Kamstrup MULTICAL 302 User manual

Kamstrup A/S · Industrivej 28, Stilling · DK-8660 Skanderborg · T: [phone] · [e-mail] · kamstrup.com
Installation and User Guide
MULTICAL® 302

2 Kamstrup A/S • 55121351_D2_GB_04.2015
MULTICAL® 302
MID designations
Permissible operating conditions / measuring ranges
Clcultor q: 2 °C…150 °C DΘ: 3K…130K
Temperture sensor set q: 2 °C…150 °C DΘ: 3K…130K
Flow sensor q: 2 °C…130 °C
Also vilble s cooling meter with temperture rnge 2 °C...150 °C (lterntively 2 °C...50 °C) or
s combined het/cooling meter with temperture rnge 2 °C...150 °C, however with MID
pprovl on the het register only.
Mechanical environment
M1 nd M2 (fixed instlltion with minimum vibrtion nd fixed instlltion with considerble or
high vibrtion level, respectively).
Electromechanical environment
E1 (housing/light industry). The meter’s signl cbles must be drwn with  minimum distnce of
25 cm to other instlltions.
Climatic environment
Instlltion must tke plce in environments with non-condensing humidity nd in closed
loctions (indoors). The mbient temperture must be within 5 °C…55 °C. The flow sensor, however,
my be instlled in condensing environments.
Maintenance and repair
The flow sensor nd the temperture sensors must not be seprted from the clcultor. Repirs
require subsequent reverifiction in n ccredited lbortory.

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MULTICAL® 302
Contents
1 Generl informtion 3
2 Temperture sensors 4
2.1 Mounting of temperture sensors 4
2.2 Coupling for direct sensor 4
3 Informtion codes "INFO" 5
4 Mounting of flow sensor 6
4.1 Wll mounting of MULTICAL® 302 7
4.2 Flow direction 8
4.3 Instlltion position 8
4.4 Humidity nd condenstion 8
5 Mounting of clcultor 9
5.1 Compct mounting 9
5.2 Wll mounting 10
5.3 Position of clcultor 10
6 Bttery supply 10
7 Testing the function 11
8 Communiction 11
8.1 Wired M-Bus communiction 11
8.2 Wireless M-Bus communiction
(rdio) 11
9 Setup Mode 12
9.1 Chnging the instlltion position 13
9.2 Chnging the energy unit 14
1 General information
Please read this guide carefully before installing the energy meter.
In case of incorrect mounting, Kamstrup's guarantee obligations no longer apply.
Note tht the following instlltion conditions must be obeyed:
- Pressure stge: PN16/PN25, see mrking. The flow sensor mrking does not pply to
enclosed ccessories.
- Pressure stge
sensor set type Ø 5.2: PN16 nd PN25
At medium tempertures bove 90 °C, nd below 15 °C, nd the clcultor should be wll-
mounted.

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MULTICAL® 302
2 Temperature sensors
The temperture sensors used to mesure inlet nd outlet tempertures, respectively, re 
mtched sensor set tht must never be seprted.
Temperture sensors re mounted in MULTICAL® 302 from the fctory. According to EN 1434, the
cble length must not be chnged.
The temperture sensor which is mounted in the flow sensor from the fctory hs no mrking on
the sensor cble. The other sensor, which is mrked with  green plstic ring, must be mounted in
the "opposite" pipe compred to the flow sensor.
2.1 Mounting of temperature sensors
MULTICAL® 302 comes with  Ø 5.2 mm Pt500 sensor pir (mtched sensors) with 1.5 m silicone
cble. This sensor type cn be used s direct sensor using  coupling nd n O-ring nd s pocket
sensor to be mounted in  sensor pocket.
One temperture sensor is mounted in the flow sensor from the fctory. The other sensor ought to
be mounted s direct sensor. Alterntively, both sensors must be mounted in sensor pockets s
symmetricl sensor instlltion gives the best mesuring result. If one of the sensors is not to be
mounted in the flow sensor, it must insted be mounted s close to the outlet of the flow meter s
possible so tht the distnce between the flow sensor nd the temperture sensor is mx. 12 cm.
Asymmetricl sensor instlltion (one direct sensor nd one pocket sensor) is only dvisble
where ntionl regultions llow this, nd never in systems with low differentil temperture nd/
or low wter flow.
Example:
If the disply shows tht the flow sensor is to
be mounted in the inlet pipe, the sensor with
the green plstic ring must be mounted in the
outlet pipe.
2.2 Coupling for direct sensor
Slide the enclosed plstic coupling into plce
from the end of the sensor tube until you feel
 click when the coupling hs reched the first
knurling.

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MULTICAL® 302
The coupling must not be pushed further down
thn the first knurling.
No mtter where the direct sensor is instlled,
it is very importnt tht you observe the tole-
rnces stted in the drwing to the left. If not,
the O-ring my not provide correct seling.
9 -
0
0,1
0
Ø 9 -0,1
3 Information codes "INFO"
MULTICAL® 302 constntly monitors  number of importnt functions. If there is  serious error in
the mesuring system or instlltion,  flshing "INFO" is displyed, nd n info code cn be red
by ctivting the push-button until the mesuring unit displys "INFO". The info code is only shown
if n error hs occurred, unless the meter is configured for "sttic info codes".
Info code Description Response time
0 No irregulrities -
1 Supply voltge hs been interrupted -
4 Temperture sensor T2 outside mesuring rnge < 32 secs.
8 Temperture sensor T1 outside mesuring rnge < 32 secs.
32 Temperture difference hs wrong polrity < 32 secs. nd 0.05 m3
128 Supply voltge too low < 10 secs.
16 Flow sensor with wek signl or ir < 32 secs.
2Flow sensor with wrong flow direction < 32 secs.
If more thn one info code ppers t  time, the sum of info codes is displyed. If e.g. both
temperture sensors re outside mesuring rnge, info code 12 (info codes 4+8) is displyed.
Info codes 4 nd 8 re set when the temperture flls below 0.00 °C or exceeds 155.00 °C. Info
codes 4 nd 8 re lso set for short-circuited nd disconnected sensors.
Note: If Info = 4 or 8, the meter's energy clcultion nd volume ccumultion stop.

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MULTICAL® 302
4 Mounting of flow sensor
Prior to instlltion of the flow sensor, the
system should be flushed nd protection
plugs/plstic diphrgms removed from the
flow sensor.
Correct flow sensor position (inlet or outlet)
ppers from the disply of MULTICAL® 302.
The flow direction is indicted by n rrow on
the side of the flow sensor.
The flow sensor my be used in both PN16 nd
PN25 instlltions nd is vilble mrked
either PN16 or PN25 or mrked both PN16 nd
PN25, s required.
AA
SECTION A-A
SCALE 2 : 1
Tightening by hnd
O-ring
Gsket
12 mm
Enclosed couplings, if ny, re only intended for PN16. Suitble PN25 couplings must be used in
PN25 instlltions.
In connection with G¾x110 mm, it must be checked tht 12 mm thred run-out is sufficient. See
figure below.
Stright inlet: MULTICAL® 302 requires neither stright inlet nor stright outlet to meet the Me-
suring Instruments Directive (MID) 2004/22/ EF nd EN 1434:2007. A stright inlet section is only
necessry in cse of hevy flow disturbnces before the meter. It is recommended to follow the
guidelines of CEN CR 13582.
A Recommended flow sensor position
B Recommended flow sensor position
C Uncceptble position due to risk of ir
build-up
D Acceptble position in closed systems
E A flow sensor should not be plced
immeditely fter  vlve, except for block
vlves, which must be fully open when not
used for blocking
F A flow sensor should not be plced close to
the inlet side of  pump
G A flow sensor should not be plced close to
 two-level double bend.
A
B
C
D
E
F
G
In order to prevent cvittion, the operting pressure t MULTICAL® 302 must be min. 1 br t qp
nd min. 2 br t qs. This pplies to tempertures up to pprox. 80 °C.
MULTICAL® 302 must not be exposed to pressure lower thn the mbient pressure (vcuum).

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MULTICAL® 302
4.1 Wall mounting of MULTICAL® 302
MULTICAL® 302 cn be mounted verticlly,
horizontlly or t n ngle.
90° 90°
90° 90°
90°
90°
90°
90°
MULTICAL® 302 my be turned upwrds to mx
45° nd downwrds to mx 90° compred to
the pipe xis.
45°
45°
90°
90°
45°
45°
90°
90°
Important!
The meter is most sensitive to ir bubbles in the
wter when the plstic cse points upwrds.
Therefore, this mounting position ought only
to be used in instlltions with high operting
pressure nd utomtic ventiltion like e.g.
direct connected district heting.

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MULTICAL® 302
4.2 Flow direction
When the meter is instlled in the ppliction,
it must be ensured tht the flow direction is
correct.
Flow direction out of the figure – the direction is
indicted on the flow sensor.
Flow direction into the figure – the direction is
indicted on the flow sensor.
4.3 Installation position
In the upper left corner of the meter disply, n
icon indictes if the meter is positioned in the
inlet or outlet pipe.
It is very importnt to ensure tht the meter
is correctly positioned s either inlet meter or
outlet meter. The instlltion position of the
meter cn be chnged in the Setup Mode (for
further informtion, see prgrph 9.1, pge
13).
Icon for inlet meter
Icon for outlet meter
4.4 Humidity and condensation
If MULTICAL® 302 is instlled in moist
environments, it must be turned 45° compred
to the pipe xis, s shown in the drwing to the
left.
45°
45°

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MULTICAL® 302
5 Mounting of calculator
5.1 Compact mounting
The clcultor is mounted directly on the
flow sensor. The clcultor is seled from
the fctory, nd therefore, further seling is
unnecessry, unless the sels on the bck of
the clcultor hve been broken.
In cse of strong condenstion (e.g. cooling
pplictions), wll mounting of the clcultor is
recommended, see prgrph 5.2, pge 10.
83
24 59
83
24 59
In connection with compct mounting the cble
binder Aon the flow cble cn be removed by
relesing the cble binder A. Subsequently
insert the cble binder through one of the
mounting eyes Bnd drw it round the cble
C. Finlly the cble binder is strpped round
the flow cble gin tying the cble to the flow
sensor D.
A
B
C
D

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MULTICAL® 302
5.2 Wall mounting
The wll fitting mkes it possible to mount
MULTICAL® 302 directly on n even wll. Use
the fitting s  templte to mrk nd drill two 6
mm holes in the wll.
43
47
47
24
24
8
47
47
24
24
8
47
24
24
47 8
43
5.3 Position of calculator
If the flow sensor is mounted in  humid or
condensing environment, the clcultor must
be plced in  higher position thn the flow
sensor.
6 Battery supply
MULTICAL® 302 is bttery-supplied with either 1 or 2 A-cell btteries. Optiml bttery lifetime is
obtined by keeping the bttery temperture below 30 °C, e.g. by wll mounting.
The voltge of  lithium bttery is lmost constnt throughout the lifetime of the bttery
(pprox. 3.65 V). Therefore, it is not possible to determine the remining cpcity of the bttery by
mesuring the voltge. However, INFO code 128 indictes tht the bttery voltge is too low.
The bttery cnnot nd must not be chrged nd must not be short-circuited. Used btteries must
be hnded in for pproved destruction, e.g. to Kmstrup A/S.