UH50 Ultrasound Heat Meter
Subject to change without prior notice
UH 106-101c
Page 1 / 13
Heat Meter Ultrasonic
®
UH50
Configuration Instructions
UH 106-101c
Version: June 2007
Safety information:
)
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 calibration 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 heat meter is used for heat 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
Electronic unit
Storage temperature
- 20 to 60°C
Max. height
2000 m above MSL
Ambient temperature
5 to 55°C
Ambient humidity
< 93 % rel.
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
Mounting location
return of flow
Mounting orientation
any
Settling section
none
Metrological class
1:100
Temperature range
10 to 130°C
Maximum temperature
150°C for 2000 h
Maximum overload
2.8 x q
p
Nominal pressure
PN16
, PN25
Nomi
nal flowrate
q
p
Overal
l l
ength
Max
imum
flowrate
q
s
Mi
nimu
m flow
ra
te
q
i
Res
pons
e thres
hold
(v
ar
ia
b
le)
Pres
sure lo
st at
q
p
Kv
flowrate
at
∆
p 1
bar
K
v fl
owrate at
∆
p
100 m
bar
Wei
ght threa
d
Weig
ht fla
nge
m³/h
mm
m³/h
l/h
l/h
mbar
m³/h
m³/h
kg
kg
0.6
110
1.2
6
2.4
150
1.5
0.5
1
0.6
190
1.2
6
2.4
150
1.5
0.5
1.5
0.6
DN20
1.2
6
2.4
125
1.7
0.5
3
1.5
110
3
15
6
150
3.9
1.2
1
1.5
130
3
15
6
160
3,8
1,2
1,5
1.5
190
3
15
6
160
3,8
1.2
1.5
1.5
DN20
3
15
6
160
3.8
1.2
3
2.5
130
5
25
10
200
5.6
1.8
1.5
2.5
190
5
25
10
200
5.6
1.8
1.5
2.5
DN20
5
25
10
195
5.7
1.8
3
3.5
260
7
35
14
65
13.7
4.3
3
5
6
260
12
60
24
150
15.5
4.9
3
5
10
300
20
100
40
100
31.6
10
4
10
DN40
20
100
40
165
24.6
7.8
7
15
270
30
150
60
100
47,4
15
8
25
300
50
250
100
105
77,2
24,4
11
40
300
80
400
160
160
100
31,6
13
60
360
120
600
240
115
176,9
56
22
Small heat meters
Overall length 110 mm
Overall length 130 mm