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Woltmann Water Meter is manufactured in compliance with international standard. Please
confirm that the consumption is within the scope of following flow rate to ensure the
lifespan of water meter. In addition, please familiarize yourself with product technical
specifications prior to installing WT-Series water meter, such as CMD, water quality,
installation environment, etc.
2.1. Approved Meter Data
EU directives
MID (2014/32/EU)
Standard
Mechanical environment class
Electromagnetic class E1
Accuracy class 2
Environmental Class O
Climatic class +5 °C to +55 °C.
Temp. of medium in flow sensor 0.1°...30°
2.2. Metrological Data
DN (mm)/
Inch
m
Q1 (m3/h)
m
Q2 (m3/h)
m
Q3 (m3/h)
m
Q4 (m3/h)
Ratio Q3/Q1
Ratio R2/Q1
Flange connection
mm
Construction length L
Installation
orientation
Temperature Class
Water temperature
°C
range
2. Technical Data
OIML (R 49:2013)
M1
50/
Unit
(2")
3
0.156
0.394
/h
3
0.25
0.63
/h
3
25
/h
3
31.25
78.75
/h
-
-
-
200
200
-
-
Cold water meter
80/
100/
(3")
(4")
0.625
1.56
1.0
63
100
250
125
313
160
1.6
JIS 7.5K
250
300
H
T30
0.1 to 30
Page 4
150/
200/
250/
(6")
(8")
(10")
2.5
3.938
2.5
4.0
6.3
400
630
500
787.5
350
450
300/
(12")
6.25
10
1000
1250
500
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