Landis+Gyr Ultracold T550 Parts list manual

ULTRAHEAT®T550 (UH50…)
ULTRACOLD®T550 (UH50…)
Flow sensor T550 (UH50…)
Technical description
32 16 101 001 h
Date: 23.08.2018
Landis+Gyr GmbH
Ultrasonic heating and cooling meter
T550 (UH50…)
Residential, district heating, local heating plant

Outstanding features 2/49
Outstanding features
Meter for measurement of flow and energy in a heat or cold circuit with water using the ultra-
sonic principle.
Important properties are:
Non-wearing due to non-moving parts
Measuring range of 1:100 according to EN1434:2014, 1:1.000 total range
Power measurement with maximum values, tariffs selectable
Data logger for system monitoring
60 monthly values
Logbook
Battery or mains operated
Optical interface according to EN 62056-21:2003
Big range of communication modules for remote readout and system integration
2 module slots for using 2 communication modules coincidental
Also operable as a flow meter, cooling or combined heat/cold meter
Self-diagnosis

Contents 3/49
Contents
1General notes ____________________________________________________________5
Other available documentations ______________________________________________5
2Safety information ________________________________________________________6
3Technical data ___________________________________________________________8
Small meters (qp 0.6 –2.5 m³/h)_____________________________________________10
Large meters with thread___________________________________________________11
Large meters with flange___________________________________________________12
Large meter qp 150_______________________________________________________12
4Installation _____________________________________________________________13
Installation Notes_________________________________________________________13
Examples of installation____________________________________________________13
Installation notes for sensor adapter set (temperature sensor directly immersed) _______14
4.1 Installation for cooling metering ___________________________________________15
4.2 Installation of qp 150 ___________________________________________________15
5Dimension of electronic unit_______________________________________________16
6Operating elements ______________________________________________________ 17
6.1 Displaying current meter status ___________________________________________18
Display values (LOOPs) ___________________________________________________18
User loop „LOOP 0“_______________________________________________________18
Service loop 1 „LOOP 1“ ___________________________________________________19
Service loop 2 „LOOP 2“ ___________________________________________________19
Service loop 3 („LOOP 3“)__________________________________________________20
Service loop 4 („LOOP 4“)__________________________________________________21
6.2 Previous year’s values __________________________________________________22
6.3 Monthly values ________________________________________________________22
7Resolution of the display__________________________________________________23
8Power supply ___________________________________________________________24
Automatic power supply detection____________________________________________24
Power supply requirements_________________________________________________24
Power supply modules ____________________________________________________25
9Communication _________________________________________________________26
Electronic unit interfaces___________________________________________________26
Permissible combinations of modules_________________________________________27
Terminals_______________________________________________________________28
9.1 Pulse module _________________________________________________________28
9.2 CL module ___________________________________________________________29
9.3 M-Bus module G4 _____________________________________________________29
9.4 M-Bus module MI with 2 pulse inputs_______________________________________30
9.5 Analog module ________________________________________________________31
9.6 Radio module 868 MHz (Wireless M-Bus)___________________________________31
9.7 Radio module 868 MHz LoRaWAN (CMi4110) _______________________________32
9.8 GPRS module ________________________________________________________32
10 Tariff control (optional) ___________________________________________________ 34

Contents 4/49
Threshold value tariff (tariffs T2, T3, T4, T5, T6)________________________________ 34
Supplied quantity of energy (tariff T7) ________________________________________ 34
Returned quantity of energy (tariff T8)________________________________________ 34
Heating/Cooling meter (tariff T9) ____________________________________________ 35
Tariff control via timer switch (tariff T10) ______________________________________ 35
Tariff control via M-Bus (tariff T11) __________________________________________ 35
Surcharge quantity tariff by means of return temperature (tariff T12) ________________ 35
Display of the tariff situation on the LCD ______________________________________ 35
11 Error messages__________________________________________________________37
12 Log functions ___________________________________________________________38
13 Data logger (optional)_____________________________________________________40
14 Additional options _______________________________________________________41
15 Order codes (type number key)_____________________________________________42
16 Additional ordering information on radio module 868 MHz (wireless M-Bus EN13757-4,
OMS v2.0)_______________________________________________________________45
17 Additional ordering information on radio module 868 MHz (wireless M-Bus EN13757-4,
OMS v4.1.2) _____________________________________________________________46
18 Pressure loss ___________________________________________________________47

General notes 5/49
1 General notes
Note:In the following text, the term meter refers to heating meter,
cooling meter and flow meter, unless they are otherwise differenti-
ated.
The meter is used as a meter for heating or cooling consumption measure-
ment in systems with water.
The meter consists of a volume measurement, two temperature sensors and
an electronic unit that calculates the energy consumption from the volume and
temperature difference. The meter combines modern microcomputer technol-
ogy with innovative ultrasonic measurement technology for which no mechani-
cally moving parts are necessary.
This technology is thus wear-free, robust and largely maintenance-free. High
precision and long-term stability guarantee precise and accounts of charges.
Other available documentations
Operating instructions T550(UH50…)
Installation instructions T550(UH50…)
Respective module operating and installation instruction
Illustrated catalogue
Additional informations are available on request.

Safety information 6/49
2 Safety information
The meter may only be used in building service engineer-
ing systems and only for the applications described.
The local regulations (installation etc.) must be adhered to.
The operating conditions according to the type plate must
be complied with during use. Non-compliance can result in
hazardous situations and the expiry of all claims arising
from liability for defects as well as liability on the basis of
any expressly granted guarantees.
Requirements for circulating water (CEN/TR 16911: 2016).
The meter is only suitable for circulating water in heating
systems.
The meter is not suitable for drinking water.
Do not lift the meter by the electronic unit.
Be aware of sharp points on the thread, flange and meas-
uring tube.
Only personnel, trained in the installation and operation of
meters in heating and cooling systems, may install and
remove the meter.
Only install or remove the meter when the pipes are pres-
sure-less.
After installing the meter, check the leak-tightness of the
system.
Guarantee and calibration validity will lapse if the calibra-
tion relevant security seal is broken.
Only clean the meter from outside with a soft, lightly wetted
cloth. Do not use any spirit or cleaning solvent.
The 110 V/230 V connections may only be made by an
electrician.
The meter may only be powered up once the installation
has been completed. Otherwise, there is a danger of elec-
tronic shock on the terminals.
A defective or obviously damaged appliance must be dis-
connected from the power supply immediately and re-
placed.

Safety information 7/49
As far as disposal is concerned, the meter is a waste elec-
tronic appliance in the sense of European Directive
2012/19/EU (WEEE) and it must not be disposed of as
domestic waste. The relevant national, legal regulations
must be observed as the appliance must be disposed of
via the channels provided for this purpose. The local and
currently valid legislation must be observed.
The meter contains lithium batteries. Do not dispose of the
meter and the batteries with domestic waste. Observe the
local stipulations and laws on disposal.
You can return the lithium batteries to the manufacturer for
appropriate disposal following use. When shipping please
observe legal regulations, in particular, those governing
the labelling and packaging of hazardous goods.
Do not open the batteries. Do not bring batteries into con-
tact with water or expose to temperatures above 80 °C.
The meter does not have any lightning protection. Ensure
lightning protection via the in-house installation.
Only fit one compartment for the voltage supply. Do not
remove the red locking hatch.

Technical data 8/49
3 Technical data
General
Measuring accuracy
Class 2 or 3 (EN 1434)
Environment class
A (EN 1434) for indoor installation
Mechanical class
M1 *)
Electromagnetic class
E1 *)
*) according to 2014/32/EU Directive on Measuring Instruments
Ambient humidity
< 93 % rel. humidity at 25°C,
without condensation
Max. height
2000 m above sea level
Storage temperature
-20 … 60 °C
Electronic unit
Ambient temperature
5 … 55°C
Housing protection rating
IP 54 according to EN 60529
Safety class
Line 110 / 230 V AC
II according to EN 61558
Line 24 V ACDC
III according to EN 61558
Operation threshold f. T
0.2 K
Temperature difference T
3 K … 120 K
Temperature measurement range
0 ... 180°C
LCD
7 digit
Optical interface
Standard, EN 62056-21
Communication
Optional, e. g. M-Bus
Separability
Always, optional cable length
Temperature sensor
Type
Pt 500 or Pt 100
According to EN 60751
Temperature range
0 ... 150°C
(up to 45 mm overall length)
0 ... 180°C
(from 100 mm overall length)
Volume measurement unit
Protection class
IP 54 / IP 65 / IP 68 according to EN
60529
According to EN 60529
Mounting place
Hot side / cold side
Installation position
Any
Flow straightening
None
Measuring range
1:100
Temperature range
5 … 130°C
National type approvals may be differ-
ent.
Recommended...
...heating application
10 … 130°C
...cooling application
5 … 50°C
Maximum overload
2,8 × qp
Nominal pressure
PN16 (PS16), PN25 (PS25)

Technical data 9/49
Nominal flowrate
qp
Overall length
Connection
Maximum flowrate
qs
Minimum flowrate
qi
Response threshold
(variable)
Pressure loss at
qp
Kv flowrate at
Δp 1 bar
Kv flowrate at
Δp 100 mbar
Weight
m3/h
mm
G/DN
m3/h
l/h
l/h
mbar
m3/h
m3/h
kg
0.6
110
G 3/4
1.2
6
2.4
150
1.5
0.5
1
0.6
190
G1
1.2
6
2.4
150
1.5
0.5
1.5
0.6
190
DN20
1.2
6
2.4
150
1.5
0.5
3
1.5
110
G 3/4
3
15
6
150
3.9
1.2
1
1.5
130
G1
3
15
6
160
3.8
1.2
1.5
1.5
190
G1
3
15
6
160
3.8
1.2
1.5
1.5
190
DN20
3
15
6
160
3.8
1.2
3
2.5
130
G1
5
25
10
200
5.6
1.8
1.5
2.5
190
G1
5
25
10
210
5.3
1.7
1.5
2.5
190
DN20
5
25
10
210
5.3
1.7
3
3.5
260
G 1 1/4
7
35
14
60
14
4.5
3
3.5
260
DN25
7
35
14
60
14
4.5
5
6
150
G 1 1/4
12
60
24
240
12
3.9
3
6
260
G 1 1/4
12
60
24
180
14
4.5
3
6
260
DN25
12
60
24
180
14
4.5
5
10
200
G2
20
100
40
130
28
8.8
2.6
10
300
G2
20
100
40
110
30
9.5
4
10
300
DN40
20
100
40
130
28
8.8
7
15
200
DN50
30
150
60
95
49
15.4
5
15
270
DN50
30
150
60
110
45
14.3
8
25
300
DN65
50
250
100
105
77
24.4
11
40
300
DN80
80
400
160
160
100
31.6
13
60
360
DN100
120
600
240
115
177
56.0
22
150
500
DN150
300
1500
600
120
433
136.9
50*)
*) Measurement insert 4 kg
Tolerance of pressure lost: +/- 5%

Technical data 10/49
Small meters (qp 0.6 –2.5 m³/h)
Fig. 1: Overview dimensions overall length 110 mm (thread)
Fig. 2: Overview dimensions overall length 130 mm (thread)
Fig. 3: Overview dimensions overall length 190 mm (thread)
Order-No.
qp
PN
a
b
c
m³/h
bar
mm
mm
mm
UH50-x03
0.6
16
130
G1
58
UH50-x04
0.6
25
130
G1
58
UH50-x05
0.6
16
110
G ¾
48
UH50-x06
0.6
25
110
G ¾
48
UH50-x07
0.6
16
190
G1
88
UH50-x09
0.6
25
190
G1
88
UH50-x21
1.5
16
110
G ¾
48
UH50-x22
1.5
25
110
G ¾
48
UH50-x23
1.5
16
190
G 1
88
UH50-x25
1.5
25
190
G1
88
UH50-x26
1.5
16
130
G1
58
UH50-x27
1.5
25
130
G1
58
UH50-x36
2.5
16
130
G1
58
UH50-x37
2.5
25
130
G1
58
UH50-x38
2.5
16
190
G1
95
UH50-x40
2.5
25
190
G1
95

Technical data 11/49
Fig: Overview dimensions overall length 190 mm (flange)
Order-No.
qp
PN
Overall
length
Connection
m³/h
bar
mm
UH50-x08
0.6
25
190
DN20
UH50-x24
1.5
25
190
DN20
UH50-x39
2.5
25
190
DN20
Large meters with thread
Fig. 5: Overview dimensions of large meters with thread
Order-No.
qp
PN
a
b
c
m³/h
bar
mm
mm
UH50-x45
3.5
16
260
59
G 1¼ B
UH50-x47
3.5
25
260
59
G 1¼ B
UH50-x50
6
16
260
59
G 1¼ B
UH50-x60
10
16
300
59
G 2 B
UH50-x63
10
16
200
59
G 2 B
Fig. 6: Overview dimensions of large meters qp 6 with tread (short face-to-face length)
Order-No.
qp m³/h
PN bar
c
m³/h
bar
UH50-x55
6
16
G 1¼ B
Alternative
mounting option

Technical data 12/49
Large meters with flange
Fig. 7: Overview dimensions of large meters with flange
Order-
No.
qp
PN
DN
a
b
Øc
Ød
Øe
No. of
holes
f
g
m³/h
bar
mm
mm
mm
mm
mm
mm
mm
UH50-x46
3.5
25
25
260
59
112
85
14
4
60
19
UH50-x52
6
25
25
260
59
112
85
14
4
60
19
UH50-x61
10
25
40
300
59
140
110
18
4
90
19
UH50-x65
15
25
50
270
59
155
125
18
4
102
20
UH50-x69
15
25
50
200
59
155
125
18
4
102
20
UH50-x70
25
25
65
300
52
185
145
18
8
122
22
UH50-x74
40
25
80
300
56
200
160
18
8
138
24
UH50-x82
60
16
100
360
68
235
180
18
8
158
24
UH50-x83
60
25
100
360
68
235
190
22
8
158
24
Large meter qp 150
Fig. 8: Overview all dimensions of large meter qp 150
Order-No.
qp
PN
DN
a
b
Øc
Ød
Øe
No. of
holes
f
g
m³/h
bar
mm
mm
mm
mm
mm
mm
mm
UH50-xA1
150
16
150
500
91
300
240
23
8
211
31
UH50-xA2
150
25
150
500
91
300
250
28
8
211
31

Installation 13/49
4 Installation
To install the meter proceed as follows:
Determine the place of installation in line with the inscription on the meter.
Note: At a heating meter or combined heating/cooling meter the
mounting place of the flow sensor cold side is equivalent to return
flow. The mounting place of the flow sensor hot side is equivalent
to flow.
Note: At a cooling meter the mounting place of the flow sensor
hot side is equivalent to the return flow. The mounting place of the
flow sensor cold side is equivalent to flow.
Observe the dimensions of the meter and check whether there is sufficient
space available.
Rinse the system thoroughly before installing the meter.
Fit the meter vertically or horizontally between two slide valves so that the
arrow on the housing and the flow direction match. Also observe the instal-
lation situations and the following examples of installation.
Fit the temperature sensors in the same circuit as the meter. Observe the
admixtures.
Seal the temperature sensors and the fittings to protect against manipula-
tion.
Loosen the elastic band or the cable tie, provided for the transport, from the
volume measurement unit. In operation, the temperature sensor and the
control cable should not depend directly on the volume measurement unit.
If you install the meter for cooling metering, follow the appropriate notes.
Installation Notes Inlet or outlet sections are not necessary. If you install the meter in the com-
mon return of two circuits, determine a place of installation with a minimum
distance of 10 × DN from the T-piece. This distance ensures a good thorough
mixing of the different water temperatures. You can install the temperature
sensors in T-pieces, ball valves, directly immersed or in pockets depending on
the version. The temperature sensor ends must reach to at least the middle of
the pipe cross section.
Note: During installation it must be ensured that no water can
enter the electronic unit during operation.
Examples of installation
Ball valve
Fig. 9: Installation with a ball valve (recommended up to and including qp 6)

Installation 14/49
Welding sleeve with pockets
Fig. 10: Installation with pockets (recommended greater than or equal to qp 10)
Fig. 11: Installation for circulation with admixing; placement of temperature sensors
Fig. 12: Installation for circulation with throttling configuration for example (flow sensor in flow direction
upstream control valve / differential pressure regulating valve)
Installation notes for sensor adapter set (temperature sensor directly immersed)
A mounting set is included for meters with 5.2 × 45 mm temperature sensors.
It allows for mounting the temperature sensors directly immersed into an insert
or a ball valve for example.
1. Install with the O-ring at the point of installation with the fit-up aid/pen pro-
vided.
2. Place both halves of the plastic bolting round the 3 notches of the tempera-
ture sensor.
3. Press the bolting together and screw the bolting hand tight into the point of
installation until it comes to a stop (tightening torque 3 …5 Nm).
Fig. 13: Mounting adapter set

Installation 15/49
4.1 Installation for cooling metering
When installing as a cooling meter it is essential that the black cover on the
measuring tube is pointed to the side or down-wards in order to avoid prob-
lems with condensation. Fit the immersion sleeves so that the temperature
sensor is positioned vertically downwards or horizontally.
Fit the electronic unit separate to the volume measurement tube, e.g. on the
wall. Make a loop downwards in order to prevent condensation running along
the connected lines into the electronic unit.
Transducer cover
Fig. 14: Recommended installation position for cooling metering
4.2 Installation of qp 150
Note: Use flange bolts with a length of at least 100 mm to install the
flanged body in the pipeline.
As an assembly aid 2 M10 threads are mounted on the flange. The threads al-
low for the use of stainless steel eye bolts, for example, for a lifting device.
Note: The measurement insert in the flanged body should be posi-
tioned on the top. This allows a simple exchange of the measure-
ment insert.

Dimension of electronic unit 16/49
5 Dimension of electronic unit
Fig. 15: Dimensions of electronic unit
Fig. 16: Plan view and cross section of adapter plate

Operating elements 17/49
6 Operating elements
Fig. 17: Operating elements
No.
Name
Description
Note
1
Service button
To call up the pa-
rameterization op-
eration of the me-
ter.
Accessible after removing
the cover.
2
Button 2
Switches to the
next display value
within a loop.
3
Button 1
Switches to the
next loop.
4
Optical interface
Permits data com-
munication via a
computer with the
necessary service
software.
1
2
3
4

Operating elements 18/49
6.1 Displaying current meter status
The meter displays the current meter status in kWh, MWh, MJ or GJ.
Note: In order to prevent reading errors, the decimal places of
the values displayed are marked with a frame.
Note: Calibrated values can be recognized by an additionally
displayed star symbol.
Note: Both display range and data displayed can differ from
the description depending on the appliance parameterization.
Certain button functions can also be blocked.
Display values (LOOPs)
User loop
Service loop 1
Service loop 2
...
...
User loop
After the last loop is displayed, the user loop “LOOP 0” comes up again.
User loop „LOOP 0“
The LCD shows the following values one after the other:
Energy accumulated with tariff status
Tariff register 1 (optional)
Volume accumulated
Segment test
Head of the loop
In case of error: message with error code

Operating elements 19/49
Service loop 1 „LOOP 1“
Service loop 1 displays the details of the current measurement.
The LCD shows the following values one after the other:
Head of the loop
Current flow
Current power
TV current temperature hot side,
TR current temperature cold side;
in 2-sec. cycles
Operating time
Operating time with flow
Missing time
Property number, 8-digit
Date
Yearly set day (DD.MM)
Energy: previous year on set day
Volume: previous year on set day
Firmware version
Service loop 2 „LOOP 2“
Service loop 2 displays the measurement period for establishing the maxi-
mum.
The LCD displays the following values one after the other:
Head of the loop
Measurement period for establishing the
maximum

Operating elements 20/49
Service loop 3 („LOOP 3“)
Service loop 3 displays the monthly values.
Head of the loop
…
…
Set day for July 2011
The LCD displays the following values one after the other:
Energy on the set day
Tariff register 1 on the set day
Volume on the set day
Max. flow on the set day,
in 2-sec. cycles with date stamp
Max. power on the set day,
in 2-sec. cycles with date stamp
Max. temperatures on the set day,
in 2-sec. cycles with date stamp
MV for hot side or MR for cold side
Missing time count on the set day
After the last display the previously selected set day is displayed once again.
Note: If the number of months to be read out is changed with the
service software, this will have an impact on the number of re-
trievable months in the LCD.