KROHNE VA 40-VA 45 EN - Manual (Page 35)

TECHNICAL DATA
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VA40 - VA45
www.krohne.com 09/2013 - 4000424402 MA VA40 45 R04 en
Measuring ranges VA45
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
Nl/h or Nm
3 /h: Volume flow in Normal state 0°C, 1.013 bar abs. (DIN 1343)
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% Air 20°C [68°F], 1.013 bar abs. [14,7 psia]
1 float form C
2 float form D
3 reading line
Cone no. Float
form
Flow air Max. pressure loss
[l/h] [SCFH] [mbar] [psi]
DN15 N -15.01 C 1500...2300 55,8...85,6 3 0,044
D 2300…4800 85,6...179 3 0,044
N -15.02 C 5500…9000 205...335 3 0,044
D 9000…16000 335...595 3 0,044
DN25 N -25.01 C 3000…5000 112...186 3 0,044
D 5000…7500 186...279 3 0,044
N -25.02 C 7500…16500 279...614 3 0,044
D 16500…25000 614...930 4 0,058
DN40 N -40.01 C 17000…26000 632...967 4 0,058
D 26000…34000 967...1265 4 0,058
N -40.02 C 34000…60000 1265...2232 4 0,058
D 60000…75000 2232...2790 4 0,058
INFORMATION!
The operating pressure should be 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_VA40_45_R04_en_424402_PRT.book Page 35 Monday, September 16, 2013 8:50 AM