Siemens UH50 Series Quick guide

Ultraheat / Ultracold UH50 Subject to change without prior notice UH 106-101k Page 1 / 15
Static Heat- and Cold Meter UH50
issue: January 2010
Configuration Instructions UH 106-101k
Static meter for Heating- and Cooling systems
UH50 ULTRAHEAT®
UH50 ULTRACOLD®
UH50 FLOW SENSOR
Version of firmware: 5.15 and higher

Ultraheat / Ultracold UH50 Subject to change without prior notice UH 106-101k Page 2 / 15
Meter for measurement of flow and energy in a heat or cold circuit with water using the ultrasonic
principle. Important properties are:
•Non-wearing due to non-moving parts
•Measuring range of flow 1:100 according to EN 1434, 1:1000 total range
•Any mounting orientation, in flow or return, no setting sections or flow straighteners.
•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
• Big range of communication modules
•2 module slots for using 2 communication modules coincidental
•Also operable as a flow meter, cold or heat/cold meter
•Self-diagnostics
Note: In the following text the term Meter covers the
Heat Meter as well as the Cold Meter and the Flow
Sensor if not mentioned otherwise.
Safety information:
The meter is designed for circulating water of
heating systems (not for drinking water!).
Do not pick up by the electronic unit
Be careful of sharp edges (thread, flange,
measuring tube)
Installation and removal must be performed by
qualified personnel only
Mounting and unmounting are only permitted
when the system is not under pressure
After installation, a tightness test must be
conducted with cold pressure
Only ever use under service conditions,
otherwise dangers can arise and the warranty
may be voided
Breaking the security seal voids the warranty
The 110 V / 230 V versions must only be
connected by an electrician
The lithium batteries must be properly
returned
Lightning protection cannot be ensured; this
must be provided by the building wiring
Only one compartment for the power supply
must be equipped – do not remove the red
locking hatch
General information
The UH50 meter is used for energy consumption
metering in short and long-distance district heating
and in apartment buildings. It is suitable both for cold
metering (alone or in conjunction with metering
quantities of thermal energy) or for pure flowrate
metering in water systems.
Measuring accuracy Class 2 or 3 (EN 1434)
Environment class A (EN 1434) for
indoor installation
Mechanical class M1 *)
Electrical class E1 *)
*) according 2004/22/EG EC directive
Ambient humidity < 93% r. h.
without condensation
Electronic unit
Storage temperature - 20 to 60°C
Max. altitude 2000 m above MSL
Ambient temperature 5 to 55°C
Housing degree of prot. IP 54 per EN 60529
Safety class
Line 110 / 230 V AC II per EN 61558
Line 24 V ACDC III per EN 61558
Response threshold f. ∆T 0.2 K
Temperat. difference ∆T 3 K to 120 K
Temperat. meas. range 2...180°C
Sensors
Type Pt500 or Pt100
per EN 60751
Temperature range 0...150°C
(< 45 mm overall length)
0...180°C
(> 100 mm overall length)
All volume measuring units
(Consider the details on the meter)
Mounting location return of flow
Mounting orientation any
Settling section none
Metrological class 1:100
Temperature range 5 to 130°C *)
Recommended for…
…heat application 10 to 130°C
…cooling application 5 to 50°C
*) national approvals may differ
Maximum temperature 150°C for 2000 h
Maximum overload 2.8 x q
p
Nominal pressure PN16, PN25

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 3 / 15
Nominal flowrate q
p
Overall length
Connection
Maximum flowrate
q
s
Minimum flowrate q
i
Response
threshold (variable)
Pressure lost at q
p
Kv flowrate at p 1
bar
Kv flowrate at p
100 mbar
Weight
m³/h mm G / DN m³/h l/h l/h mbar m³/h m³/h kg
110 G ¾ 1
G 1 1,5
DN20 125 1,7 3
110 G ¾ 150 3,9 1
130
DN20 3
130
DN20 195 5,7 3
G 1¼ 3
DN25 5
150 12 60 24 240 12 3,8 3
3
DN25 5
200 130 28 8,8 2,6
100 32 10 4
DN40 165 25 7,8 7
200 95 48 14 5
270 100 47 15 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 22
15 DN50 30 150 60
6
10 G 2 20 100 40
300
1,5
190
3,5 260 7 35 14 60 14 4,5
1,5
190
2,5 G 1 5 25 10 200 5,6 1,8
0,5
190
1,5 3 15 6 1,2G 1 160 3,8
0,6 1,2 6 2,4 150 1,5
14 4,5
G 1¼
260 12 60 24 180
Tolerance pressure lost: +/- 5%
Small meters (qp 0,6 – 2,5 m³/h)
Overall length 110 mm (thread)
Overall length 130 mm (thread)
Overall length 190 mm (thread)
Overall length 190 mm (flange)
Large meters with threaded joint
qp m³/h PN bar a b c
3.5 16 / 25 260 51 G 1¼ B
6 16 260 51 G 1¼ B
6 16 150 27 G 1¼ B
200
10 16 300 48 G 2 B
Large meters with flange joint
qp m³/h PN bar DN a b Øc Ød Øe
No. of
holes f g
3.5 25 25 260 51 115 85 14 4 68 18
6 25 25 260 51 115 85 14 4 68 18
10 25 40 300 48 150 110 18 4 88 18
270
15 25 50
200
46 165 125 18 4 102 20
25 25 65 300 52 185 145 18 8 122 22
40 25 80 300 56 200 160 18 8 138 24
60 16
25 100
360 68 235
180
190
22 8 158 24
alternative
mounting
option

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 4 / 15
Installation
Based on the dimension drawings, choose a
mounting location with sufficient clearance. Mount
the volume measuring unit between two shut-off
valves in accordance with the arrow on the volume
measuring unit for the direction of flow.
No inlet or outlet sections are necessary. However, if
the meter is installed in the shared return of two
systems, the mounting location must be a sufficient
distance from the T element that forms the junction
(min. 10 ×
××
×DN) to allow the different water
temperatures to mix well.
The sensor can be mounted in ball valves or in
pockets. The sensors must be inserted at least up to
the center of the pipe cross-section.
Cavitation must be avoided over the entire
measuring range by overpressure, i.e. at least 1 bar
at q
p
and approx. 3 bar at q
s
(at 80°C).
If the water temperature is below 10°C or above
90°C, a split mounting is necessary. In this case the
electronic unit is to be mounted separately from the
volume measuring unit.
A meter with a removable control cable may be
separated during the installation. When installation is
done be sure that only paired parts (volume part,
calculator) are connected together.
Ball valve
Example of mounting with a ball valve
(recommended up to DN25)
Welded sleeve
with pocket
Example of mounting with pockets
(recommended above DN25)
Mounting as a cold meter
When mounting a cold meter or combined
heat/cold meter, make sure the black cover on the
measuring tube is oriented to the side or downward
(because of water condensation). The immersion
sleeves should also mounted to the side or
downwards.
The electronic unit must be separated from the
flowrate measuring tube and, for example, mounted
on the wall (split mounting). Make sure that
condensed water cannot run along the connected
pipes into the electronic unit (building a loop
downwards).
cover of flow sensors
Allowed position of the cold meter
Electronic unit
Electronic unit: top view side view
Adapter plate cross-section
Operating elements
The service button and calibration contact are not
accessible until the housing cover is removed.
The calibration contact is additionally protected by a
security seal.
The optical interface permits data communication via
a computer with the necessary service software.

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 5 / 15
−CD button 1 (“Loop“); advances to the next loop
−LCD button 2; advances to the next line within a
loop
−Service button, inside
−Calibration contact, inside (to be operated with a
service tool – not included in scope of supply)
The service button and calibration contact are not
accessible until the housing cover is removed.
The calibration contact is additionally protected by an
security seal.
The optical interface permits data communication via
a computer with the necessary service software.
Displays
The places after the decimal point of displayed
values are indicated by a surrounding border.
Calibrated values can be recognized by the star
symbol shown in addition to the value.
The displays of the meter are arranged on several
levels (LOOPs). LCD button 2 advances the display
of the user loop (LOOP 0) cyclically.
Note: Depending on how the unit is parameterized,
the number of items displayed and the data shown
may differ from this description. Certain button
functions may also be disabled.
User loop (“LOOP 0”)
Head of the loop
Error message with error code number (only in
case of error)
Accumulated quantity of energy with tariff status
Tariff register 1 (optional)
Accumulated volume
Segment test
LCD button 1 is used to switch the display from the
user loop to the selection of service loops
(LOOP 1..n).
Service loop (selection)
Service loop 1
Service loop
...
LOOP n Service loop n
LCD button 1 advances the display to the next loop.
After the last loop, the user loop (LOOP 0) appears
again.
LCD button 2 displays the content of the selected
service loop.
Within a loop, the LCD button 2 is used to advance
to the next line of the display. After the last line of the
display, the first display line appears again.
Service loop 1 (“LOOP 1”)
Head of the loop
Current flowrate
Current power
Current flow/return temperature
at s intervals
Operating time
Operating time with flowrate
Missing time
Property number, 8digit
Date
Yearly set day (DD.MM)
Quantity of energy previous year on set day
Volume for previous year on set day
Firmware version
Service loop 2 (“LOOP 2”)
In service loop 2, the measuring period for maximum
calculation is displayed.
Head of the loop
Measuring period for maximum calculation
Service loop 3 (“LOOP 3”)
Service loop 3 shows the monthly values. LCD
button 1 is used to select a month out of the
previous months. The data for that month are then
opened with LCD button 2. Each further press of
LCD button 2 shows the next value for the selected
month.
Head of the loop
...
Set day for December 005
Set day for November 005
...
using LCD button :



Quantity of energy on the set day
Tariff register 1 on the set day
Volume on the set day
Max. flowrate on the set day,
at s intervals with date stamp
LCD-
button 1
LCD-
button 2
Optical
Interface
Calibration Contact *)
*) Accessible after removal of the cover
Service button *)

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 6 / 15
Max. power on the set day,
at s intervals with date stamp
Max. temperatures on the set day,
at s intervals with date stamp
for flow and return maximum
Missing time count on the set day
After the last display, the previously selected set day
is displayed again. Pressing LCD button 1 selects
the next set day.
Notice: If the number of months to be read out is
changed with the service software, this will have an
impact on the number of retrievable months in the
LCD.
Service loop 4 (“LOOP 4”)
Service loop 4 shows the unit parameters. LCD
button 2 calls the displays one after the other.
Head of the loop
Current tariff,
at s intervals with threshold value 1
Measuring interval for flowrate
Measuring interval for temperature
Module 1: Mbus module
Mbus primary address 1
Mbus secondary address 8digit
Module : pulse module; chan. 1 = energy
quantity, Channel = volume, at s intervals
Significance for energy quantity pulses *)
Significance for volume pulses *)
Pulse duration in ms *)
*) for “fast pulses”
Previous year’s values
The electronic unit stores the meter readings for
quantity of energy, volume, the tariff register, missing
time, and flowrate measuring time as well as the
current maxima for flowrate, power, temperature
difference, flow temperature, and return temperature
with their date stamps on a yearly set day.
Monthly values
The electronic unit stores the meter readings for
quantity of energy, volume, the tariff register, missing
time, and flowrate measuring time as well as the
monthly maxima for flowrate, power, temperature
difference, flow temperature and return temperature
with their date stamp for up to 60 months on the set
day of each month.
Note: The standard time used is Central European
Time (CET). If daylight-saving time is activated,
storage will be performed accordingly.
The monthly values can also be read out via the
optical and the 20 mA interface.
Resolution of the display
kWh
MWh *)
MJ
GJ *)
m³
*) Places after decimal point "blinking", "static" or "suppressed"
10 15 25 402,5 3,5 60
Nom. flowrate in m³/h
0,01 GJ
m³/h
0,1 GJ
0,01 MWh
0,001 GJ
0,001 MWh
1 kWh
1 MJ
0,001 m³/h 0,01 m³/h
0,01 m³ 0,1 m³
0,6
The number of places after the decimal point of a
value is based on the chosen measurement path
and the chosen dimension.
Power supply
The UH50 can be powered from a power supply
module or with a battery.
The lifetime of battery depends on the type of battery
and on the requirements (e.g. short timebase,
analog module etc.).
Requirements
(for measuring timebase Q = 4 s
and measuring timebase T = 30 s)
6 years
11 years 16 years
Standard pulses
M-bus read-out (max. each 15 min.),
CL module
2x AA
C D
M-bus fast read-out, fast pulses,
analog module, radio module
D -- --
Automatic power supply detection
The power supply unit detects whether a line voltage
is applied. This signal is routed to the UH50. That
enables the device to detect automatically whether it
is being powered from a battery or power supply unit.
Power supply modules
24 V AC/DC 110 V AC, 230 V AC
Pollution degree per EN 61010
(no or only dry, non-
conductive soiling)
Ambient temperature + 5 .. + 50°C
Storage temperature - 20.. + 60°C
Back-up time during power failure
(power reserve) > 20 minutes
24 V safety extra-low voltage
Voltage 12..36 V AC or 12..42 V DC
Frequency 50 / 60 Hz or DC
Galvanic isolation 1000 V DC
Power consumption maximal 0.8 VA
Terminals 2 x 1.5 mm²
For connecting cable about, Ø 5.0..6.0 mm

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 7 / 15
110 V or 230 V alternating voltage
Voltage 85..121 V AC
or 196..253 V AC
Type Safety class II
Frequency 50 / 60 Hz
Line voltage max. 10% of the nom.
fluctuations voltage
Overvoltage category II
per EN60010 2500 V impulse voltage
Power consumption maximal 0.8 VA
Relative humidity less than 93 % for T < 50°C
Cable length 1.5 / 5 / 10 m
Fuse protection 6 A MCB
Interfaces of the electronic unit
The UH50 meters are equipped with an optical
interface per EN 62056-21:2002 as standard.
Moreover, up to two of the following communication
modules can be used for remote reading (for
restrictions pay attention):
•Pulse module (pulses for quantity of energy /
volume / unit status / tariff register 1 / tariff
register 2; isolated, bounce-free)
•CL module (passive 20 mA current loop per EN
62056-21:2002)
•M-bus module per EN 1434-3, fixed and
extended, variable protocol (also for coupling
with a suitable controller)
•M-bus module G4
•M-bus module G4-MI with 2 pulse inputs
•Analog module
•Radio module
These modules are have no effect on consumption
metering and can therefore also be replaced at any
time without violating the security seal.
Terminals
Multipolar terminals are used for connecting external
cables to the modules.
Strip-back length: 5 mm
Connection capacity
−rigid or flexible, 0.2 – 2.5 mm²
−flexible with end ferrules, 0.25 - 1.5 mm²
−conductor sizes 26 - 14 AWG
Multiple-conductor connection (2 conductors of
same cross-section)
−rigid or flexible, 0.2 – 0.75 mm²
−flexible with end ferrules without plastic
sleeve, 0.25 – 0.34 mm²
−flexible with TWIN ferrules with plastic
sleeve, 0.5 – 0.75 mm²
Recommended screwdriver: 0.6 x 3.5 mm
Tightening torque: 0.4 Nm
Permissible combinations of modules
Pulse
module
AM = Analog
module
MB; MB G4, MB MI
= M-bus module
CL = CL module
RM = Radio module
AM (5)
„standard“
„fast“ *)
MB
MB G4
CL
RM
AM
yes yes yes yes
(4)
yes yes yes
„standard“
yes
yes (3) yes (2) yes (4)
yes yes yes
Pulse module **)
„fast“
no no no no no no no
MB
yes yes yes
yes (4)
yes
yes (1)
yes
MB G4
yes yes yes yes yes
yes (1)
yes
MB MI
yes yes yes yes yes
yes (1)
yes
CL
yes yes yes
yes (1) yes (1)
no
yes
Slot for module #1 can be equipped with ...
RM
no no no no no no no
Restrictions:
*) only 1 module with fast pulses is possible;
only permissible on slot 2;
min. pulse duration :
- 2 ms, if pulse module 1 not fitted
- 5 ms, if pulse module 1 fitted
**) Subsequent mounting of a further pulse module
in module slot 1 can result in changed output values
for module 2!
(1) For M-bus with fast read out, the CL read-out
can take up to 40 s
(2) Pulse length of the fast pulses min. 5 ms
(3) The first and second channel can be
parameterized individually
(4) The secondary address for both modules can
only be changed via module No. 1
(5) The analog module is not possible in module
slot 2, when the meter has a power supply module
110 V / 230 V.
Pulse module

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 8 / 15
The pulse module permits the output of pulses that
can be derived from the quantity of energy, the
volume, tariff register 1 or tariff register 2. Two
channels are available whose functions can be
parameterized with the service software.
Output takes the form of standard pulses or “fast
pulses”. The pulse duration is identical for channel 1
and channel 2.
Note: If two pulse modules are plugged, please note
the restrictions!
Parameter setting for standard pulses
Output mode Output value
CE
(count energy) Pulses for quantity of energy
Chan.1
C2
(count tariff 2) Pulses for tariff register 2
CV
(count volume) Pulses for volume
CT
(count tariff 1) Pulses for tariff register 1
Channel 2
RI
(ready indication)
Pulses for the operating states
"Ready / Fault"
Parameter setting for “fast pulses”
Channel 1 Channel 2
CV (count volume)
CE
(count energy) - (no function)
CV (count volume)
CV
(count volume) - (no function)
CV (count volume)
CE / CV *)
(count energy / count volume) - (no function)
*) automatic output of the higher pulse rate
Labeling pulse module
Display in LCD CE, C2, CV, CT or RI
Type open collector
Voltage maximal 30 V =
Current maximal 30 mA
Dielectric strength 500 V
rms
against ground
Classification OB (per EN 1434-2)
Voltage drop approx. 1.3 V at 20 mA
Classification OC (per EN 1434-2)
Voltage drop approx. 0.3 V at 0.1 mA
Output connection
(standard version):
A special version of the pulse module is available
with an Opto-MOS output.
Advantages: low voltage drop and polarized
(bipolar).
Standard pulses
Standard pulse significances
kWh *)
MJ *)
m³
10 15 25 402,5 3,5 60
Nom. flowrate in m³/h
10 MJ
0,6
1 kWh 10 kWh
1 m³0,1 m³
100 MJ
1 MJ
*) depending on the unit for heat display
Pulses for quantity of energy, volume, tariff
register
Period duration > 200 ms
Pulse duration 100 ms conducting
Pulses for operating states:
“Ready” pulsed “conducting”, i.e.
0.1…0.25 ms pulse duration,
500 ms period
“Fault” constantly “non-conducting”
Fast pulses
Note: In battery operation, a D cell is required!
For applications, such actuating controllers or as
flowrate transmitters, higher pulse rates are required.
The parameters required for this (pulse significance,
pulse duration), can be configured with the service
software.
The maximum pulse frequency is 33 Hz.
The following can be set:
•Pulse type: “linear” or “scaled” pulses *)
•Pulse output: energy or volume
•Pulse duration, if only 1 pulse module is fitted:
from 2 ms to 100 ms in steps of 1 ms;
Pulse duration, if 2 pulse modules are fitted:
von 5 ms to 100 ms in steps of 5 ms
The pulses can be received and evaluated with a
suitable device. The settings must be made in
accordance with the information on the data sheet of
the controller.
*) Linear pulses are output proportionally to the
measured value. In the case of scaled pulses, the
number of pulses at the upper and lower end of the
range can be defined. In this case, the pulse
receiving device can detect, for example, a
connection error.
Linear pulses Scaled pulses (example)
CL module

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 9 / 15
The CL module can be used to set up a point-to-
point link enabling the meter to be read remotely, for
example, at the front door.
Display in LCD CL (current loop)
Standard per EN 1434-3
Type passive current loop
Baudrate 2400 Baud, fest
Isolation galvanic
Polarity yes
Voltage 30 V maximal
Current 30 mA maximum
Voltage drop < 2 V at 20 mA
Literature TKB 3415
Data scope
- Update on each read-out
Property number; unit number; firmware version;
fault messages; missing time; operating time;
quantity of energy; tariff register; volume; mounting
location; adjustment values; unit configuration data;
measuring range; M-bus addresses; system date
and time; previous year’s values with set day for
quantity of energy, tariff and volume; maximum
power; fault duration and 18 monthly values for
quantity of energy, tariff register, volume, missing
time, maximum power, maximum flowrate,
measuring period with maxima for power, flowrate
and temperatures; actual values for power, flowrate
and temperatures.
M-bus module G4
Display in LCD MB, G4 alternating
Please read the appropriate instructions manual for
more information (attached to the meter/module).
M-bus module MI
Display in LCD MI, G4 alternating
Please read the appropriate instructions manual for
more information (attached to the meter/module).
Analog module
Display on LCD AM (analog module)
Please read the appropriate instructions manual for
more information (attached to the meter/module)
.
The analog module converts a selectable measured
value of the meter into an analog output signal
(2 output signals, channel 1, channel 2).
The following measured values can be selected:
-power
-Flowrate
-Flow temperature
-Return temperature
-Temperature difference
The following can be selected as the output signal:
-0..20 mA
-4..20 mA
-0..10 V
Radio module
Display on LCD RM(radio module)
Please read the appropriate instructions manual for
more information (attached to the meter/module) .
Technical data radio
Frequency 433 MHz
Range up to 200 meters
(with integrated antenna)
Read-out frequency max. 1 read-out per day
(average)
Technical data pulse counters
Pulse counters: 2 inputs for external pulses
Counter range: 0..99,999,999
Pulse significance: 0.001...999.99
Counter identifier: 8-digit
Min. pulse length: 50 ms
Max. pulse rate: 5 pulse/s when using both
channels
Max. pulse rate: 10 pulse/s when using only
one channel
The radio module reads the data either when data is
requested or only once per day.
The meter must be functioning in normal mode.
The data are packed and output in various telegram
types.
Tariff control (optional)
The following options are available for tariff control.
Note: The summation of the quantity of energy and
volume in the standard registers is performed
independently of the tariff situation!
Threshold value tariff (tariffs T2, 3, 4, 5, 6)
Tariff registers 1, 2 and 3 can be controlled via up to
3 threshold values.
Either the quantity of energy or the volume can be
summated in the tariff registers.
The threshold values can be derived from the
flowrate (tariff T2), the power (tariff T3), the return
temperature (tariff T4), the flow temperature (tariff
T5) or the temperature difference (tariff T6).

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 10 / 15
Supplied quantity of energy (tariff T7)
In tariff register 1, a quantity of energy is summated
that is calculated from the flow temperature (instead
of from the temperature difference).
Returned quantity of energy (tariff T8)
In tariff register 1, a quantity of energy is summated
that is calculated from the return temperature
(instead of from the temperature difference).
Heat/cold meter (tariff T9)
In tariff register 1, the measured quantity of cold; in
tariff register 2, the measured quantity of energy is
summated. In both cases a threshold can be defined
via the flow temperature (“cold threshold”, “heat
threshold”).
Temperature above “heat threshold” and
temperature difference > +0.2 K --> quantity of heat
is acquired
Temperature below “cold threshold” and temperature
difference < -0.2 K --> quantity of cold is acquired
Tariff control via timer switch (tariff T10)
For tariff control, one switch-off time and one switch-
on time per day can be defined. At the switch-on
time, summation of the quantity of energy or volume
is started in tariff register 1; at the switch-off time, it
is ended.
Tariff control via M-bus (tariff T11)
In tariff registers 1, 2 and 3, either the quantity of
energy or the volume can be summated. With the
relevant M-bus command, one of the 3 tariffs can be
activated or all tariffs can be deactivated.
Surcharge quantity tariff by means of return
temperature (tariff T12)
The quantity of energy is summated depending on
the return temperature in tariff registers 1 or 2.
The summated quantity of energy is calculated from
the difference of the return temperature from the
defined return temperature threshold (instead of
from the temperature difference).
Above return threshold: T1 is summated
Below return threshold: T2 is summated
Display of the tariff situation on the LCD
The current tariff status is shown in the user loop
together with the quantity of energy or the volume.
No tariff status is shown for tariffs T7 and T8.
for tariffs T , T3, T4, T5, T6, T10, T11 and T1
no tariff register active
tariff register 1 active
tariff register active
tariff register 3 active
for tariff T9 (cold/heat meter)
no tariff register active
tariff register 1 active
tariff register active
The type of tariff and the associated parameters are
displayed in service loop LOOP 4.
for T , T3, T4, T5, T6
at intervals of s with threshold value 1/ /3
for T7
for T8
for T9;
at intervals of s
for T10;
switching times at intervals of s
for T11
for T1
The contents of the tariff registers are displayed in
the user loop after the quantity of energy.
for tariffs T , T3, T4, T5, T6, T10, T11 and T1
tariff register 1
tariff register
tariff register 3 (not for T1 )
for tariff T7
for tariff T8
for tariff T9
Error messages
The meter constantly performs self-diagnostics and
can display various error messages.
Error Error / action to be taken:
code:
F0 No flow;
air in measuring unit / pipe, vent pipe
F1 Interruption of flow sensor
F2 Interruption of return sensor
F3 Electronic for temperature evaluation defective
F4 Battery empty; replace!
F5 Shortcircuit flow sensor
F6 Shortcircuit return sensor
F7 Fault in the internal memory
F8 F1, F , F3, F5 or F6 pending for longer than 8 hours.
No more measurements are performed.
F9 Error in the electronics
Message F8 has to be reset in parameter setting
mode (manually or service software). All other error
messages are cleared automatically once the error
has been corrected.

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 11 / 15
Log functions
Logbook
In the internal logbook, metrologically relevant
events (errors, states, actions) are stored in
chronological order with their time of occurrence.
The events acquired are predefined. The data of the
logbook cannot be deleted.
Each event is stored in a separate 4-level shift
register; the overflows are transferred to a 25-level
circulating buffer. Therefore, at least the last 4 times
can be traced for each event.
In a monthly register, the error states are stored for
the current month and for the past 18 months
(without time stamp).
Ser
No. Type Description
1 F0 = Air in measuring tube
2 F1 = Interruption flow sensor
3 F2 = Interruption return sensor
4 F3 = Error temperature electronics
5 F5 = Short-circuit flow sensor
6 F6 = Short-circuit return sensor
7 F8 = Sensor error > 8 hours
8
Error occurs or back-to normal
F9 = ASIC error
9 Above max. temperature in the volume
measuring unit
10 Below min. temperature in the volume
measuring
11 Max. flowrate qs was exceeded
12 Soiling prewarning
13 Line voltage off
14
State occurs or ends
CRC error occurred
15 Adjustment values parameterized
16 F7-(EEPROM) pre-warning
17 Reset made
18 Date / time parameterized
19 Yearly set day parameterized
20 Monthly set day parameterized
21 Master reset performed
22 All times deleted
23 Missing time deleted
24
Event occurs
Maxima deleted
Read-out is performed via the optical interface with
the service software.
Data logger (optional)
The data logger permits the archiving of data that the
user can select from a predefined set of values. The
data logger contains four archives whose 8 channels
can be assigned.
The data can be assigned to any of the channels.
Archive Timebase Storage
depth
Averaging
time for
maximum
Hourly
archive 1 hour 45 days 1 hour *)
Daily
archive 1 day 65 days 1 hours
Monthly
archive 1 month 15 months 1 hours
Yearly
archive 1 year 15 years 1 hours / 24 hours
*) For a shorter measuring period than 1 hour, the
largest value from the maximum values calculated
within one hour applies.
The data are recorded with the value and time
stamp.
Parameterizing and read-out is performed via the
optical interface with the service software .
Note: Data transmission is in a manufacturer-specific
format.
Value set for data to be recorded
Meter readings
at the end of the period
for...
Quantity of energy
Tariff register 1, 2, 3
Volume
Operating duration *)
Fault duration *)
Pulse input 1
Pulse input 2
*) depending on parameter
setting: hours or days
Instantaneous values
at the end of the period
for...
Power
Flowrate
Flow temperature
Return temperature
Temperature difference
Error display
Maximum for...
Power
Flowrate
Flow temperature
Return temperature
Temperature difference

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 12 / 15
Order codes (type number key)
T ype code: U H 5 0  X Y Y X  Y Y X X  Y X X  Y X Y X  Y Y X
1. Meter type and mounting location
2. Nominal flo rate
3. Control cable/type/electronic unit
4. Country / here used
5. Manufacturer’s label
6. Sensor type and connection method
7. Sensor design
8. Po er supply
9. Communication 1 / module 1
10. Communication 2 / module 2
11. Data logger
12. Calibration/conformity
13. Energy unit
Mandatory data for the order designation
(label plate data)
Mandatory data for Hard are
dependent features
Order codes for label plate data
1. Type of meter and mounting location Code
Heat meter for two wire temperature measurement
and for mounting in return A
Heat meter for two wire temperature measurement
and for mounting in flow B
Combined heat/cold meter for two wire temperature
measurement and for mounting in return (only in
connection with temperature sensor Pt500)
C
Flow sensor D
Cold meter for two wire temperature measurement
and for mounting in return (only in connection with
temperature sensor Pt500)
G
Heat meter for four wire temperature measurement
and for mounting in return L
Heat meter for four wire temperature measurement
and for mounting in flow M
Combined heat/cold meter for four wire temperature
measurement and for mounting in return (only in
connection with temperature sensor Pt500)
N
Cold meter for four wire temperature measurement
and for mounting in return (only in connection with
temperature sensor Pt500)
T
2. Nominal flowrate Code
Nominal flowrate 0.6 m³/h, length 110mm, nominal
pressure PN16, connection G ¾ B 05
Nominal flowrate 0.6 m³/h, length 110mm, nominal
pressure PN25, connection G ¾ B 06
Nominal flowrate 0.6 m³/h, length 190mm, nominal
pressure PN16, connection G 1 B 07
Nominal flowrate 0.6 m³/h, length 190mm, nominal
pressure PN25, connection flanged DN 20 08
Nominal flowrate 0.6 m³/h, length 190mm, nominal
pressure PN25, connection G 1 B 09
Nominal flowrate 1.5 m³/h, length 110mm, nominal
pressure PN16, connection G ¾ B 21
Nominal flowrate 1.5 m³/h, length 110mm, nominal
pressure PN25, connection G ¾ B 22
Nominal flowrate 1.5 m³/h, length 190mm, nominal
pressure PN16, connection G 1 B 23
Nominal flowrate 1.5 m³/h, length 190mm, nominal
pressure PN25, connection flanged DN 20 24
Nominal flowrate 1.5 m³/h, length 190mm, nominal
pressure PN25, connection G 1 B 25
Nominal flowrate 1.5 m³/h, length 130mm, nominal
pressure PN16, connection G 1 26
Nominal flowrate 1.5 m³/h, length 130mm, nominal
pressure PN25, connection G 1 27
Nominal flowrate 2.5 m³/h, length 130mm, nominal
pressure PN16, connection G 1 B 36
Nominal flowrate 2.5 m³/h, length 130mm, nominal
pressure PN25, connection G 1 B 37
Nominal flowrate 2.5 m³/h, length 190mm, nominal
pressure PN16, connection G 1 B 38
Nominal flowrate 2.5 m³/h, length 190mm, nominal
pressure PN25, connection flanged DN 20 39
Nominal flowrate 2.5 m³/h, length 190mm, nominal
pressure PN25, connection G 1 B 40
Nominal flowrate 3.5 m³/h, length 260mm, nominal
pressure PN16, connection G 1¼ B 45
Nominal flowrate 3.5 m³/h, length 260mm, nominal
pressure PN25, connection flanged DN 25 46
Nominal flowrate 3.5 m³/h, length 260mm, nominal
pressure PN25, connection G 1¼ B 47
Nominal flowrate 6.0 m³/h, length 260mm, nominal
pressure PN16, connection G 1¼ B 50
Nominal flowrate 6.0 m³/h, length 260mm, nominal
pressure PN25, connection flanged DN 25 52
Nominal flowrate 6,0 m³/h, length 150mm, nominal
pressure PN16, connection G 1 ¼ B 55
Nominal flowrate 10 m³/h, length 300mm, nominal
pressure PN16, connection G 2 B 60
Nominal flowrate 10 m³/h, length 300mm, nominal
pressure PN25, connection flanged DN 40 61
Nominal flowrate 10 m³/h, length 200mm, nominal
pressure PN16, connection G 2 B 63
Nominal flowrate 15 m³/h, length 270mm, nominal
pressure PN25, connection flanged DN 50 65
Nominal flowrate 15 m³/h, length 200mm, nominal
pressure PN25, connection flanged DN 50 69
Nominal flowrate 25 m³/h, length 300mm, nominal
pressure PN25, connection flanged DN 65 70
Nominal flowrate 40 m³/h, length 300mm, nominal
pressure PN25, connection flanged DN 80 74
Nominal flowrate 60 m³/h, length 360mm, nominal
pressure PN16, connection flanged DN 100 82
Nominal flowrate 60 m³/h, length 360mm, nominal
pressure PN25, connection flanged DN 100 83
3. Control cable / type / electronic unit Code
Compact version (until 90°C, with 0.3m control cable) A

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 13 / 15
Split version with 1.5m control cable C
Split version with 3.0m control cable D
Split version with 5.0m control cable E
Compact version (until 90°C, with 0.3m control
cable),control cable removable M
Split version with 1.5m control cable, control cable
removable P
Split version with 3.0m control cable, control cable
removable Q
Split version with 5.0m control cable, control cable
removable R
4. Country / where used Code
Dial plate for Armenia (Armenian) AM
Dial plate for Austria (German) AT
Dial plate for Bosnia-Herzegovina (Croatian) BA
Dial plate for Belgium (French/Flemish) BE
Dial plate for Bulgaria (Bulgarian) BG
Dial plate for Belarus (Russian) BY
Dial plate for Switzerland (German/French) CH
Dial plate for China (Chinese) CN
Dial plate for Serbia and Montenegro (Serbian) CS
Dial plate for Czech Republic (Czech) CZ
Dial plate for Germany (German) DE
Dial plate for Denmark (Danish) DK
Dial plate English neutral EN
Dial plate for Spain (Spanish) ES
Dial plate for Finland (Finnish) FI
Dial plate for Great Britain (English) GB
Dial plate for Greece (English) GR
Dial plate for Croatia (Croatian) HR
Dial plate for Hungary (Hungarian) HU
Dial plate for Iceland (Icelandic) IS
Dial plate for Italy (Italian) IT
Dial plate for Japan (Japanese) JP
Dial plate for Kazakhstan (Russian) KZ
Dial plate for Lithuania (Lithuanian) LT
Dial plate for Macedonia (Macedonian) MK
Dial plate for Mongolia (Mongolian) MN
Dial plate for The Netherlands (Dutch) NL
Dial plate for Poland (Polish) PL
Dial plate for Romania (Romanian) RO
Dial plate for Russia (Russian) RU
Dial plate for Sweden (Swedish) SE
Dial plate for Slovak Repuplic (Slovakian) SK
Dial plate for Southern Tyrol I2
Dial plate for Ukraine (Ukrainian) UA
Dial plate for Uzbekistan (Russian) UZ
5. Manufacturer's label Code
Logo SIEMENS 06
6. Sensor type and method of connection Code
Flow sensor (without temperature sensors) 0
Sensor Pt100, removable, not mounted in the tube A
Sensor Pt100, removable, mounted in the tube B
Sensor Pt100, removable, mounting in the tube as an
option C
Sensor Pt100, removable, mounted in the tube within
a pocket D
Sensor Pt500, removable, not mounted in the tube E
Sensor Pt500, removable, mounted in the tube F
Sensor Pt500, removable, mounting in the tube as an
option G
Sensor Pt500, removable, mounted in the tube within
a pocket H
Sensor Pt100, not removable, not mounted in the tube N
Sensor Pt100, not removable, mounted in the tube P
Sensor Pt100, not removable,
mounting in the tube as
an option R
Sensor Pt100, not removable, mounted in the tube
within a pocket S
Hardware-dependent features
7. Sensor type Code
Without temperature sensors 00
Type DS, 25 bar/150°C/ M10x1 / length 27,5mm,
cable length 1,5m 0B
Type DS, 25 bar/150°C/ M10x1 / length 27,5mm,
cable length 2,5m 0C
Type DS, 25 bar/150°C/ M10x1 / length 38mm, cable
length 1,5m (only Pt500) 0D
Type DS, 25 bar/150°C/ M10x1 / length 38mm, cable
length 2,5m (only Pt500) 0E
Type PS, 16 bar/150°C/ Ø5,2x45mm, cable length
1,5m 0H
Type PS, 16 bar/150°C/ Ø5,2x45mm, cable length
5m 0J
Type PL, 25 bar/180°C/ Ø6x100mm, cable length 2m 0M
Type PL, 25 bar/180°C/ Ø6x100mm, cable length 5m
(only Pt500) 0N
Type PL, 25 bar/180°C/ Ø6x150mm, cable length 2m 0P
Type PL, 25 bar/180°C/ Ø6x150mm, cable length 5m
(only Pt500) 0Q
8. Power supply Code
Without power supply 0
Standard battery for 6 years A
Battery for 6 years for all applications B
Battery for 11 years (C cell) C
Battery for 11 years E
Battery for 16 years (d cell) F
Battery without printing of the year G
Power supply 24V AC/DC with plug M
Power supply 230V AC with 1.5m cable N
Power supply 230V AC with 5m cable P
Power supply 230V AC with 10m cable Q
Power supply 110V AC with 1.5m cable R
Power supply 110V AC with 5m cable S
Power supply 110V AC with 10m cable T
9. Communication module 1 Code
No module in slot1 0
Analog module in slot1 A
M-Bus module G4 in slot1 B
CL-module in slot1 C
M-bus 30s module in slot1 D
M-bus module G4-MI with 2 pulse inputs N
Pulse module with OptoMOS in slot1 L
Pulse module in slot1 P
10. Communication module 2 Code
No module in slot2 0
Analog module in slot2 A
M-Bus module G4 in slot2 B
CL-module in slot2 C
M-bus 30s module in slot2 D
Pulse module with OptoMOS in slot2 L
Pulse module in slot2 P
Radio module in slot2 R
Radio module with external antenna in slot2 X
11. Data logger Code
Without data logger 0
Data logger with 8 channels 8
12. Calibration / conformity Code
certified acc. to national regulations CL
compliant to MID class 2 M2
compliant to MID class 3 M3
compliant with CEN 1434, class 2 T2
compliant with CEN 1434, class 3 T3
compliant acc. to national regulations TL
13. Energy unit Code
Display: kWh (until qp 10) A

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 14 / 15
Display: MWh with 3 decimal places (as of qp 15 with
2 decimal places) B
Display: MJ (until qp 3) C
Display: GJ with 3 decimal places (as of qp 3.5 with 2
decimal places) D
Display: kWh (until qp 10), flashing G
Display: MWh with 3 decimal places (as of qp 15 with
2 decimal places), flashinh H
Display: GJ with 3 decimal places (as of qp 6 with 2
decimal places), flashing K
Display: m³ (for the flow meter) with 2 decimal places
(as of qp 40 with 1 decimal place) V
Further features
Measurement dynamics Code
Dynamic range 1:100 C
other ranges on request
Modules as accessories
Power supply modules Code
Power supply 110V AC with 10m cable WZU-AC110-100
Power supply 110V AC with 1.5m cable WZU-AC110-15
Power supply 110V AC with 5m cable WZU-AC110-50
Power supply 230V AC with 10m cable WZU-AC230-100
Power supply 230V AC with 1.5m cable WZU-AC230-15
Power supply 230V AC with 5m cable WZU-AC230-50
Power supply 24V AC/DC with plug WZU-ACDC24-00
Power pack 230 V AC for analog
module WZU-AM
WZR-NE
Communication modules Code
Analog module WZU-AM
CL-Module WZU-CL
M-Bus module acc. to DIN 1434-3 (G2-
generation 2 – recommended until
meter FW 5.14)
WZU-MB
M-bus module (G2) with 30s minimum
reading cycle WZU-MB-30
M-bus module (G2) with guaranteed
data set WZU-MB-GR
M-
Bus module G4 acc. to EN 13757 and
DIN 1434-3 (G4 - Generation 4 - FW
5.15 and higher)
WZU-MB-G4
M-
Bus module G4 acc. to EN 13757 and
DIN 1434-3 (G4 - Generation 4 - FW
5.15 and higher) with 2 pulse inputs
WZU-MI
Pulse module WZU-P2
Pulse module with OptoMOS WZU-P2L
GSM Module with 2 pulse inputs, with
battery; SMS support WZU-GM
GPRS module with ext. antenna
(magnetic attachment) and UH50 power
pack 110..230V / cable 5m; with
interface for up to 8 M-Bus
meter to be read over GPRS; amongst
others Email support
WZU-GPRS
Radio module WZU-RM
Radio module with external antenna WZU-RM-EXT
For mounting of temperature
sensors Code
Adapter for ball valves to install temp-
erature sensors DS length 38 mm WZT-KA
Mounting accessories for tubes Code
Kit extension from 110 mm G ¾B to
130 mm G 3/4 B (with seals)
WZM-V130
Kit extension from 110 mm G ¾B to
190 mm G 1 B (in pairs with seals)
WZM-V190
Spacer for heat meter DN 100 - 360
mm PN 16, incl. sealing disks
WZM-F360.100-16
Spacer for heat meter DN 100 - 360
mm PN 25, incl. sealing disks
WZM-F360.100-25
Notes
•All regulations on the use of meters must be
observed.
•Cavitation in the system must be avoided.
•Meters up to DN25 may only be installed with
directly immersed sensors according to German
calibration law!
•Install the unit in such a way that no water can
enter the electronic unit during operation.
•User seals may only be removed by authorized
persons for service purposes and must be
replaced afterwards.
•The unit is supplied with Installation and Service
Instructions and with Operating Instructions.
•No later than 30 seconds after installation, the
meter detects the plugged modules automatically
and is ready for communication or pulse output.
•The type of modules plugged can be displayed in
the service loop depending on how the display is
parameterized.
•For fast pulses, the parameters must be set
accordingly with the service software.
•Up-to-date versions of all instructions can be
found in the Internet at www.siemens.com/sbt
Siemens AG
Building Technologies
Please contact our next sales office

Ultraheat / Ultracold UH50 Configuration Instructions UH 106-101k Page 15 / 15