KROHNE VA40 Handbook page 35

VA40 - VA45
Measuring ranges VA45
Measuring span:
Declaration of flow::
Cone no.
DN15 N -15.01
N -15.02
DN25 N -25.01
N -25.02
DN40 N -40.01
N -40.02
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
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
SCFM or SCFH: Volume flow in Standard state 15°C, 1.013 bar abs. (ISO 13443)
08/2015 - 4000424402 - MA VA40-45 R04 en
10 : 1
Values = 100%
Float
form
[l/h]
C 1500...2300
D 2300...4800
C 5500...9000
D 9000...16000
C 3000...5000
D 5000...7500
C 7500...16500
D 16500...25000
C 17000...26000
D 26000...34000
C 34000...60000
D 60000...75000
3
/h: Volume flow in Normal state 0°C, 1.013 bar abs. (DIN 1343)
Air 20°C [68°F], 1.013 bar abs. [14,7 psia]
1 float form C
2 float form D
3 reading line
Flow air
[SCFH]
55,8...85,6
85,6...179
205...335
335...595
112...186
186...279
279...614
614...930
632...967
967...1265
1265...2232
2232...2790
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TECHNICAL DATA
Max. pressure loss
[mbar] [psi]
3
3
3
3
3
3
3
4
4
4
4
4
7
0,044
0,044
0,044
0,044
0,044
0,044
0,044
0,058
0,058
0,058
0,058
0,058
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