multical® 6m2
Installation and User Guide
MULTICAL® 6M2
MULTICAL® 6M2
Designations
Permissible operating conditions / measuring ranges
Calculator q:-40 °C..…140 °C
DΘ:3K…170K
Temperature sensor pair
q:-40 °C..…140 °C
DΘ:3K…140K
Mechanical environment
M1 (fixed installation with minimum vibration).
M2 (significant or high level of vibration and shock).
Electromagnetic environment
E1 and E2 (domestic/light industry and industry). The meter’s signal cables must be drawn at min.
25 cm distance to other installations.
Climatic environment
Must be installed in environments with non-condensing humidity as well as in closed locations
(indoors). The ambient temperature must be within 5…55 °C.
Maintenance and repair
The district heating supplier can replace communication module, battery and temperature sensor
pair. The flow sensor may also be replaced, but must be suitable for mixed fluid applications and
possible sub-zero temperatures.
MULTICAL® 6M2, type 6M2-G/H must be connected to a temperature sensor pair type Pt500.
MULTICAL® 6M2, type 6M2-G can be connected to flow sensor type electronic pick-up or flow sensors with reed switch output.
MULTICAL® 6M2, type 6M2-H must be connected to a flow sensor with 24 V active pulse output.
Irrespective of flow sensor type, “pulses/litre” must be identical in flow sensor and calculator.
Battery for replacement
Kamstrup type 1606064.
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Kamstrup A/S • 55121600_A2_GB_02.2015
Installation Guide
MULTICAL® 6M2
MULTICAL® 6M2
Contents
1
General information
4
6
2
Mounting of temperature sensors
5
6.1 Connection of electronic pick up or
reed switch units
11
6.2 Connection of units with active pulses11
6.3 Connection example
12
7 Voltage supply of calculator
13
2.1 Pocket temperature sensor pair
5
2.2 Short direct temperature sensor pair 6
2.3 Temperature sensor pair in cooling
applications6
3 Flow sensor
7
3.1 Mounting of flow sensor
3.2 GWF flow sensor
4 Mounting of calculator
7
7
9
4.1 Separate/wall mounting
4.2 Panel mounting
5 Fluid type
9
9
10
5.1 Fluid type code
10
Electrical connection, MULTICAL® 6M2
11
7.1 Battery supply
7.2 Mains modules
8 Testing of function
13
13
14
9
14
Information codes ”INFO”
10 Plug-in modules
15
10.1 Module overview
10.2Module description
11 Setup via front keys
15
15
17
1 General information
Read this guide before installing the meter.
Kamstrup’s warranty obligations do not apply in case of incorrect mounting.
Please note that the following installation conditions must be obeyed:
- Pressure stage Kamstrup
sensor pair type DS:
PN16
- Pressure stage Kamstrup
stainless steel pockets:
PN25/PN40 - depending on type
Note: Please be aware that depending on the flow part it may be recommended to use a flange
meter at high medium temperatures.
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MULTICAL® 6M2
2 Mounting of temperature sensors
The temperature sensors used to measure inlet and outlet temperatures respectively are a
matched sensor pair that must never be separated.
Temperature sensors are usually mounted in MULTICAL® 6M2 from the factory. According to EN
1434 or OIML R75 the cable lengths must not be changed. If the cable lengths are changed it might
result in a measurement error. If necessary, sensors must always be replaced in pairs.
The sensor marked with a red sign is to be installed in the inlet pipe. The other sensor marked with
a blue sign is to be installed in the outlet pipe (see paragraph 6 for further information).
Note: The sensor cables must not be pulled. Be aware of this in case of binding the cables.
2.1 Pocket temperature sensor pair
Preferably, sensor pockets must be mounted in
tee-pieces or in 45° lateral Y-pieces. The tip of the
sensor pocket must be placed in the middle of the
flow.
The temperature sensors should reach the bottom
of the pockets. If a short response time is required,
”non-hardening” heat conducting paste can be
used.
Push the plastic sleeve on the sensor cable into
the sensor pocket and secure the cable by means
of the enclosed M4 sealing screw. Fasten the
screw with your fingers only. Seal the pockets
using seal and locking wire.
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MULTICAL® 6M2
2.2 Short direct temperature sensor pair
The short direct sensors can be mounted in special ball valves or
in special tee-pipes, both with threads up to R1 and built-in M10
union for the short direct sensor.
For mounting in existing installations with standard angle tees
Kamstrup A/S can, furthermore, supply R½ and R¾ brass nipple
fittings for the short direct sensors.
Fasten the sensor’s brass unions lightly (approx. 4 Nm) using a
12 mm face wrench and seal the sensors with seal and locking
wire.
2.3 Temperature sensor pair in cooling applications
Temperature sensors in cooling applications must be mounted
from below as shown in the figure.
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MULTICAL® 6M2
3 Flow sensor
The MULTICAL 6M2 must be used in connection with flow parts compatible with mixed fluids. Flow
parts suitable for mixed fluids are e.g. mechanical and magnetic inductive.
3.1 Mounting of flow sensor
A Recommended flow sensor position.
B Recommended flow sensor position.
C Unacceptable position due to risk of air buildup.
D Acceptable in closed systems. Unacceptable
position in open systems due to risk of air
build-up in the system.
E A flow sensor ought not to be placed immediately after a valve, with the exception of block
valves (ball valve type) which must be fully
open when not used for blocking.
C
B
A
D
E
F A flow sensor should not be placed at the
suction side of a pump.
G A flow sensor ought not to be placed after a
double bend in two levels.
G
F
3.2 GWF flow sensor
GWF volume measuring meters can withstand installations where antifreeze agents are present.
The measuring dynamics are, however, influenced depending on the concentration. With an antifreeze concentration:
1 Below 5 % there is no influence on the measuring dynamics
2 At 30 % the qi value is doubled.
Note: The qi increases between 5-30 %. This degradation takes place proportionally.
3 Above 30 % we do not recommend these meters.
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MULTICAL® 6M2
3.2.1
Mounting of GWF flow sensor
Single jet meters (Unico®) can be installed
in horizontal or vertical pipelines. Horizontal
installation is preferred since it offers superior
measuring dynamics.
Multi jet meters (MTH) can only be installed in
horizontal pipelines. The meter type plate must
always face upwards.
It is recommended to install shut-off valves
before and after the meter, to facilitate the installation and removal of the meter for periodic
inspection and maintenance work.
Pay attention to the direction of flow when installing the meter. An arrow on the meter body
indicates the direction of flow.
Note: The meter should be protected against mechanical jolts or vibration, which could be present
in the installation.
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MULTICAL® 6M2
4 Mounting of calculator
The MULTICAL® 6M2 calculator can be mounted in two different ways:
4.1 Separate/wall mounting
The wall fitting makes it possible to mount
MULTICAL® 6M2 direct on an even wall. Use the
fitting as a template to mark and drill two 6 mm
holes in the wall.
Naturally, wall mounting is ideal when mounting
in condensing environments.
52 mm
4.2 Panel mounting
MULTICAL® 6M2 can be mounted direct in panels and control panels, via Kamstrup’s panel mounting kit, No. 66-99-104 (192 x 144 mm).
Kamstrup A/S • 55121600_A2_GB_02.2015
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MULTICAL® 6M2
5 Fluid type
MULTICAL® 6M2 is compatible with the most commonly used antifreeze liquids, e.g. ethylene glycol, propylene glycol, Tyfocor and Antifrogen.
5.1 Fluid type code
The type of antifreeze liquid and the concentration are freely programmable and thus
MULTICAL® 6M2 can compensate for the unique
specific heat capacity in each application,
ensuring a high accuracy regardless of the
chemical composition or the application.
The fluid type code is a 4 digit code, which
states the fluid type and concentration, for
which the calculator is programmed. The
fluid type code can be viewed in the calculator’s display (reference number 71).
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MULTICAL® 6M2
6 Electrical connection, MULTICAL® 6M2
MULTICAL® 6M2 can be connected to electronic pick up or reed switch units as well as units with
active pulses. How to connect these flow sensors and the temperature sensors is described below.
6.1 Connection of electronic pick up or reed switch units
Flow sensors with reed switch output and electronic pick up units are connected
to terminals 11–10 and 11–69 respectively.
The polarity of temperature sensors T1, T2 and T3 is unimportant.
V1
11
10
SIG
Terminal no.
T1
T2
V1
V2
T3
5-6
7-8
11-10
11-69
51-52
V2
11
69
Standard heat and cooling
measurement
Sensor in inlet (red)
Sensor in outlet (blue)
Flow sensor in inlet or outlet
-
6.2 Connection of units with active pulses
Flow sensors with active pulses are connected to terminals 11B–10B and
79B–69B respectively.
The polarity of temperature sensors T1, T2 and T3 is unimportant.
V1
11B
10B
SIG
Terminal no.
10B
11B
69B
79B
T1
T2
V1
V2
T3
5-6
7-8
11B-10B
79B-69B
51-52
V2
79B
69B
Standard heat and cooling
measurement
Sensor in inlet (red)
Sensor in outlet (blue)
Flow sensor in inlet or outlet
-
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MULTICAL® 6M2
6.3 Connection example
Example of connection of MULTICAL® 6M2 (type no. 6M2-G) and a flow sensor with a reed switch.
The passive contact output of the flow sensor is connected directly to the flow sensor input which
is not galvanically separated. This permits a cable length of max. 10-20 m between flow meter and
calculator.
MULTICAL® 6M2
11
9
10
Example of connection of MULTICAL® 6M2 (type no. 6M2-H) and a flow sensor with active pulses.
The active pulse output of the flow sensor is connected to the galvanically separated flow sensor
input directly. This permits a cable length of up to 100 m between flow sensor and calculator.
MAGFLO
MULTICAL® 6M2
56
57
58
PE
12
10B (69B)
11B (79B)
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MULTICAL® 6M2
7 Voltage supply of calculator
MULTICAL® 6M2 can be powered by a built-in lithium battery or an integral 24 VAC or 230 VAC
mains module.
The cable from battery or mains module is mounted in the calculator’s connector by a two-pole
plug.
7.1 Battery supply
MULTICAL® 6M2 is connected to a lithium battery, D-cell. The battery is marked with installation
year, e.g. 2015, as well as production date.
Optimal battery lifetime is obtained by keeping the battery temperature below 30 °C.
The voltage of a lithium battery is almost constant throughout the lifetime of the battery (approx.
3.65 V). Therefore, it is not possible to determine the remaining capacity of the battery by measuring the voltage.
The battery cannot and must not be charged and must not be short-circuited for more than 2 sec.
Used batteries must be handed in for approved destruction, e.g. at Kamstrup A/S.
7.2 Mains modules
The modules are protection class II. They are connected by means of a two-wire cable (without
ground) through the cable entry of the calculator placed in the right side of the connecting base.
Use connecting cable with 5-10 mm outer diameter and ensure correct stripping as well as correct
mounting of cable relief.
Max. permitted fuse: 6 A.
National regulations for electric installations must be observed.
Isolated linear supply modules
3.6 V
24 VAC supply
61 Black
60 Red
230 VAC supply
97
24 VAC
98
61 Black
60 Red
3.6 V
7.2.1
27
230 VAC
28
24 VAC
For instance 230/24 V transformer,
type 66-99-403, can be used.
230 VAC
This module is used in connection with direct
mains connection.
Note: MULTICAL® 6M2 cannot be
powered by 24 VDC.
Note: External supply must be connected to
the supply module.
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MULTICAL® 6M2
8 Testing of function
Carry out an operational check when the energy meter has been fully mounted. Open thermo regulators and valves to establish flow through the system. Activate the main key of MULTICAL® 6M2
and check that the displayed values for temperatures and flow are relevant values.
9 Information codes ”INFO”
MULTICAL® 6M2 constantly monitors a number of important functions. In case of a serious error in
measuring system or installation, ”INFO” is displayed and an info-code can be read by activating
the main key until the measuring unit says ”INFO”. The info code is only displayed when the error is
present.
Info code
0
1
8
4
32
Description
No irregularities
Supply voltage has been interrupted
Temperature sensor T1 outside measuring range
Temperature sensor T2 outside measuring range
Temperature sensor T3 outside measuring range
Response time
1…10 min.
1…10 min.
1…10 min.
If a number of info codes appear at a time, the sum of info codes is displayed. If e.g. both temperature sensors are outside measuring range, info code 12 is displayed.
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MULTICAL® 6M2
10 Plug-in modules
MULTICAL® 6M2 can be extended by a range of extra functions by means of plug-in modules. The
individual modules are briefly described below.
10.1 Module overview
MULTICAL® 6M2 Communication top module
Type No.
602-0C
Description
2 pulse outputs for CE and CV
Module No.
5550-1163
MULTICAL® 6M2 Communication base modules
Type No.
67-00-20
67-00-24
67-00-66
67-00-67
Description
M-Bus + pulse inputs (VA, VB)
LonWorks, FTT-10A + pulse inputs (VA, VB)
BACnet MS/TP (B-ASC) RS-485 + 2 pulse inputs
Modbus RTU + 2 pulse inputs
Module No.
5550-831
5550-1128
5550-1240
5550-1277
10.2 Module description
10.2.1 2 pulse outputs for CE and CV, type 602-0C
This top module has two configurable pulse outputs, which are suitable for volume and energy
pulses for heat meters, cooling meters and combined heat/cooling meters.
The pulse resolution follows the display (determined by the CCC-code). E.g. CCC=010 (qp 0,6...1,5):
1 pulse/0.1 kWh and 1 pulse/0.001 m³.
The pulse outputs are optoisolated and withstand 30 VDC and 10 mA. Normally energy (CE) is connected to 16-17 and volume (CV) to 18-19, but other combinations can be selected by means of the
PC program METERTOOL, which is also used for selecting the pulse at either 32 or 100 ms.
10.2.2 M-Bus, type 67-00-20 (rev. B1 or higher)
M-Bus can be mounted in star, ring or bus topology. Up to 250 meter points can be connected
depending on the M-Bus Master’s power supply and the total cable resistance.
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MULTICAL® 6M2
Cable resistance
< 29 Ohm
Cable capacity
< 180 nF
The M-Bus network is connected to terminals
24 and 25. The polarity is unimportant.
M-Bus comes with pulse inputs.
10.2.3 Lon Works, type 67-00-24 (rev. A1 or higher)
The LON module is used for transfer of data from MULTICAL® 6M2 either for data reading or for adjustment purposes via the LON bus, which is ideal for i.e. climate control and building automation.
Data is communicated at a high speed which makes it possible to connect many applications to
the same LON network.
Cabling between the LON module and the other LON-nodes is made with a standard twisted pair
cable. The length can be up to 2700 m using bus topology or 500 m using free topology. The LON
module is built up as a separate network node with neuron chip, memory, transceiver and input/
output circuit. The module requires external supply (24 VAC /230 VAC) of MULTICAL® 6M2, battery
supply is not possible.
The LON module collects new data from MULTICAL® 6M2 in a cycle which secures that all data are
updated every 30 seconds.
10.2.4 BACnet®, type 67-00-66 (rev. J1 or higher)
The BACnet® module communicates with BACnet® on MS/TP via RS-485 as a master/slave or
slave device.
The BACnet® module transfers a number of both actual data and accumulated data. Furthermore,
info codes can be transmitted to the BACnet® Controller. The two pulse inputs allow connection
and reading of two additional meters for e.g. water and electricity with pulse output.
10.2.5 Modbus, type 67-00-67 (rev. B1 or higher)
The Modbus base module for MULTICAL® 6M2 ensures simple integration from Kamstrup’s heat,
cooling and water meters into a Modbus based system. The Modbus module communicates as
an RTU (Remote Terminal Unit) slave device on RS-485. The Modbus module transfers a number
of both actual data and accumulated data. The RS-485 port of the Modbus module is galvanically
separated from the meter’s voltage potential, thereby improving the security for smooth operations. At the same time, the risk of influencing the meter due to influences of the RS-485 port is
reduced to a minimum.
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MULTICAL® 6M2
11 Setup via front keys
Date, time and primary M-Bus address can be adjusted by means of the front keys on the calculator’s front.
1 In the display you select the reading you want to change
2 Lift off the calculator top
3 Wait until the meter has shut down (up to 2.5 minutes). Do not press any keys
4 While remounting the calculator top, keep the main key activated
for approx. 8 seconds.
5 The setup menu is now active.
Having activated the setup menu the reading you want to
change is displayed with the rightmost digit flashing:
(in the below example, the ”Date” has been selected):
The value of the flashing digit can be changed by pressing the sub-key
.
The digit is increased by one each time the key is pressed, and passing 9 you start from 0:
When pressing the main-key
the next digit to the right will be flashing:
The active digit flashes and this digit can now be changed by pressing the sub-key
ble to return to the first digit on the right by means of the main key
.
. It is possi-
When the value of the reading has been changed you quit by pressing the main key
ously for approx. 10 seconds.
continu-
It should be checked whether the value is valid for the reading in question. If so, the value is saved
and an “OK” symbol is displayed. If not, the old value is maintained, no ”OK” symbol appears, and
the display reverts to legal reading.
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MULTICAL® 6M2
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User guide
is activated, a new reading appears.
Energy Measurement
MULTICAL® 6M2 functions in the following way:
The flow sensor registers the amount of flow circulating through the system in m3 (cubic
metres).
The temperature sensors placed in inlet and outlet pipes, register the cooling or heating, i.e.
the difference between input and output temperatures.
MULTICAL® 6M2 calculates consumed energy based on volume of the antifreeze liquid and
temperature difference.
Readings
When the main key
Latest target date.
Energy count on latest target
date followed by energy count
on last year’s target date.
Followed by monthly counts.
Latest target date.
The sub-key
displays historical readings and average values.
Four minutes after the latest activation of the main key the meter automatically switches to
consumed energy.
Displays
Consumed energy in kWh,
MWh or GJ.
Fluid type code.
Consumed water.
Volume count on latest target
date followed by volume count
on last year’s target date.
Followed by monthly counts.
Number of operating hours.
Current inlet temperature.
Current outlet temperature.
Current T3 temperature.
Current water flow.
(*)Activate to see this
year’s max. value as well as
yearly and monthly logging
values.
Current water flow of flow
meter connected to V2.
Current heat-flow rate.
(*)Activate to see this
year’s max. value as well as
yearly and monthly logging
values.
Followed by accumulated
water consumption at
inputs A and B and tariff
registers TA2 and TA3.
Totalized water consumption
on input A.
Number of hours with errors.
Date of highest registered flow
this year
The highest registered flow
this year
Followed by monthly max. and
min. counts.
Serial number of equipment
connected to input A.
Followed by yearly and monthly
logging values.
Kamstrup A/S • 55121600_A2_GB_02.2015
Also see interactive user’s guides at www.kamstrup.com.
(*) DDD = 401
The first max. 8 digits of the
customer number.
Current information code.
(Contact your district heating
company if the value differs
from ”0”).
Totalized water consumption
on input B.
Type of top module.
Followed by Top module
secondary address, base module
type and primary and secondary
addresses.
Display test.
Followed by top and base module
types.
The calculator’s serial number.
Followed by program number,
config 1 and 2, software edition
and software checksum.
Target date displayed as month
and day. In this example June 1.
Current date.
Followed by actual time.
The last 8 digits of the customer number. This example
displays customer number
12345678912.
… and then the INFO codes of the
latest 36 events.
Data logger shows date …
Reading of number of INFO code
events.
Serial number of equipment
connected to input B.
Followed by yearly and monthly
logging values.
MULTICAL® 6M2
User Guide
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