Technical data – KROHNE H250 M40 EN User Manual
Page 78
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TECHNICAL DATA
78
H250 M40
www.krohne.com
11/2012 - 4000640702 MA H250 M40 R02 en
H250U - Vertical installation position
Reference condition for gas measurements:
Reference condition for gas measurements:
Reference condition for gas measurements:
Reference condition for gas measurements:
Flow measurements for gases are attributed to
SCFM or SCFH: Volume current in standard state 15°C - 1.013 bar abs. (ISO 13443)
Measuring span:
10 : 1
Flow values:
Values = 100%
Water 20°C / 68°F
Air: 20°C [68°F], 1,013 bar abs. [14,7 psia]
Flow direction
vertical downwards
EN
ASME
Cone
Wasser [GPH]
Luft [SCFM]
Pressure loss
[psig]
DN15
½
"
K 15.1
17.2
0.99
2.57
K 15.2
29.1
1.55
2.62
K 15.3
44.9
2.48
2.65
K 15.4
68.7
3.72
2.94
K 15.5
111
6.20
3.23
K 15.6
172
9.92
4.26
K 15.7
291
17.4
7.64
K 15.8
396
24.8
12.3
DN25
1"
K 25.1
304
18.6
1.42
K 25.2
476
27.9
1.25
K 25.3
713
43.4
1.35
K 25.4
1189
74.4
1.69
K 25.5
2008
124
2.53
DN50
2"
K 55.1
2378
149
3.23
K 55.2
3963
248
3.38
K 55.3
5548
341
3.53
INFORMATION!
The operating pressure should be at least double the pressure loss for liquids and five times for
gases. The indicated pressure losses are valid for water and air at maximum flow rate. Other
flow ranges on request. Conversion of other media or operating data is performed using the
calculation method in accordance with VDI /VDE Directive 3513.
MA_H250_M40_R02_en_640702_PRT.book Page 78 Wednesday, November 28, 2012 12:23 PM