Reference Conditions For Flow Measurement - ABB FV4000 Operating Instruction

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12.4 Reference conditions for flow measurement

Set flow range
Ambient temperature
Humidity
Air pressure
Supply power
Signal cable length
Current output load
Fluid for calibration
Calibration loop internal
diameter
Unobstructed straight
upstream section
Downstream section
Pressure measurement
Temperature
measurement
A
12.5 FV4000-VT4 / VR4 flowrates
12.5.1 Fluid flowrates
Re min
DN
15 1/2" 10000
25 1" 20000
40 1 1/2" 20000
50 2" 20000
80 3" 43000
100 4" 33000
150 6" 67000
200 8" 120000
250 10" 96000
300 12" 155000
The flowrates apply for fluids at 20 °C (68 °F), 1,013 mbar (14.69 psi), ρ = 998 kg/m 3 (62.30 lb/ft 3 ).
12.5.2 Gas/Steam flowrates
Re min
DN
15 1/2" 10000
25 1" 20000
40 1 1/2" 20000
50 2" 20000
80 3" 43000
100 4" 33000
150 6" 67000
200 8" 120000
250 10" 96000
300 12" 155000
The flowrates apply for gas at ρ = 1.2 kg/m 3 (0.075 lb/ft 3 ).
D184B097U02
FV4000-VT4/VR4
10 m (32.8 ft) (FV4000-VR or FS4000-SR only)
Water: approx. 20 °C (68 °F), 2 bar (29 psi)
15 x DN
5 x DN
2 ... 3 x DN downstream after pressure measurement
DIN pipe
Q v maxDN Frequency
(Hz)
(m 3 /h)
at Q v max
6 370
18 240
48 270
70 180
170 140
270 100
630 50
1100 45
1700 29
2400 26
DIN pipe
Q v maxDN Frequency
(Hz)
(m 3 /h)
at Q v max
24 1520
150 2040
390 2120
500 1200
1200 1000
1900 700
4500 480
8000 285
14000 260
20000 217
FV4000 / FS4000
0.5 ... 1 x QvmaxDN
20 °C (68 °F) ± 2K
65 % rel. humidity ± 5 %
86 ... 106 kPa
24 V DC
250 Ω (4 ... 20 mA only)
= internal diameter of meter
3 ... 5 x DN downstream of meter
Re min Q v maxDN
(m 3 /h)
11000 5,5
23000 18
23000 48
22000 66
48000 160
44000 216
80000 530
128000 935
115000 1445
157000 2040
Re min Q v maxDN
(m 3 /h)
11000 22
23000 82
23000 340
22000 450
48000 950
44000 1800
80000 4050
128000 6800
115000 12000
157000 17000
Specifications
FS4000-ST4/SR4
3 x DN
1 x DN
ANSI pipe
Q v maxDN Frequency
(US gal/min)
at Q v max
24
79
211
291
704
951
2334
4117
6362
8982
ANSI pipe
Q v maxDN Frequency
(ft 3 /min)
at Q v max
13
48
200
265
559
1059
2384
4002
7063
10006
(Hz)
450
400
270
176
128
75
50
40
36
23
(Hz)
1980
1850
1370
1180
780
635
405
240
225
195
109