Axis Industries QALCOSONIC HEAT 2 Parts list manual

A B “AXIS INDUSTRIES”
ULTRASONIC HEAT METER
QALCOSONIC HEAT 2
TECHNICAL DESCRIPTION, INSTALLATION AND USER INSTRUCTIONS
PESHEAT2V01
KAUNAS

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SAFETY REQUIREMENTS
Before operating the meter, please read this technical description and user's manual thoroughly
and follow their instructions.
When the meter is powered from the battery (3.6 V), risk factors during the meter installation
and service is a heat conveying fluid with inner pressure up to 2,5MPa and temperature up to
1800C.
If meter is powered from mains power supply, it contains dangerous ~230 V electrical current. It
is necessary to follow general safety requirements during installation and maintenance process.
To eliminate this risk, only qualified technical personnel may install and maintain heat meters
(certificates for electrical installation work with equipment up to 1000 V are required). Personnel
must be familiar with appropriate technical documentation and general safety instructions.
Device comply with safety class II. and does not require protective grounding. To protect power
circuits from current overrun, 0,1A fuse, marked “F1”, is mounted on the bottom side of power
supply module. Remove power supply module to replace the fuse.
If relay output current exceeds 2 A, it may damage output circuits. It is recommended to use
additional protection circuits to protect relay outputs from damage.
Safety guarantees at installation and service of meter is:
- Reliable insulation of electrical circuits,
- Hermetic fitting of primary flow and temperature sensors into the pipeline,
- Reliable fastening of a sub-assemblies of heat meter at installation.
Safety requirements for temperature and pressure sensors are provided in appropriate technical
documentation.
Warning! Switch off mains power supply before changing, repairing, connecting or
disconnecting system parts, if meter is powered from mains power supply! Power switch has to be
installed close to the calculator.
Mounting of the sub-assemblies of heat meter is permissible only after ensuring of absence
of heat conveying fluid in the pipeline.
When the meter is powered from the mains supply 230 V:
- The calculator of meter should be mounted in the cabinet (panel)
- The calculator of meter must be connected to line voltage 230 V using 3-wire copper cable
with cross-section of each wire not less than 0,5 mm2 (3x0, 5 mm2) with the color marking. External
diameter of a cable must be 6 ... 8 mm.
- The meter must be connected to mains power supply only through automatic unipolar AC switch
(nominal current 2 A) (Figure B3)..
- The automatic switch should be a part of the building wiring and it should be marked as
disconnecting device of meter. The automatic switch should be installed close to meter and so that it was
easily available to service personnel.
It is recommended to establish the calculator in the same cabinet as the switches for cutting off
power supply. The switches should be adjusted for the power used by the equipment.
Caution: If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.

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Contents
1. Application field...............................................................................................................................
2. Technical data......................................................................................................................... ........
3. Accessories and sub-assemblies.............................................................................................. .........
4. Operating principle...................................................................................................................... .....
5. Marking and sealing...........................................................................................................................
6. Safety requirements............................................................................................................................
7. Installation..........................................................................................................................................
8. Operation ...........................................................................................................................................
9. Verification........................................................................................................................................
10. Transportation and storage..............................................................................................................
11. Warranty..........................................................................................................................................
12.Individual technical data...................................................................................................................
Annex A. Measurement schemes and energy calculation formulas ..........................................
Annex B. Electrical wiring diagrams........................................................................................
Annex C. Numbering of terminals.............................................................................................
Annex D. Outline and mounting dimensions of calculator........................................................
Annex E. Outline and mounting dimensions of ultrasonic flow sensors……….......................
Annex F. Outline and mounting dimensions of temperature sensors........................................
Pg.
4
8
15
14
16
17
17
26
37
37
38
39
40
44
47
52
51
58
For EU Customers only - WEEE Marking.
Marking of electrical and electronic equipment in accordance with Article 11 (2) of
Directive 2002/96/EC
This symbol on the product indicates that it will not be treated as household waste. It must
be handed over to the applicable take-back scheme for the recycling of electrical and
electronic equipment. For more detailed information about the recycling of this product,
please contact your local municipal office.
EC DECLARATION OF CONFORMITY
AB Axis Industries herewith declares, that this product complies with the relevant
requirements of the following directives:
- 2014/32/EU
Measuring instruments Directive
- 2004/108/EC
EMC Directive
- 2006/95/EC
- 1999/5/EC
Low voltage Directive
Directive on Radio and Telecommunications
Terminal Equipment (R&TTE)
EC-type examination certificate: LT-1621-MI004-022

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1. APPLICATION FIELD
Ultrasonic heat meter QALCOSONIC HEAT 2 is designed for metering of consumed heating or
cooling energy in closed heating/cooling systems, and consumed or supplied heating energy in closed
heating systems, installed in dwelling houses, office buildings or energy plants.
Heat meter QALCOSONIC HEAT 2 consists of the primary flow sensor and the calculator with
type approved pair of temperature sensors with Pt500 elements.
The user may select (ordering the meter) one of twelve possible measurement schemes, according
to the application type:
Available measurement schemes QALCOSONIC HEAT 2 –
Measurement scheme application
Conventional
designation
For closed heating system with flow sensor in supply pipe
U1
For closed heating system with flow sensor in return pipe
U2
For closed heating system with flow sensor in supply pipe.
With leakage detection option
U1F
For closed heating system with flow sensor in return pipe
With leakage detection option
U2F
For closed system for accounting of heating - cooling energy with flow sensor in flow
pipe
U1L*
For closed system for accounting of heating - cooling energy with flow sensor in return
pipe
U2L*
For closed heating system with flow sensor in flow pipe or
for open heating system with the cold water temperature measurement and with two flow
sensors, installed in flow and return pipes
A*
For closed heating system with flow sensor in return pipe or for open heating system for
accounting energy consumption for heating and hot water preparation with cold water
temperature measurement and with two flow sensors, installed in flow and return pipes
for accounting of supplied heat energy
A1*
For closed heating systems with flow sensor in return pipe or for open heating system
with two flow sensors, installed in flow and replenishment pipes for accounting of
supplied heat energy
A2*
For closed heating systems with flow sensor in return pipe or for open heating system
with two flow sensors, installed in flow and replenishment pipes for accounting of
supplied heat energy
A4*
For combined heating - hot-water preparing systems.Two independent heat meters:
1st - For closed heating system with flow sensor in flow pipe.
2nd -For accounting of hot water energy
U1A3*
For combined heating - hot-water preparing systems. Two independent heat meters:
1st - For closed heating system with flow sensor in return pipe.
2nd -For accounting of hot water energy
U2A3*
Remark:
* - The requirements of the Directive 2014/32/EU are not applied.

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Heat meter corresponds to essential requirements of the Technical Regulation for Measuring
Instruments, dated 30 March 2006 (transposing in the NB’s country law Directive 2004/22/EC of 31
March 2004 on measuring instruments):
- Annex I Essential requirements
- Annex MI-004 Heat meter ,
QALCOSONIC HEAT 2 complies with the European standard EN 1434 “Heat meters”.
QALCOSONIC HEAT 2fulfils “C” class environment protection requirements according to
EN1434-1:2007
Climatic ambient temperature range: from 5 ° to 55 ° C
Humidity: non condensing
Location: closed
Mechanical environment: class M1
Electromagnetic environment: class E2

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Type number combination of the heat meter QALCOSONIC HEAT 2 for order placing:
Power supply:
Code
Battery 3,6 V
1
Main power supply 230 V
2
1-ojo matavimo kanalo srauto jutiklio DN sutartinis žymėjimas:
Sutartinis
žymėjimas
Kodas
Sutartinis
žymėjimas
Kodas
Sutartinis
žymėjimas
Kodas
Sutartinis
žymėjimas
Kodas
25
01
80.2
06
150.1
11
350
16
32
02
80.1
07
200.2
12
400
17
40
03
100.2
08
200.1
13
500
18
50
04
100.1
09
250
14
600
19
65
05
150.2
10
300
15
QALCOSONIC HEAT 2 SH2 –□□ –□–□□ –□–□□ –□□ –□□ –□□ –□
Type
Code of sensor of 2nd flow measurement channel is presented in table 1.2
Connection cable length of flow sensors, m:
Lenght
Code
Lenght
Code
Lenght
Code
Lenght
Code
Lenght
Code
3 m
01
10 m
03
20 m
05
60 m
07
100 m
09
5 m
02
15 m
04
40 m
06
80 m
08
None
00
Connection cable length of temperature sensors, m:
Lenght
Code
Lenght
Code
Lenght
Code
Lenght
Code
Lenght
Code
3 m
01
10 m
03
20 m
05
60 m
07
100 m
09
5 m
02
15 m
04
40 m
06
80 m
08
None
00
Ratio of the flow rates (qp/qi):
Code
100 (25)*
2
250
4
Code of sensor of 1st flow measurement channel is presented in table 1.2
Communication interface:
Type
Code
Type
Code
None
0
M-bus/RS232/CL, current output
4
M-bus
1
M-bus/RS232/CL, pulse output
5
RS232
2
MODBUS
6
RS485
3
MiniBus
7
RF 868MHz
8
Temperature sensors connection scheme, temperature difference
measurement range:
Code
Code
2-wire method, (2…150) K
22
2-wire method, (3…150) K
23
4-wire method, (2…150) K
42
4-wire method, (3…150) K
43
Measurement scheme:
Conventional
designation
Code
Conventional
designation
Code
Conventional
designation
Code
U1
01
U1L
06
A2
12
U2
02
U2L
07
A4
14
U1F
04
A
08
U1A3
16
U2F
05
A1
10
U2A3
17

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Table 1.2
Codes of flow sensors
Permanent flow rate qp,
m3/h
Overall length, mm
End connections
Code
0,6
110
G ¾
01
0,6
190
G1
31
0,6
190
DN20
35
1,0
110
G ¾
02
1,0
190
G1
32
1,0
190
DN20
36
1,5
110
G ¾
03
1,5
165
G ¾
11
1,5
130
G1
21
1,5
190
G1
33
1,5
190
DN20
37
2,5
130
G1
22
2,5
190
G1
34
2,5
190
DN20
38
3,5
260
G1 ¼
41
3,5
260
DN25
43
3,5
260
DN32
45
6,0
260
G1 ¼
42
6,0
260
DN25
44
6,0
260
DN32
46
10,0
300
G2
51
10,0
300
DN40
52
15,0
270
DN50
61
25,0
300
DN65
71
40,0
350
DN80
81
60,0
350
DN100
91

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2. TECHNICAL DATA
2.1. Energy measurement
2.1.1. Accuracy class - 2
Maximum permissible heat energy measurement error of calculator and flow sensor:
),/02,0/5,2( min qqE p 
%;
Maximum permissible heat energy measurement error of complete meter (error of temperature
sensors pair included): E = (3+4
min

/Θ+0,02qp/ q)
where:
min

- lower limit of the ntemperature difference, K;

- temperature difference, between the measured flow and return
temperatures of heat-conveying liquid K;
p
q
- permanent flow-rate, m³/h ;
q
- measured flow-rate, m³/h .
2.1.2. Thermal energy calculation
Consumed heat energy is calculated according to formulas given in Annex A
It is possible to perform calculations in two ways, using programmed or practically measured
pressure values ( 1-st pressure channel corresponds to the flow pipe, 2-nd –return pipe);
Possible heat energy measurement algorithms (selected in configuration mode):
Standard: Unidirectional flow measurement, energy is calculated without any restrictions,
Special: Unidirectional flow measurement,
Energy and quantity of liquid are not calculated in those cases:
- flow rate exceeds programmed maximum allowed value
- flow rate is under programmed minimum allowed value
-or temperature difference is under programmed minimum allowed value
Error code is generated when parameter values exceed given limits. Also, in that case
the device intermit calculating working time, and calculates error duration.
Winter / summer: Flow in 2-nd channel is measured in both directions, energy is calculated
taking into account flow direction without any limitations (only for A and
A1 measurement circuits –see Table 1).
2.1.3. Maximum power value 64 MW
2.2. Temperature measurement
- Number of sensor inputs (measurement channels) 1, 2 or 3*
- Temperature sensors type Pt500
- Absolute temperature measurement error not more than

0,3 oC
- Sensor connection method ** 2-wire, 4-wire
- Max. cable length between calculator and
each of the temperature sensors:
for the 4-wire connection method 3; 5; 10; 15; 20; 40; 60; 80; 100 m,
for the 2-wire connection method 3; 5 m,
- Temperature measuring range (1... 3) 0…180 oC
- Temperature displaying range (3) -40…180 oC
- Temperature difference (Θ1-Θ2 and Θ1-Θ3 )
measuring range 2…150 K (or 3…150 K)***

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- Resolution of indication of temperatures and
temperature difference 0,1 oC
- Maximum permissible RMS value of sensor current 5,5 mkA
- Recorded errors and their duration Θ >181 oC (or open circuit),
Θ < -41 oC (or short-circuit).
NOTES: * - additional 3rd channel selects the user during on-site installation
** - selected by the customer when ordering the device
*** - depending on the value of the lower measurement limit of the temperature
difference of the connected pair of temperature sensors
2.3. Flow measurement
2.3.1. Ultrasonic flow measurement channels (sensors) 1 and 2
- Ultrasonic flow measurement sensors
(depending on the measurement circuits) 2 or 1
Heat meater flow sensor data are presented in Table 2.1
Table 2.1
Flow-rate, m³/h
Threshold
value, m3/h
Overall
length,
L, mm
Pressure
loss p,
at qp, kPa,
not more
than
Connections end
(Thread –G, Flange –
DN)
Permanent
p
q
Maximum
s
q
Minimum
i
q
*
0,6
1,2
0,006(0,024)
0,003
110
7
G3/4“
0,6
1,2
0,006(0,024)
0,003
190
0,9
G1“, DN20
1,0
2,0
0,01 (0,04)
0,005
110
11,3
G3/4“
1,0
2,0
0,01 (0,04)
0,005
190
2,5
G1“, DN20
1,5
3,0
0,006 (0,06)
0,003
110; 165
17,1
G3/4“
1,5
3,0
0,006 (0,06)
0,003
190
5,8
G1“, DN20
1,5
3,0
0,015 (0,06)
0,003
110; 165
17,1
G3/4“
1,5
3,0
0,015 (0,06)
0,003
190
5,8
G1“, DN20
1,5
3,0
0,015 (0,06)
0,005
130
7,2
G1“
2,5
5,0
0,01 (0,1)
0,005
130
19,8
G1“
2,5
5,0
0,01 (0,1)
0,005
190
9,4
G1“, DN20
2,5
5,0
0,025 (0,1)
0,005
130
19,8
G1“
2,5
5,0
0,025 (0,1)
0,005
190
9,4
G1“, DN20
3,5
7,0
0,035 (0,14)
0,017
260
4
G1 1/4“ DN25, DN32
6,0
12,0
0,024 (0,24)
0,012
260
10
G1 1/4“ DN25, DN32
6,0
12,0
0,06 (0,24)
0,012
260
10
G1 1/4“ DN25, DN32
10,0
20,0
0,04 (0,4)
0,02
300
18
G2“, DN40
10,0
20,0
0,10 (0,4)
0,02
300
18
G2“, DN40
15,0
30,0
0,06 (0,6)
0,03
270
12
DN50
15,0
30,0
0,15 (0,6)
0,03
270
12
DN50
25
50
0,1 (1)
0,12
300
20
DN65
25
50
0,25 (1)
0,12
300
20
DN65
40
80
0,16 (1,6)
0,2
350
18
DN80
40
80
0,4 (1,6)
0,2
350
18
DN80
60
120
0,24 (2,4)
0,3
350
18
DN100
60
120
0,6 (2,4)
0,3
350
18
DN100
Remark:
1.*Values of the minimum flow rates for measurement schemes U1L and U2L (accounting of
heating-cooling energy ) are presented in brackets.

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Temperature limits of heat conveying liquid:
Θ
q
= 5....130 ºC (to all measurement schemes, except U1L and U2L);
Θ
q
= 0....130 ºC (to measurement schemes U1L and U2L, intended for the account of energy for
heating and cooling);
Accuracy class - 2
Limits of a permissible error of volume (mass) measurement:
Ef= (2 +0,02qp/q), %
- Difference of measurement errors of the pair flow sensors
in flow range from 0.1 qpto qs
(for circuits U1F, U2F, A1) no more than 1,0 .
Function of flow measurement in two directions is provided
- Connection line length between the calculator
and each of the flow sensor (3; 5; 10; 15; 20; 40; 60; 80; 100) m,
-Recorded errors and their duration:
- the flow channel is broken,
-the pipe is emty,
- flow rate exceeds maximum allowed value,
- flow rate is under minimum allowed value,
- Measurement units m3or t ;
- Nominal pressure PN (equal to the maximum working pressure PS) 1,6 MPa or 2,5 MPa,
- The flow sensors qp = (0,6...6) m³/h has intended place for temperature sensor installation.
2.3.2. Flow pulse input ( 3 and 4)
- number of pulse inputs 2
- pulse input device class IB (or IC –when filter is off)
- pulse values programmable
- type of pulses active, passive
- high voltage ranges of active pulses 2,5...3,7V
- low voltage ranges of active pulses 0 ...0,7V
- input resistance* at the bartery supply 2 MOm
- input resistance* at the main supply 10 kOm
(*Resistance of internal resistor to 3.6 V circuit)
- integrated programmable filter: programmatically
rejected input pulses, where the repetition period
is less than the stated period of the filter (2...999 ms) –for class IB only
- communication cable length between calculator
and each of the sensors (3; 5; 10; 15; 20; 40; 60; 80; 100) m,
- recorded errors and error duration(depending on the configuration):
- none recorded
- recorded at short circuit on line (or an impulse low level) longer than 2 s
- recorded when flow rate exceeds programmed maximum allowed value
- recorded when flow rate is under programmed minimum allowed value
- recorded when the pulse is not more than 24 hours.
- display units m3
- maximum permissible input pulse frequency and
minimal permissible pulse or pause duration,
depending on pulse type and cable length:

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Table 2.2
Power supply of meter/
Flow pulse input type
Connection
cable length , m
Maximum
permissible pulse
frequency, Hz
Minimal permissible
pulse or pause
duration, ms
Mains supply /
Active or passive pulses
(transistor key or mechanical contact)
<100 m
200 (5)
2,5 (100)
Battery supply/
Passive pulses
(transistor key or mechanical contact)
< 10 m
5
100
* - values for pulse input device class IB are presented in brackets.
- Flow rate value (for information) is calculated:
a) when the flow input pulse duration period is T 10 s - each 10 s as multiplication of flow
pulse value and flow pulse average period,
b) when the flow input pulse duration period is T =10...180 s - flow input pulse duration
periodicity as multiplication of flow pulse value and flow pulse period,
c) when the flow input pulse duration period is T 180 s - the value zero is indicated.
2.4. Pressure measurement
- Number of pressure inputs 0...2
- Display units kPa
- Fiducial error not more than 0,25 of the upper limit of
the measurement range
Pressure measurement ranges:
- lower limit , programmable from 0 kPa to 2500 kPa
- upper limit, programmable from 100 kPa to 2500 kPa
Normalized input dimension current, linearly dependent on the pressure
- input current limits, programmable 0-5 mA, 0-20 mA, 4-20 mA
- input resistance 110 Om
2.5. Time measurement
Relative time measurement error not more than 0,01 %
Heat meter calculator measures:
-real time - calendar
-time, when device is powered on
-normal working hours
-failure time of additional flow sensors V3 .. V4
-time, when flow rate exceeds programmed maximum allowed value for channels V1…V4
-time, when flow rate is under programmed minimum allowed value for channels V1…V4
-time, when temperature difference Θ1-Θ2 is under programmed minimum allowed value
Display resolution:
the real time display 1 s
for operating time display 0,01 h
Time of storage date not less than 12 years
2.6. Display (LCD)
The device is equipped with 8-digits LCD (Liquid Crystal Display) with special symbols to
display parameters, measurement units and operation modes
The following information can be displayed:
-integral and instantaneous measured parameters and archive data, listed in the Table 2.4.
-device configuration information (see Fig. 8.2.6).
-report printing control information (see Fig.8.2.5).

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Display resolution (directly corresponding with pulse output value), depending on programmed
maximum flow rate value (the highest value of the flow channel, involved in the energy calculation
formula), is provided in the Table 2.3
Table 2.3
Maximum flow
rate, m3/h
Displayed fluid volume (mass) lowest
digit value (flow pulse output value),
m3
Displayed energy lowest digit value
(energy pulse output value),
qs< 5
0,001
0,1 kWh or 0,0001 Gcal (or GJ )
5 qs<50
0,01
0,001 MWh (Gcal or GJ)
50 qs
0,1
0,01 MWh (Gcal or GJ)
2.7. Measured and recorded parameters:
Table 2.4
Arbitrary symbol
Parameter
Display capacity,
measurement units,
measurement ranges
Recorded in
archive
Integral parameters
E
Total consumed energy (in accordance with
Annex A)
8 digits,
MWh, Gcal, GJ*
Absolute values
every hour,
alterations every
hour, day and
month
E1
1st component of energy (in accordance with
Annex A)
E2
2nd component of energy (in accordance with
Annex A)
V1(M1)
Fluid volume (mass) of 1-st measurement
channel
8 digits,
m3(t)
V2 (M2)
Fluid volume (mass) of 2-nd measurement
channel
-M2
Reverse flow fluid mass in 2-nd channel (only
for “winter / summer” algorithm)
8 digits,
m3(t)
M1-M2
(V1-V2)
Fluid volume (mass) difference between 1-st
and 2-nd measurement channels
8 digits,
m3(t)
V3 (M3)
Fluid volume (mass) of 3-rd measurement
channel
8 digits,
m3
V4
Fluid volume of 4-th measurement channel
Total operation time
8 digits,
0,01 h
A
Operation time in normal mode
Er 1
Codes of significant faults (errors)
6 digits
Amount in
hour, day,
month
Er 2
Codes of transistory faults (errors)
6 digits
Instantaneous parameters
P
Total instantaneous thermal power
5 digits, kW
-------
q1
Flow rate on 1-st channel
5 digits,
m3/h a rba t /h
5 digits, m3/h
-------
q2
Flow rate on 2-nd channel
q3
Flow rate on 3-rd channel
q4
Flow rate on 4-th channel
p1
1-st channel fluid pressure
0 ... 2500,0 kPa
Average hourly,
daily and
monthly data
p2
2-nd channel fluid pressure
1
1-st channel fluid temperature
0...180 oC
2
2-nd channel fluid temperature
1-2
1-st and 2-nd channel temperature difference
(2...150) oC
3
3-rd channel fluid temperature
- 40...+180 oC

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2.8. Data recording and storage
Following daily, weekly and monthly parameter values are recorded in heat meter memory:
- absolute integral instantaneous parameter values (listed in Table 2.4)
- hourly, weekly and monthly alterations of integral parameters
- hourly, weekly and monthly average values for all measured temperature and pressure values
- error (fault) and information codes (see paragraph. 8.2.2) that occurred during the last hour, day
and month
Data logger capacity:
up to 110 days (3,5 months) –for hourly records.
up to 1461 days (36 last months) - for daily and monthly records,
Archive data retention time not more than 36 months
Retention time of measured integrated parametres
even if device is disconnected from power supply not more than 12 years
2.9. External communication modules and interfaces
2.9.1. Optical interface according to EN 62056-21:2003
(integrated into the front panel)
Optical interface is designed for:
- read out of values by protocol EN IEC 62056 or M-bus
- direct printing reports (by ASCII codes)
- read out archive data by protocol M-bus
- configuring of the meter by means of the special protocol
(parameterization mode is actuated by button “SET”)
- adjusting of the meter by means of the special protocol
(adjusting mode is actuated by jumper)
Programmable data transfer rate (300 ... 9600) bps
with the "Even" parity or not.
2.9.2. Wire communication interfaces (as optional plug in modules)
- M-bus (according to EN1434-3);
- M-bus / CL / RS232 / two pulses outputs;
- M-bus /CL / RS232 / two current outputs;
- RS232,
- R485,
- MODBUS,
- RF 868 MHz (wireless),
- MiniBus
Wire communication interface (except MODBUS) protocol M-bus (according to EN1434-3)
Data transfer rate Programmable (300 ... 9600) bps
with the "Even" parity or not.
Wire communication interface MODBUS protocol MODBUS RTU
2.9.3. Pulse -frequency and current outputs
Two programmable(configurable) pulse or
frequency (available only with mains power supply version)
outputs (as optional plug-in module) Class OD
Pulse outputs type (the user can select): or active pulses 18 V
or passive pulses (Umax 42V),
current up to 20mA
Two programmable current outputs
(as optional plug-in module, only available 0-20mA
with mains power supply version): or 4-20mA

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The configurable pulse-frequency output in “pulse mode” can be used for thermal energy (E, E1,
E2, E3) or quantity of liquid V1 (M1), V2(M2), V3(M3), V4 pulses Pulse value will correspond to the
lowest digit of indicated parameter.
The configurable pulse-frequency output in “frequency mode” or current output can be used for
thermal power , flow rate (q1, q2, q3, q4), temperature (1, 2, 3) or pressure (p1, p2) pulses.
Zero value of frequency (or the minimum value of the selected range of a current) corresponds to
zero value of an output parameter, and frequency 1000 Hz (or maximum value of the selected range of a
current) corresponds to maximum value of parameter:
flow rate –qmax,
temperature –180 oC,
pressure –p max,
thermal power–qmax*100 [kW],
There qmax- the maximum flow rate in the measurement channel [m3/h]).
2.10. Additional functions
2.10.1. Regulation function
Available only with mains power supply version. The double relay output (230V) is intended for
controling of current load up to 2A and it is fitted in main supply module.
Using electrically-controlled valve gives the possibility:
automatically maintain selected parameter value within defined limits,
prevent selected parameter from exceeding maximum allowed value,
prevent selected parameter from falling below minimal allowed value
control a water temperature on the flow pipeline, to maintain the preset room temperature,
depending on outdoor temperature (Θ3).
Following parameters can be selected for regulation:
thermal power,
any flow (q1…q4),
any temperature (Θ1 … Θ3),
temperature difference (Θ1- Θ2),
any pressure (p1 or p2).
IMPORTANT: Regulation will be efficient only if regulated valve is installed in such way that
it can effect regulated parameter.
Regulation speed (time interval from fully opening the valve to fully closing the valve) is
programmable.
Following electrically-controlled valves may be used for regulation:
with separate control inputs for opening and closing the valve,
where current required to open or close the valve does not exced 2A,
where voltage required to open or close the valve does not exceed 230 V
2.11. Alarm function
If regulation function is not required, relay output can be used to generate alarm signal. Relay
contacts will close, if:
- selected parameter value exceeds measurement limits,
- selected parameter exceeds maximum allowed value,
- selected parameter falls below minimum allowed value.
Any parameter listed in paragraph 2.10.1 can be used to generate alarm signal.
2.12. Supply voltage
Internal baterry* 3,6 VDC, D-cell lithium
Replacement interval not less than 10 years,

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Mains supply AC (502) Hz, 230 V
10
15


,
Power supply < 3 VA (only for meter) -
Consumption of energy per year up to 26.3 kWh;
Power supply < 15 VA
(for meter and extra sensors)
Consumption of energy per year up to 131,5 kWh;
Power supply for extra sensors
Voltage for powering pressure or extra flow sensors +18 V 10 
(only for meter with mains supply module) total current < 400 mA.
Voltage for powering extra flow sensors +3,6 V 10 ,
(only for meter with mains supply module) total current < 20 mA.
Voltage for powering extra ultrasonic flow sensors +3,6 V 10 ,
(for meter with supply from baterry) total current < 70 mkA.
NOTE: *
2.13. Mechanical data
Dimensions of calculator 159 mm x 52 mm x 142 mm
Dimensions of flow sensors According to Annex H
Weight of calculator 0,5 kg.
Weight of flow sensors According to table 2.7
Table 2.7
Connection type and overall length of flow sensor
Mass*, not more than, kg
G3/4“ , 110 mm
0,7
G3/4“ , 165 mm
0,8
G1“ , 130 mm
0,8
G1“ , 190 mm
0,9
DN20 , 190 mm
2,5
G1 ¼“ , 260 mm
3,2
DN25, 260 mm
5,6
DN32, 260 mm
6,1
G2“, 300 mm
3,7
DN40, 300 mm
6,8
DN50, 270 mm
8,5
DN65, 300 mm
13,0
DN80, 350 mm
15,0
DN100, 350 mm
18,0
NOTE: The mass of flow sensor is presented without mass of connecting cables. Maximum mass of
cables is 8 kg (2x100 m)
Functional limitations, when the meter is powered from internal batteries:
1. It is impossible to use relay regulator/alarm outputs function
2. It is impossible to use frequency and current outputs function
3. Unavailable pressure sensor power supply from the meter
5. Automatic restriction of operating time of communication interface (wire and
optical) till 80 minutes per month

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Envoronmental class Meets EN1434 class C
Ambient temperature:
Calculator at +5 oC to +55 oC
(indoor installation)
Floe sensors at -30 oC to 55 oC
Relative humidity < 93 , condensing
Mechanical environment class: M1
Electromagnetic environment class: E2
Protection class of calculator enclosure IP65
Protection class of flow sensor enclosure IP65 (IP67 or IP68 –by special ordering)
3. ACCESSORIES AND SUB-ASSEMBLIES OF HEAT METER
Required sub-assemblies and accessories may be delivered according to the particular
application and flow measurement scheme, as defined by the customer (listed in Table 3.1):
Table 3.1
Item
Amount,
pcs
1. Heat meter calculator QALCOSONIC HEAT 2
1
2. Technical description, user manual for heat meter QALCOSONIC HEAT 2
1
3. Mounting kit for heat meter calculator
1*
4. Ultrasonic flow sensors
1…2*
5. Internal baterry 3,6 V
1*
6. Internal 230 V mains power supply module
1*
7. Communication module SKS43 with M-bus interface
1*
8. Communication module SKU45 with M-bus, CL, RS-232 interfaces and two current
outputs
1*
9. Communication module SKU46 with M-bus, CL, RS-232 interfaces and two pulse
outputs
1*
10. Communication module SKS48 with RS-232 interface
1*
11. Communication module RS485
1*
12. Communication module MODBUS
1*
13. Communication module MiniBus
1*
14. Communication module RF 868MHz
1*
15. Temperature sensors PL-6 or TP2 , Pt500
1…3*
16. User manual for temperature sensors
1*
17. Pressure sensors MBS
2*
REMARKS: 1. “*” – required options selected by the customer,
2. Heat meter may be equipped with other types of temperature sensors, if they
correspond to requirements listed in paragraph 2, requirements of EN1434 standard and have the EC-
type examination certificate by Directive 2004/22/EC
3. Heat meter may be equipped with other types of pressure sensors, if they correspond to
requirements listed in paragraph 2, are included in Lithuanian state registry of measurement
equipment and have type approval sertificate.

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4. OPERATING PRINCIPLE
Ultrasonic heat and water meters QALCOSONIC HEAT 2 is multichannel programmable
microprocessor measuring device which consists of electronic unit (calculator) and the initial flow (up to
2), temperature (up to 3) and pressure (up to 2) sensors..
The flow measuring principle is based on ultrasonic measurement method. Fluid volume is
calculated according the formula:
V

KH* KM* (1/t+- 1/t-) *T ,
where: V - measured fluid volume, m3;
T –time of integration, s;
t+- measured upstream time of flight of ultrasonic pulse, s;
t-- measured downstream time of flight of ultrasonic pulse, s;
KH–hydrodynamic correction factor;
KM–coefficient that depends on the flow sensor dimensions.
The liquid temperature is measured with standard platinum resistance temperature sensors Pt500.
Pairs of temperature sensors with 2-wire or 4-wire connection method for measurement temperatures on
flow and return pipelines are used. Flow and return temperature sensors can be replaced only in pairs.
The temperature sensor T3 (if not used for calculation of thermal energy ) the user can activate
and use for other technological measurements or for regulation function.
Thermal energy is calculated using formulas provided in Annex A.
Additional inputs of flow V3, V4 and pressure sensors, which are not used for thermal energy
measurement, can be used (or not), for the control of other parameters.
Values of the measured and calculated patameters are shown on the display.
Possible thermal energy measurement algorithms are described in p. 2.2.2.
5. MARKING AND SEALING
5.1.Marking of meter
Marking of calculator:
There are following information on the front panel of calculator - manufacturer’s trade mark ,
identity marking (type designation and type number), serial number, year of manufacture, EC-type
examination certificate number, limits of the temperature,limits of the heat conveying temperature, limits
of the temperature diferences, type of temperature sensors (Pt500), the limiting values of the flow
rate(qi,qp,qs), flow sensor installation site (flow or return pipe), accuracy class, environmental class by
LST EN1434-1, electromagnetic and mechanical environmental class, enclosure protection class, the
maximum admissible working pressure (PN class), voltage level for external power supply, conventional
designation of the applied measurement scheme.
Numbers of terminal pins are marked close to the terminal
Marking of flow sensor:
There are following information on the flow sensor- manufacturer’s trade mark , nominal diameter
year of manufacture, serial number, arrow indicating the direction of the flow.
5.2.Security seals:
Manufacturer warranty seals:
-one warranty seal (the adhesive seal-sticker) on the one fixing bolt of electronic module under protective
cover (see Fig.8.1),
-seals on the screws of protective cover of flow sensor ( Sticker or hanging seal according Annex E, Fig.
E1..E4).
Manufacturer’s calibration (verification) seal:
-one seal on the one bolt of protective cover of electronic module inside the calculator (see Fig.8.1).
-seals on the screws of protective cover of flow sensor ( Sticker or hanging seal according Annex E, Fig.
E1..E4).

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Mounting seal:
-one or two hanged seals on the fixers of junction of the top and botton part of the calculator (Annex D)
-seals on the protective cover and mounting bolt of temperature sensors (see Annex F, Fig.1...2).
6. SAFETY REQUIREMENTS
When the meter is powered from the battery (3.6 V), risk factors during the meter installation and
service is a heat conveying fluid flowing within flow sensor with inner pressure up to 1,6 MPa and
temperature up to 1800C.
If meter is powered from mains power supply, it contains dangerous ~230 V electrical current.
To eliminate this risk, only qualified technical personnel may install and maintain heat meters
(certificates for electrical installation work with equipment up to 1000 V are required). Personnel must be
familiar with appropriate technical documentation and general safety instructions.
It is necessary to follow general safety requirements during installation and maintenance process.
Protective grounding is not required, because housing is made from plastics, and conductive parts
are not exposed to the surface.
To protect power circuits from current overrun, 0,1A fuse, marked “F1”, is mounted on the bottom
side of power supply module. Remove power supply module to replace the fuse.
If relay output current exceeds 2 A, it may damage output circuits. It is recommended to use
additional protection circuits to protect relay outputs from damage.
Safety guarantees at installation and service of meter is:
- Reliable insulation of electrical circuits,
- Hermetic fitting of primary flow and temperature sensors into the pipeline,
- Reliable fastening of a sub-assemblies of heat meter at installation.
Safety requirements for temperature and pressure sensors are provided in appropriate technical
documentation.
Warning! Switch off mains power supply before changing, repairing, connecting or
disconnecting system parts, if meter is powered from mains power supply! Power switch has to be
installed close to the calculator.
Mounting of the sub-assemblies of heat meter is permissible only after ensuring of absence
of heat conveying fluid in the pipeline.
7. INSTALLATION
Basic requirements
Before installing the device:
-check if all parts listed in the documentation are available,
-check if there are no visible mechanical defects,
-check if there are valid labels of manufacturer.
Only qualified personnel may install the equipment, following the requirements listed in this
document, in technical documentation of other system components and in heat meter installation project
Mechanical mounting
Mounting of calculator
Heat meter calculator may be installed in heated premises, on vertical surface. It may not be exposed
to direct sunlight. Outline and mounting dimensions are provided in Annex D
Calculator can be mounted in five different ways:
- Wall mounting, without possibility sealing of mounting
- Wall mounting, with possibility sealing of mounting
- Mounting on standard DIN-rail
- Panel mounting
- Direct mounting on ultrasonic flow sensor
Note: For water heating temperatures above 90 oC, the calculator must be mounted on the wall.
Mounting of ultrasonic flow sensors
Outline and mounting dimensions of ultrasonic flow sensors are provided in Annex E.

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For flow sensors of the heat meter with nominal diameter DN65….DN100 necessary straight
pipelines lengths are: upstream ≥ 5 × DN, downstream ≥ 3 × DN. For flow sensors of other sizes the
straight pipelines installation in upstream and downstream the sensor are not necessary.
Avoid the flow sensor installation near after the pumps which can cause cavitations.
Flow sensor can be mounted vertically, horizontally or on an incline in pipelines. A necessary
condition for operation - the pressure must be in the pipe and the pipe must be completely filled with
water.
The direction of the sensor installation (is indicated with the arrow on the label of flow sensor) must
mach with the flow direction in pipeline.
The flange gaskets must mach with the pipe diameter. During the installation gasket must be
exactly centered with the center of the pipe cross-section to avoid sticking out gaskets inside the pipe.
Mounting of temperature sensors
Temperature sensors are mounted by head upwards, is perpendicular to the pipe axis or inclined
by 45 ° angle on fluid flow direction so that the sensing element has been inserted in medium at least up
to the pipe axis or beyond (as shown in Annex F).
Electrical wiring
Electrical installation of heat meter is performed according to selected measurement scheme
(Annex B) and appropriate installation diagrams (Annex B), also according to technical requirements for
other system components. Description of connection terminal pins is provided in Annex C.
The signal wires can be connected to the calculator only after full installation of the meter.
It is forbidden to change length of a cable.
Temperature sensor connection:
2-wire or 4-wire connections could be used.
Using 4-wire connection schemes –the connection must be performed with the grounded cables
with signal wires with the cross-section not less than 0.12 mm2.
Using 2-wire connection schemes - the connection must be performed with the grounded cables
with total resistance of signal wires not more than 0.5 and the cable length difference no more than 2 
Before installation check that the temperature sensors are paired with each other (T1 to T2).
If cable length between calculation unit and sensors exceeds 5 m, shielded cables have to be used.
Cables should be run through rubber seal caps and anchored with clamps. Four-, three- or two-wire cable
should be used respectively. Cable shield should be connected to appropriate terminal pins (see diagram
in Annex B) or to any free contacts marked with symbol “ “or is clamped with metal clips in an
installation time.
At connection with the grounded cables it is necessary in addition one of free contacts „ “to
connect to a contour of grounding of a building a copper wire with section (0,5... 1,0) мм2.
It is forbidden to wire signal cables nearby (less than 5 cm) with power cables or cables of other
devices.
7.2. Setting up the configuration
The heat meter is universal device for measurement of supplied (consumed) heating energy. The
calculator has to be customized for the particular application, putting into account the type of heating
system, also types of flow, temperature and pressure sensors. After placing an order, calculating unit is
adapted to one of several possible measurement circuits. Energy calculation formulas and measurement
ciecuits are presented in Annex A. Flow, temperature and pressure channels, unused for heat energy
measurement, cal be used to control other parameters. It is possible to select measurement units for flow
measurement (volume units or mass units –according to measured media temperature).
The heat meter has to be programmed for the specific application using the control buttons , also
the configuration button “SET” (under the lid, see Fig. 8.1) or with the PC.
To enter the configuration mode, open the calculator lid and press the button “SET”. Press the
“SET” button once more to leave the programming mode.

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When configuration (programming) mode is active, label “SET” is displayed in the upper right
conner of the display. All parameters have to be programmed. The algorithm for setting up parameters,
possible parameter limits and abbreviations are listed in Table 7.1.
Table 7.1
Menu description
LC Display example
Value
(Possible limits of change)
Serial number of meter *
Serial flow sensor number of 1st
flow measurement channel*
Serial flow sensor number of 2nd
flow measurement channel*
Customer number
0…999999
Real time calendar
The date format is
<year>.<month>.<day >
Real time clock
The time format is:
<hour>-<minute>-<second>
Set day
The yearly set day format is:
12.31 (<month>.<day>),
The monthly set day format is:
--.30 (<day>)
-- . -- - function is deactivated
Serial communication interface
address
0…255
Data transfer rate via wired
interface
(300…38400, 300E…38400E) bytes/s
“E” –parity “Even”
None “E” – no parity
Data transfer rate via optical
interface
(300…9600, 300E…9600E) bitų/s
“E” –parity “Even”
None “E” – no parity
Next replacement date of the
battery
The date format is <year>.<month>)
Measuring circuit symbol and
energy calculation algorithm*
U1,U2,U3,U1F,U2F,U1L,U2L,A,AC,A1,
A1C,A2…A5,U1A3,U2A3,F1,F2
Algorithm: 1 –standard
2 –special
3 - “winter/summer”
List of active temprature sensors
(“1 2 3 “) and type of sensors*
Possible types:
Pt500, Pt1000, 500П, 1000П