAL® can be mounted in two positions
using angle bracket.
The 3026-252 angle bracket needs to be ordered
4.1.1 Dampness and condensation
In case ULTRAFLOW ® is installed in a damp environment, it must be turned in a 45°
angle to the piping axis, as you can see below.
If condensation is to be expected
(e.g. in cooling systems), the
ULTRAFLOW ®, which is protected
from condensation must be used.
5. Calculator assembly
The MULTICAL® 601 calculator can be assembled in three different ways:
5.1 Compact assembly
The calculator is mounted straight onto the flow part. If needed, an angle bracket can
be used. After the assembly, the calculator must be sealed with a seal and a wire. If
the condensation is high (e.g. in cooling systems), we recommend to mount the
calculator on a wall.
See also paragraph 4.1 ‘ULTRAFLOW® assembly’.
5.2 Separate assembly on the wall
The bracket for wall mounting enables you to
mount MULTICAL® 601 directly onto a straight wall.
Use the bracket for marking and drilling two holes,
6 mm in diameter, into the wall.
5.3 Assembly in a panel
MULTICAL® 601 can be mounted straight into panels, using the panel assembly set
Kamstrup, no. 66-99-104 (192 x 144 mm).
6. Power supply
MULTICAL® 601 can be powered by a built-in lithium battery; 24 VAC internal supply
module; or 230 VAC internal power module.
Two conductors from the battery or main voltage module are connected to 60 and 61
calculator clips.
When connecting the conductors, polarity must be kept; connect the red
conductor into clip no. 60 (+), and black conductor into clip no. 61 (-).
6.1 Battery supply
MULTICAL® 601 is connected to a lithium battery (cell D). The battery is marked with
installation year, e.g. 2007, and production year.
Optimum battery life is reached if the battery is not exposed to temperatures above
30°C, e.g. by placing it on a wall.
Lithium battery voltage remains constant for most of its life (ca 3.65 V). The
remaining battery capacity thus cannot be determined by voltage measuring.
The battery cannot be, and is not allowed to be, recharged; it also must not be shortcircuited. Empty batteries must be handed in for required liquidation, e.g. to the
Kamstrup Company.
6.2 Main voltage modules
Modules belong to the safety class ll, and are connected with a double-wire
conductor (without grounding) through the calculator cable grommet; the calculator is
placed to the right from the connection base. Use a 5 to 10 mm outer diameter
connecting cable, and secure proper disassembly and assembly of the voltage cable
Max. fuse allowed: 6 A
Assembly regulations must be followed during the assembly.
24 VAC
For example, a 230/24 V transformer,
type 66-99-403 can be used.
230 VAC
This module is used for direct
connection to the electric network.
cannot be supplied from a 24 VDC.
7. Function test
After completion of the electric meter assembly, check its functionality.
Activate water flow through the heating system, by opening heat regulators and taps.
Press top MULTICAL® 601 button, and verify the temperature and water flow figures
on the display.
8. Electric connection
The polarity of T1, T2 and T3 temperature sensors is not
important. When connecting ULTRAFLOW ® and electronic
sensor units, use the colours given for V1 and V2 flow meters.
Flow meters with Reed-contact output need to be connected to
clips 11-10, or 11-69.
Standard heat and cold
Sensor in supply piping
Sensor in return piping
Flow meter in supply or
return piping
Heat measurement
and leak records
measurement in
open systems
Sensor in supply
Sensor in supply
piping (red)
piping (red)
Sensor in return
Sensor in return
piping (blue)
piping (blue)
Flow meter in supply Flow meter in
supply piping
Flow meter in return Flow meter in
return piping
Reference sensor
9. Insert modules
MULTICAL® 601 can be extended with a range of functions, using the insert
modules. Individual modules are briefly described below.
9.1 Data/impulse inputs
Data outputs are used, for example, for
computer connection. The signal is passive and
galvanic ally separated using opto-electric
coupling elements. Transmission to RS232
level requires a connection of data cable 66-99106 (D-Sub 9F) or 66-99-098 (USB), through
the following connection:
NOTE! If data reading is to be compatible with MULTICAL® 66-CDE, a top module
67-06 needs to be used in MULTICAL® 601.
Impulse inputs can be used for connecting both electric and water meters. Please,
bear in mind the maximum impulse frequency and correct impulse codes (l/impulse
and Wh/impulse), which are selected in FF and GG configuration.
65 – 66
67 – 68
Input A
Input B
9.2 M-Bus, type 67-00-04/08/20
M-Bus can be connected into a star-shape, ring, or bus line. According to the M-Bus
Master supply, and total cabling resistance, up tpo 250 meters can be connected.
Cable resistance
Cable capacity
< 29 Ohm
< 180 nF
M-Bus network is connected to clips 24 and
25. The polarity is not important. M-Bus is
supplied with impulse inputs.
NOTE! 67-00-04/08 requires the installation
top 67-06 module.
9.3 Radio/impulse inputs, type 67-00-0A/0B/25/26
The radio module is used for wireless communication over a licence-free radio
frequency; it is available for both interior and exterior antennas.
Further information on the radio module are given in
Radio technical description (5512-012).
Impulse inputs of this module are identical with
the above mentioned modules.
67-00-0A/0B requires the installation
of top 67-06 module. Type 67-00-21 includes
radio and router functions.
9.4 Analogue output
Type 67-00-23, see Assembly guide 5512-369 (DK-GB-DE).
9.5 Lon Works
Type 67-00-24, see Assembly manual 5512-396 (DK) or 55-2-403 (GB).
9.6 Top modules
Type 67-01: RTC (Real Time Clock)
The top module consists of real time clock and backup
When the MULTICAL® 601 is placed in the supply
console, and the voltage is low, current date and
time are transferred from the top module into the
Top module is recommended for applications
which need to have the correct date/time in
permanent memory, as well as time controlled
The real time clock and backup battery represent
standard equipment of all other top modules.
This module does not use screws.
Type 67-02: RTC + ∆ Energy + Hourly data
This top module counts the differences between
heat energy in both supply and return piping, and
hot supply water energy in open systems.
This module also consists of an hourly data
This module does not use screws.
Type 67-06: RTC + compatibility with 66-C
+ 2 impulse outputs (CE and CV)
Top module secures MULTICAL® 601
compatibility with MULTICAL® 66-C, which allows
using most original basic modules for
MULTICAL® 66-C in the MULTICAL® 601.
Moreover, the top module has two independent
impulse outputs for energy (CE) and capacity
(CV). Impulse resolution reflects display data
(defined by CCC-code). E.g.: CCC=119 (qp 1.5):
1 impulse/kWh and 1 impulse/0.01 m3. Impulse
outputs are optically isolated, and have 30 VDC
and 10 mA.
Type 67-07: RTC + M-Bus
An M-Bus can be connected into a star, ring, or
bus line. According to M-Bus Master supply and
cable length/diameter, up to 250 meters with
primary addressing can be connected; even more
can be connected if secondary addressing is
Network conductor resistance: < 29 Ohm
Network conductor capacity:
< 180 nF
Polarity of clips 24 and 25 connection is not
important. Primary addresses usually consist of
the last numbers in a customer number (000250),and can be changed using METERTOOL
Type 67-08: RTC + hourly data recorder + impulse
This top module has two impulse outputs for
capacity and energy, which can be freely
configured. They are suitable for capacity and
energy impulses for heat, cold, or combined
Impulse resolution reflects display data (defined
by CCC-code). E.g.: CCC=119 (qp 1.5):
1 impulse/kWh and 1 impulse/0.01 m3.
Impulse outputs are optically isolated, and have
30 VDC and 10 mA.
Energy (CE) is usually connected to clip 16-17;
capacity (CV) is then connected to clip 18-19.
However, other combinations can be selected
using METERTOOL software, which is also used
to select the impulse duration 32 or 100 ms.
Moreover, this module also includes an hourly
data recorder.
Type 67-09: RTC + ∆ capacity + hourly data
This top module counts the difference between
heat energy in supply and return piping, and hot
supply water energy in open systems.
Figure difference dV=V1-V2.
This module also includes an hourly data
This module does not use screws.