Technical Description
MULTICAL® 302
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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Contents
1 General description ............................................................................................................... 6
1.1 Mechanical construction .............................................................................................................................. 7
1.2 Seals ........................................................................................................................................................... 8
2 Technical data ..................................................................................................................... 10
2.1 Approved meter data ................................................................................................................................. 10
2.2 Electrical data ............................................................................................................................................ 11
2.3 Mechanical data ........................................................................................................................................ 12
2.4 Material ..................................................................................................................................................... 13
2.5 Accuracy .................................................................................................................................................... 14
3 Type overview ..................................................................................................................... 15
3.1 Type and configuration overview ................................................................................................................ 15
3.2 Type number composition .......................................................................................................................... 16
3.3 Config. >A-B< .............................................................................................................................................. 19
3.4 Config. >DDD<, Display coding .................................................................................................................... 20
3.5 Energy overview ......................................................................................................................................... 20
3.6 CONFIG >EFGHHMMM< ................................................................................................................................ 21
4 Dimensioned sketches ........................................................................................................ 23
5 Pressure loss ...................................................................................................................... 25
5.1 Calculation of pressure loss ....................................................................................................................... 25
6 Installation ......................................................................................................................... 26
6.1 Installation requirements ........................................................................................................................... 26
6.2 Installation angle of MULTICAL® 302 .......................................................................................................... 27
6.3 Straight inlet .............................................................................................................................................. 28
6.4 Position of calculator ................................................................................................................................. 30
6.5 Operating pressure of MULTICAL® 302 ........................................................................................................ 31
6.6 Mounting in inlet or outlet pipe .................................................................................................................. 32
6.7 EMC conditions .......................................................................................................................................... 33
6.8 Climatic conditions .................................................................................................................................... 33
7 Calculator functions ............................................................................................................ 34
7.1 Measuring sequences ................................................................................................................................ 34
7.2 Energy calculation ...................................................................................................................................... 36
7.3 Application types ....................................................................................................................................... 37
7.4 Combined heat/cooling metering ............................................................................................................... 39
7.5 Max. flow and max. power .......................................................................................................................... 40
7.6 Temperature measurement ........................................................................................................................ 41
7.7 Info codes .................................................................................................................................................. 43
7.8 Data loggers .............................................................................................................................................. 46
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
8 Display functions ................................................................................................................ 48
8.1 Select display loop ..................................................................................................................................... 48
8.2 USER loop .................................................................................................................................................. 49
8.3 TECH loop ................................................................................................................................................... 49
8.4 SETUP loop ................................................................................................................................................. 51
8.5 TEST loop ................................................................................................................................................... 54
9 Flow sensor ......................................................................................................................... 55
9.1 Ultrasound combined with piezo ceramics .................................................................................................. 55
9.2 Principles ................................................................................................................................................... 55
9.3 Transient time method................................................................................................................................ 55
9.4 Signal paths ............................................................................................................................................... 57
9.5 Flow limits .................................................................................................................................................. 57
10 Temperature sensors ........................................................................................................ 58
10.1 Sensor types .............................................................................................................................................. 59
10.2 Coupling for direct sensor ........................................................................................................................... 60
10.3 Installation of direct sensor ........................................................................................................................ 61
10.4 Blind plug for sensor socket ....................................................................................................................... 62
11 Power supply ................................................................................................................... 63
11.1 Built-in A-cell lithium battery ...................................................................................................................... 63
11.2 Built-in 2 x A-cell lithium battery ................................................................................................................. 63
12 Communication ................................................................................................................ 64
12.1 Wired M-Bus ............................................................................................................................................... 64
12.2 Wireless M-Bus .......................................................................................................................................... 65
13 Data communication ........................................................................................................ 67
13.1 MULTICAL 302 Data Protocol ..................................................................................................................... 67
13.2 Optical eye ................................................................................................................................................. 69
14 Test ................................................................................................................................. 70
14.1 Meter modes .............................................................................................................................................. 70
14.2 Test connection .......................................................................................................................................... 72
14.3 Handling different test methods ................................................................................................................. 74
14.4 True energy calculation ............................................................................................................................... 75
15 METERTOOL HCW ............................................................................................................. 76
15.1 Introduction ............................................................................................................................................... 76
15.2 How to use METERTOOL HCW for MULTICAL® 302 ........................................................................................ 77
15.3 Flow sensor adjustment .............................................................................................................................. 81
15.4 LogView HCW ............................................................................................................................................. 82
MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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16 Approvals ......................................................................................................................... 84
16.1 Type approvals .......................................................................................................................................... 84
16.2 The Measuring Instruments Directive .......................................................................................................... 84
17 Troubleshooting ............................................................................................................... 85
18 Disposal ........................................................................................................................... 86
19 Documents ....................................................................................................................... 87
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
1 General description
MULTICAL 302 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
production and initial verification in our factory the meter is treated as three separate units or ”sub-assemblies” (flow
sensor, calculator and temperature sensor pair) but after delivery the units must not be separated unless by an
accredited laboratory.
If flow sensor, calculator or sensor pair have been separated and the seals broken, the meter is no longer valid for
billing purposes. Furthermore, the factory guarantee no longer applies.
MULTICAL
302 employs ultrasonic measuring technique, ASIC and microprocessor technology. A single board
construction comprises all calculating and flow measuring circuits, which provides a compact and rational design 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. Two ultrasonic transducers are used to send sound signals with as well as
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.
302 can be designated a "hybrid instrument", also called a compact meter. During
The temperature sensor type is Pt500 according to DS/EN 60751. Accurately matched Pt500 sensors measure the
temperatures in inlet and outlet pipes. MULTICAL
302 is supplied with a ø5.2 mm Pt500 sensor pair. One temperature
sensor is mounted in the flow sensor from the factory and the other sensor is typically mounted as short direct sensor
in e.g. a ball valve.
The accumulated heat energy and/or cooling energy can be displayed in kWh, MWh or GJ, all in the form of seven
significant digits and measuring unit. The display has been specially designed to obtain long lifetime and sharp
contrast in a wide temperature range.
Other reading options are: accumulated water consumption, operating hour counter, current temperature
measurements, current flow and power readings. Furthermore, MULTICAL
302 can display loggings, target day data,
error hour counter, max. flow, max. power, information code and current date/time.
MULTICAL
302 is powered by an internal A-cell lithium battery with 6-8 years' lifetime or by two A-cells with 12-16
years' lifetime.
MULTICAL
302 is available with communication for either wired M-Bus and/or Wireless M-Bus.
In designing MULTICAL® 302 great importance has been attached to user comfort and compact external
measurements, which makes it suitable for a wide range of applications.
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
®
302. Furthermore, the description is
targeted at laboratories performing tests and verification.
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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1.1 Mechanical construction
MULTICAL® 302
No. Description No. Description
1 Front cover 8 Meter tube assembly
2 Meter electronics 9 O-rings
3 Calculator base 10 Hot brass casing
4 A-cell battery 11 O-ring for temperature sensor
5 Sealing cover for flow sensor 12 Coupling for temperature sensor
6 Transducer assembly with cable 13 Temperature sensor ø5.2 mm
7 Screws for top beam
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
The seals are gently broken using a
The mechanical locks are released by carefully moving
Close-up illustration of locking function being released.
1.2 Seals
1.2.1 LOCK
The meter's front cover and base are assembled by means of a ”locking system” and the case cannot be separated
without breaking the two seals marked LOCK.
IMPORTANT:
only be opened by an accredited laboratory with authorisation to reseal the meter after reverification.
screwdriver.
If the seals have been broken, the meter may no longer be used for billing. Therefore, the case may
the screwdriver towards the centre of the meter.
MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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When the two mechanical locks have been
released, remove the top cover from the
base.
Reassembling the meter the seals must be re-established using 15 x 15 mm void labels. Note: If the meter is used for
billing, this is a legal seal. Alternatively, Kamstrup's seal no. 2008-727 can be used.
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
Temperature range θ: 2 °C…150 °C
Differential range ∆Θ: 3 K…130 K
Cooling meter approval, TS 27.02 001
θ
°C
Differential range ∆Θ: 3 K…85 K
Min. flow
Pressure
∆p @ qp
Threaded
qp
qs
qi
qi
Type number
[
[
[
[
[mm]
302Txxxxx10xxx
0.6
1.2 6 - 3 3.0
0.02
G¾B
110
302Txxxxx11xxx
0.6
1.2 6 - 3 3.0
0.02
G¾B
130
302Txxxxx12xxx
0.6
1.2 6 - 3 3.0
0.02
G¾B
165
302Txxxxx40xxx
1.5
3.0
15 6 3
5.0
0.09
G¾B
110
302Txxxxx41xxx
1.5
3.0
15 6 3
5.0
0.09
G¾B
130
302Txxxxx42xxx
1.5
3.0
15 6 3
5.0
0.09
G¾B
165
302Txxxxx70xxx
302Txxxxx71xxx
302Txxxxx72xxx
302TxxxxxA0xxx
2.5
5.0
25
10
5
7.0
0.09
G1B
130
302TxxxxxA1xxx
2.5
5.0
25
10
5
7.0
0.09
G1B
190
302TxxxxxA2xxx
2.5
5.0
25
10 5 7.0
0.09
G1B
220
2 Technical data
2.1 Approved meter data
Approvals DK-0200-MI004-031 and TS 27.02 001
Standards EN 1434:2007 and prEN 1434:2013
EU directives Measuring Instruments Directive, Low Voltage Directive, Electro-magnetic
Compatibility Directive, Pressurised equipment Directive
Heat meter approval, DK-0200-MI004-031
The stated minimum temperatures are only
related to the type approval.
The meter has no cut-off for low temperature
and thus measures down to 0.01°C and 0.01 K.
Temperature range
Alternative temperature ranges θ: 2 °C…130 °C / ∆Θ: 3 K…110 K
θ: 2 °C…50 °C / ∆Θ: 3 K…30 K
Accuracy According to EN 1434
: 2 °C…150
Temperature sensors Pt500 – EN 60 751, 2-wire, hard-wired connection
EN 1434 designation Accuracy class 2 and 3 / Environmental class A
MID designation Mechanical environment: Class M2
Electromagnetic environment: Class E1
Closed location (indoors), 5…55 °C
Nom.
flow
Max.
flow
100:1 250:1
m3/h] [m3/h] [l/h] [l/h]
Min.
cut-off
l/h]
Saturation
flow
m3/h]
loss
bar]
1.5 3.0 15 6 3 5.0 0.07 G1B 130
connection
on meter
Length
1.5 3.0 15 6 3 5.0 0.07 G1B 190
1.5 3.0 15 6 3 5.0 0.07 G1B 220
Table 1
*With extension piece
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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Calculator data
Display
LCD – 7 (8) digits with digit height 6 mm
Resolution
9999,999 – 99999,99 – 999999,9 – 9999999
Energy units
MWh – kWh – GJ
Data logger (Eeprom)
960 hours, 460 days, 24 months, 15 years, 50 Info-events, 25 config. logs
Clock/calendar
Clock, calendar, leap year compensation, target date
Data communication
KMP protocol with CRC16 used for optical communication
Wired M-Bus
Protocol according to EN 13757-3:2013, 300 and 2400 Baud communication
wM-Bus
Mode C1 protocol according to EN 13757-4:2013. Individual 128 bit AES
Power of temperature
<
Supply voltage
3.6 VDC ± 0.1 VDC
EMC data
Fulfils EN 1434 class A (MID class E1)
Temperature measurement
2-Wire Pt500
T1
temperature
T2
temperature
∆Θ
∆Θ
0.00…155.00 °C
0.00…155.00 °C
0.01…155.00 K
0.01…155.00 K
Battery
3.65 VDC, 1 x A-cell lithium
3.65 VDC, 2 x A-cell lithium
Battery lifetime
Data modules, frequent data communication and high ambient temperature
Outside the USA
2.2 Electrical data
MULTICAL® 302
Typical accuracy
Calculator: E
± (0.15 + 2/∆Θ) % Sensor pair: ET ± (0.4 + 4/∆Θ) %
C
speed with automatic baud rate detection.
Current consumption 1 unit load (1.5 mA).
1.5 m fixed 2-wire cable. Polarity independent.
encryption.
Transmission interval 16 s
Mode T1 OMS protocol according to EN13757-4:2013 and OMS Specification
Volume 2 issue 3.0.1. Individual 128 bit AES encryption.
Transmission interval 15 min.
0.5 µW RMS
sensors
Inlet
Outlet
Heat metering
Measuring range
t
t
< 30 °C
BAT
< 45 °C
BAT
8 years
6 years
reduce the battery lifetime
16 years
12 years
Lithium content 0.96 g 2 x 0.96 g
Transport class
Not subject to dangerous goods regulations
Non-restricted to transport/Non-assigned to Class 9
Within the USA
Belonging to the category of ”small primary lithium cells”
(T1-T2)
(T2-T1)
Cooling metering
Important: It is not possible to change the battery on MC 302
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
Environmental class
Fulfils EN 1434 class A (MID class E1) and class M2
Medium temperatures
Heat meters 302-T
2…130 °C
At medium temperatures below 15 °C the calculator must be wall
Cooling meters 302-T
2…130 °C
Heat/cooling meters 302-T
2…130 °C
Medium in flow sensor
Water
Storage temperature
-25…60 °C (drained flow sensor)
Pressure stage (with thread)
PN16 and PN25
Weight
From 0.7 to 1.1 kg depending on flow meter size and extension piece
Flow sensor cable
1.2 m (undemountable cable)
Temperature sensor cables
1.5 m (undemountable cables)
2.3 Mechanical data
Protection
class
Calculator IP65
Flow sensor and sensor pair IP68 Condensing
Ambient
temperature
5…55 °C
mounted in order to prevent condensation.
At medium temperatures above 90 °C in the flow sensor the
calculator must be wall mounted in order to prevent too high
temperature, especially in relation to display and battery lifetime.
Non-condensing
Environmental class
Indoors (closed position)
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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Wetted parts
Flow sensor case
Hot dezincification proof brass (CW 602N)
Flow sensor cover
Wall bracket
Calculator case
Top
Thermoplastic, PC 10% GF
Cables
Flow sensor
Temperature
M-Bus
2.4 Material
MULTICAL® 302
Diaphragms
O-rings
Measuring tube
Reflectors
Thermoplastic, PC 20% GF
Base
Stainless steel, W.no. 1.4404
EPDM
Thermoplastic, PES 30% GF
Thermoplastic, PES 30% GF and stainless steel, W.no. 1.4306
Thermoplastic, ABS with TPE gaskets (thermoplastic elastomer)
Silicone cable with inner Teflon insulation
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
-6,0
-4,0
-2,0
0,0
2,0
4,0
6,0
0,01 0,10 1,00 10,00
Tol [%]
q [m³/h]
MULTICAL®302 qp1,5 m ³/h qp:qi100:1 @∆Θ30K
Ec +Et+Ef
(EN )
Ec +Et+Ef
(T yp)
q
s
q
p
0,1
q
i
2.5 Accuracy
Heat meter components MPE according to EN 1434-1
Flow sensor
Calculator
Sensor pair
Ef= ± (2 + 0.02 qp/q) % Ef= ± (1 + 0.01 qp/q) %
Ec= ± (0.5 + ∆Θ
Et= ± (0.5 + 3 ∆Θ
/∆Θ) % Ec= ± (0.15 + 2/∆Θ) %
min
/∆Θ) % Et= ± (0.4 + 4/∆Θ) %
min
MULTICAL
302, typical accuracy
Diagram 1: Total typical accuracy of MULTICAL
®
302 compared to EN 1434-1.
MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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Type number
Change only possible via METERTOOL
Change only possible via METERTOOL
Later, data can only be changed via
that the seal ”I
(SETUP)” is broken and the switch
3 Type overview
MULTICAL® 302 can be ordered in various combinations as required by the customer. First select the required
hardware from the type overview. Then select ”Config” and ”Data” to suit the application in question.
The meter is configured and ready for use from the factory. It can, however, be reconfigured before installation (see
paragraph 8.4 Setup loop for further information).
3.1 Type and configuration overview
302-T-xx-x-xx-xx-xxx
Type number and serial number (factory set
unique serial no.) are written on the meter
and cannot be changed after production.
CONFIG >AB<
Inlet/outlet - Measuring unit - Resolution
- Can be changed via the pushbutton while
the meter is still in transport state.
- Later, the seal ”I (SETUP)” must be broken
and the switch activated in order to change
the configuration.
CONFIG >DDD<
Display
provided that the seal ”I (SETUP)” is broken
and the switch activated.
CONFIG >EFGHHMMM<
Other configurations (see paragraph 3.6)
provided that the seal ”I (SETUP)” is broken
and the switch activated.
CONFIG ”ABDDD-EFGHHMMM” is not written
on the meter, it can be read from the
display.
DATA
- Can be changed via the pushbutton while
the meter is still in transport state.
METERTOOL provided
activated.
- Customer No.
- Target date
- Average peak time (Max. flow and power)
- θ
(only active for meter type 6)
hc
- Date/time
- M-Bus primary address
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
[
G¾B (R½)
G¾B (R½)
G1B (R¾)
G1B (R¾)
θ
hc
θ
hc
θ
hc
= OFF
θ
hc
= OFF
θ
hc
3.2 Type number composition
Type 302-
Basic version
Pt500 sensor input T
Communication
No communication 00
M-Bus (comes with 1.5 m factory mounted cable)
M-Bus (comes with 2.0 m factory mounted cable)
Wireless M-Bus, 868 MHz (configurable mode C1 or T1) 30
Supply
6-8 year battery, Normal Response meter
12-16 year battery, Normal Response meter 2
6-8 year battery, Fast Response meter
Temperature sensors
Pt500, ø5.2 mm temperature sensors with cable length 1.5 m and composite union Q9
Pt500, ø5.2 mm temperature sensors with cable length 1.5 m and brass union
20
21
1
3
QF
Flow sensor qp
m3/h]
0.6
DN15
1.5
DN15
1.5
DN20
2.5
DN20
Meter type
Heat meter (MID module B+D)
Heat/cooling meter (MID module B+D & TS27.02+DK268)
Heat meter (National approval)
Cooling meter (TS27.02+DK268)
Heat/cooling meter
Connection
Length
[mm]
110 10
110 40
130 70
130 A0
With extension to 130 mm
With extension to 165 mm
With extension to 130 mm
With extension to 165 mm
With extension to 190 mm
With extension to 220 mm
With extension to 190 mm
With extension to 220 mm
= OFF
= OFF
= ON
2
3
4
5
6
11
12
41
42
71
72
A1
A2
Country code (language on label etc.) XX
The flow sensors are type approved for dynamic ranges qp:qi = 250:1 and 100:1, but basically 100:1 is supplied.
Extension pieces, if any, are separately enclosed in the packing.
MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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3.2.1 Integration time
Depending on selected type number MULTICAL
every 32 seconds or every 8 seconds.
Supply
6 year battery, Normal Response meter
12 year battery, Normal Response meter 2
6 year battery, Fast Response meter
Among other things the meter's current consumption depends on the integration frequency of the meter. A Fast
Response meter integrates every 8 seconds and uses almost twice as much current as a Normal Response meter. This
means that the battery life is halved.
Normal Response cannot be changed to Fast Response and vice versa after delivery.
3.2.2 Configuration during setup of country code
The last two characters of the type number are called the country code. The code is used for setting up language of text
on label e.g. class 2 or 3, dynamic range, pressure stage PN16 or PN25, and indicates approval and verification marks.
Please contact Kamstrup for further details on available country codes. Currently available country codes appear from
internal document 5514-863 on Kamstrup’s Intranet.
®
302 is from the factory configured for integration (energy calculation)
1
3
3.2.3 Accessories
3026-655.A Wall fitting (LEXAN 3412R black)
6561-346 Holder for optical reading head
3130-362 Blind plug for temperature sensor in flow part (Copper alloy brass, CW614N)
6556-491 R½ x M10 nipple (Copper alloy brass, CW614N)
6556-492 R¾ x M10 nipple (Copper alloy brass, CW614N)
5920-257 G½ ball valve with M10x1 sensor socket
5920-271 G¾ ball valve with M10x1 sensor socket
6557-302 G½ sensor pocket 35 mm (Copper alloy brass, CW614N)
6699-099 Infra-red optical reading head w/USB plug
6699-102 Infra-red optical reading head RS232 w/D-sub 9F
6699-304 Infra-red optical reading head for NOWA
6699-016 Kamstrup NOWA KAS software
6699-724 METERTOOL HCW
6699-725 LogView HCW
Note: Ball valves with M10x1 socket (type: 6556-474, -475 and -476) are not suitable for sensors with O-ring seal
as they are intended for flat gaskets.
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
3.2.3.1 Couplings (PN16):
Article number Size Nipple Coupling
6561-323 DN15 R½ G¾
6561-324 DN20 R¾ G1
Material: Copper alloy brass, CW617N (nipple). Copper alloy brass, CW602N (coupling)
3.2.3.2 Gaskets for couplings:
Article number Size (coupling)
3130-126 G¾
3130-127 G1
Material: Reinz AFM30
3.2.3.3 Extension pieces:
Article number Description Length [mm] Total length [mm]
6556-505 Extension piece G¾B 20 130
6556-506 Extension piece G¾B 55 165
6556-507 Extension piece G1B 60 190
6556-508 Extension piece G1B 90 220
Material: Copper alloy brass (CW614N)
MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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qp
3.3 Config. >A-B<
The legal parameters of the meter are determined by Config., which can only be changed before installation when the
meter is still in transport state, or after breaking the seal ”I (SETUP)” and activating the switch.
The code A indicates installation of the flow sensor in inlet or outlet pipe. As the density and specific heat capacity of
water varies with temperature, the calculator must compensate for the installation type in question. Wrong
configuration or installation will result in a measuring error. Further details on installation of flow sensor in inlet and
outlet as far as heat and cooling meters are concerned appear from section 6.6.
The code B indicates the measuring unit used for energy registration, GJ, kWh or MWh, as well as the display
resolution.
A -
Flow sensor position
Inlet
Outlet
3
4
B
Measuring unit and resolution
00000.01 GJ 00000.01 m³
0000.001 GJ 0000.001 m³
0000001 kWh 00000.01 m³ 3
000000.1 kWh 0000.001 m³
0000.001 MWh 00000.01 m³
2
6
7
4
3.3.1.1 Dependency between measuring unit and resolution
Number of decimals in display
[m³/h]
0.6 0 3 2 2 0 - 1
1.5 0 3 2 2 0 - 1
2.5 0 3 2 2 0 - 1
0.6 1 - 3 3 0 - 1
1.5 1 - 3 3 0 - 1
2.5 1 - 3 3 0 - 1
kWh MWh GJ m³ l/h m³/h kW
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
1.0
Heat energy (E1)
1
1 *) 1 1 *)
2.0
Cooling energy (E3)
2 *)
1
2 *)
3.0
Volume 2 3 2 2 3
4.0
Hour counter
3 4 3 3
4
5.0
T1 (Inlet)
4 5 4 4
5
6.0
T2 (Outlet)
5 6 5 5
6
∆
8.0
Flow 9 8 7 7 8
9.0
Power
10 9 8 8 9
10.0
Info Code
11 10 9 9 10
11.0
Customer number (No 1)
12 11 10 10 11
12.0
Customer number (No 2)
13 12 11 11 12
13.0
E8 (m3 x T1)
7
14.0
E9 (m3 x T2)
8
3.4 Config. >DDD<, Display coding
Display code ”DDD” indicates the active readings of each meter type in "User Loop". ”1” is the first indication. The
display automatically returns to reading ”1” after 4 minutes. During normal operation the display readings of the
selected DDD-code, which are connected to User loop, are shown. See examples of DDD-codes below.
User loop (Loop_1)
Heat meter
DDD=217
Heat/cooling
DDD=310
Heat meter
DDD=410
Cooling meter
DDD=510
Heat/cooling
DDD=610
t) (Cooling shown by -)
7.0
T1-T2 (
6 7 6 6 7
*) The display order of DDD=3xx and 6xx can either start with ”E1-E3” or ”E3-E1”.
DDD=210/310/410/510/610 are ”standard codes” used by default. A complete overview of all created DDD-codes
appears from Kamstrup document 5512-1256.
The different loops are described in paragraph 8.
3.5 Energy overview
The above-mentioned energy types E1, E3, E8 and E9 are calculated as follows:
Formula Example of application Condition (country code 6xx only)
E1=V1(T1-T2)
E3=V1(T2-T1)
E8=m3 x T1
E9=m3 x T2
Heat energy (V1 in inlet or outlet)
T1 > T2
Cooling energy (V1 in inlet or outlet)
T2 > T1
Used for calculation of average
temperature of inlet pipe
Used for calculation of average
temperature of outlet pipe
θ
is the temperature, at which the meter shifts between heat and cooling measurement. The typical value is
hc
25 °C, but other values can be supplied as required.
is set at 180 °C the function is disconnected, e.g. to be used for ”purchase/sale” of heat. See paragraph 7.4 for
If θ
hc
further information on heat/cooling meters.
(Inlet temperature must be
T1 > θ
hc
higher than the limit value)
(Inlet temperature must be lower
T1 < θ
hc
than the limit value)
None
None
Legal Display/Data/Log
Legal Display/Data/Log
Display/Data/Log
Display/Data/Log
MULTICAL® 302
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21
3.6 CONFIG >EFGHHMMM<
The configuration can only be changed via METERTOOL HCW provided that the seal is broken and the switch activated.
E -
Info codes
Dynamic (Info codes are automatically deleted when the error has been remedied)
Static (Info codes can only be deleted by means of METERTOOL HCW)
Wired M-Bus protocol
Standard frame format *)
wM-Bus Encryption
Encryption with common (customer) key 2
Encryption with individual key
wM-Bus protocol
Mode C1 according to EN 13757 (16 s interval), yearly target data 01
Mode C1 according to EN 13757 (16 s interval), monthly target data
Mode C1 according to EN 13757 (16 s interval), yearly target data incl. E8 and E9 11
Mode C1 according to EN 13757 (16 s interval), monthly target data incl. E8 and E9 12
Mode T1 OMS (900 s interval), yearly target data
Mode T1 OMS (900 s interval), monthly target data 04
Customer label 2012-MMM
F - G - HH - MMM
1
2
3
3
02
03
000
*) Monthly data is transmitted by default. Change to yearly data possible by means of an M-Bus command.
For further details we refer to the Technical description of M-Bus for MULTICAL
Note: Green marking indicates standard.
®
302.
3.6.1
Customer label
In lower middle part of the meter an area of 15 x 38 mm is reserved for customer labels, e.g. utility logo, bar code,
serial number or similar according to customer requirements. Unless otherwise specified in the order, MULTICAL
®
302
will be supplied with customer label no. 2012-000, which comprises the meter’s customer number.
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
Automatic
To be stated in order
Default
Serial number (S/N) * and year
front)
67,000,000/2013 - -
Customer No.
-
Up to 16 digits
Customer number = S/N
Target date
-
MM=1-12 and DD=1-28
Dep. on country code setup
Average time of max. P and Q
-
1…1440 min.
60 min.
θ
-
Date/time
YYYY.MM.DD/hh.mm.ss
±
-
M-Bus primary addr.
Address 0-250
Deduced from the last 2-3
M-Bus ID-No. (used for
Customer No.
wM-Bus ID-No.
Serial number
3.6.2 Configuration data
Please contact Kamstrup for creation of new customer labels.
In addition to Config. >EFGHHMMM< values must be entered in the below-mentioned fields during production of
MULTICAL
®
302. Unless otherwise specified in the order, MULTICAL® 302 will be supplied with ”Automatic” and
”Default” data as listed below.
(year, however, only on the
Display No. 1 = 8 digits MSD
Display No. 2 = 8 digits LSD
Heat/cooling shift
hc
Only active with meter type 6
See paragraph 7.4 for
functionality
GMT+offset acc.to del.
code
In the order system limited
to 11 digits due to PcBase
compatibility
0.01…150.00 °C.
θ
= 180.00 °C switches
hc
off the function so that the
meter can be used for
”purchase/sale” of heat
GMT
12.0 hours
(30 min. in leaps)
25.00 °C
digits of the customer number
secondary address)
* S/N 67,000,000 to 68,499,999 have been reserved for MC302
3.6.3 Other functions
Creating an order in BOS you can choose ”fixed M-Bus addr” which means that all meters included in the order in
question will be configured with the same M-Bus address.
Internal configuration overview
3.6.4
See instructions no. 5508-825 concerning update of configuration.
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
23
Calculator
Wall-mounted calculator
Wall fitting for calculator
4 Dimensioned sketches
MULTICAL® 302
MULTICAL® 302 mounted on flow sensor
All measurements in [mm]
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
Flow sensor
Thread L A B1 B2 B3 Approx. weight [kg] *)
G¾B (R½) 110 12 35 35 40 0.7
G1B (R¾) 130 22 38 38 50 0.8
Thread L M A B1 B2 B3 Approx. weight [kg] *)
G¾B (R½) 130 73 30 35 35 40 0.8
G¾B (R½) 165 109 66 35 35 40 0.8
G1B (R¾) 190 124 81 38 38 50 1.0
G1B (R¾) 220 154 111 38 38 50 1.1
All measurements in [mm]
*) The weight indication comprises the whole meter incl. flow sensor, calculator, sensor pair and 2 x A batteries. Enclosed
accessories such as couplings, nipples and sensor pockets, if any, as well as packing are not included in the weight indication.
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pkvQ ∆×=
q
p
Nom. diameter Δp@q
p
Q@0.25 ba r
[m³/h] [mm] [bar] [m³/h]
A 0.6 G3/4B x 110 mm DN15 0.02 4.89
2.4
A 1.5 G3/4B x 110 mm DN15 0.09 4.89 2.4
B 1.5 G1B x 130 mm DN20 0.07 5.71 2.9
C 2.5 G1B x 130 mm DN20 0.09 8.15 4.1
Graph
Housing
kv
0,01
0,1
1
0,1 1 10
Δp [bar]
Flow [m³/h]
Δp MULTICAL®302
ABC
5 Pressure loss
Pressure loss in a flow sensor is stated as max. pressure loss at qp. According to EN 1434 maximum pressure must not
exceed 0.25 bar.
The pressure loss in a sensor increases with the square of the flow and can be stated as:
where: Q = volume flow rate [m³/h]
kv = volume flow rate at 1 bar pressure loss [m³/h]
∆p = pressure loss [bar]
Table 2: Approximated pressure loss table
Diagram 2: Pressure loss graphs
5.1 Calculation of pressure loss
The pressure loss at a given water flow can be calculated as: Δp=(Q/kv)2.
Example: a qp 1.5 meter with a current flow of 0.5 m
3
/h: Δp=(0.5/5)2 = 0.01 bar
MULTICAL® 302
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Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
Example of display reading if
Example of display reading if
6 Installation
6.1 Installation requirements
Prior to installation of MULTICAL® 302 the heating system should be flushed while a fitting piece replaces the meter.
Remove the adhesive wafers from the meter’s inlet and outlet and mount the flow sensor with couplings. New fibre
gaskets in original quality must be used. The flow sensor must be mounted with the arrow pointing in the flow
direction.
If other couplings than the original ones from Kamstrup A/S are used you must make sure that the threaded lengths of
the couplings do not prevent proper tightening of the sealing surface.
Correct mounting of flow sensor in inlet or outlet appears from the display.
the meter is configured for "flow
sensor in inlet pipe"
the meter is configured for "flow
sensor in outlet pipe"
In order to prevent cavitation the operating pressure at the flow sensor must be min. 1 bar at qp and min. 2 bar at qs.
This applies to temperatures up to approx. 80 °C. See paragraph 6.5 for further information on operating pressure.
When the installation has been completed, water flow can be turned on. The valve on the inlet side of the flow sensor
must be opened first.
The flow sensor must not be exposed to lower pressure than the ambient pressure (vacuum).
Permissible operating conditions
Ambient temperature: 5…55 °C (indoors). Max. 30 °C for optimum battery lifetime.
Temperature of medium: 2…130 °C with calculator mounted on a wall
15…90 °C with calculator mounted on flow sensor
System pressure: 1…16 bar or 1…25 bar depending on the meter's marking
Service
When the meter has been mounted in the heating system neither welding nor freezing is allowed. Dismount the meter
from the heating system before starting such work.
In order to facilitate replacement of the meter, closing valves should be mounted on both sides of the meter.
Under normal operating conditions no pipe strainer is required in front of the meter.
MULTICAL® 302
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6.2 Installation angle of MULTICAL® 302
®
MULTICAL
302 can be installed
horizontally, vertically, or at an angle.
Figure 1
Figure 2
Important!
®
MULTICAL
302 can be mounted at 0 °
(horizontal) and in all angles down to 90 °
(vertical) in respect to the pipe axis.
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