Parameterization
90
FV4000-VT4/VR4 / FS4000-ST4/SR4
D184B097U02
8.7
Description of parameters
8.7.1 Nominal
size
This parameter is used to adapt the electronics, which are the same for all nominal sizes, to the
corresponding flowmeter sensor. The nominal size is factory-set as appropriate for the
corresponding flowmeter sensor (see name plate).
8.7.2 Mean k factor
The mean k factor shown on the display has to match the value on the flowmeter sensor. Every
meter is calibrated with five measuring points on the test bench. The calibration factors (k
factors) are entered in the flowmeter sensor and recorded on the test log. A mean calibration
factor is calculated and engraved on the flowmeter sensor. The following tables show the typical
k factors for corresponding nominal sizes, along with the frequencies generated in the flowmeter
when measuring fluids and gases.
Important
The values indicated are typical k factors and frequencies for the associated device models.
Precise data can be found in the test logs included in the respective scopes of supply.
FV4000-VT4/VR4 Vortex flowmeter
Nominal size
Typical k
factor
Fluid f
max
at Qvmax
(Hz)
Gas f
max
at Qvmax
(Hz)
DN
Inch
Max. (1/m
3
)
DIN
ANSI
DIN
ANSI
15 1/2 225000 370 450 1520 1980
25 1 48000 240 400 2040
1850
40 1
1/2 14500 190 270 1550 1370
50 2 7500 140 176 1030
1180
80 3 2100 102 128 700 780
100 4
960
72 75 500 635
150 6
290
50 50 360 405
200 8
132
45 40 285 240
250 10
66
29 36 260 225
300 12
39
26 23 217 195
Summary of Contents for FS4000-SR4
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