KROHNE H250 M8-M9-M10 EN - Manual (Page 87)

TECHNICAL DATA
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87
H250
www.krohne.com 04/2011 - 4000269302 MA H250-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:
The flow measurement of gases are refered to
SCFM or SCFH: Volume flow in Standard state 15°C, 1.013 bar abs. (ISO 13443)
Measuring span: 10 : 1
Declaration of flow: Values = 100% Water: 20°C [68°F] Air: 20°C [68°F], 1.013 bar abs. [14.7 psia]
Flow direction from top to bottom
EN ASME Cone Water [GPH] Air [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 oper. press. should be at least twice the pressure loss for liquids, and at least 5
times the pressure loss for gases! The specified pressure drops are valid for water and air at
maximum flow rate. Other flow ranges on request. Conversion of other media or operating data
(pressure, temperature, density, viscosity) is performed using the calculation method in
accordance with VDI /VDE Directive 3513
MA_H250_R02_en_269302_PRT.book Page 87 Tuesday, April 12, 2011 10:17 AM