78
FLOWSIC100 Flare · Addendum to Operating Instructions · 8025365/V1-0/2020-05 · © SICK Engineering GmbH
Technical data
Fig. 44
Uncertainty of flow rate as function of the velocity of gas (VOG)
2
4
6
8
10
12
0.01
0.1
1
10
100
0
Uncertainty [%]
vog [m/s]
2
4
6
8
10
12
0
90
100
110
120
130
Uncertainty [%]
vog [m/s]
Hot Tapped
Dry Calibration
Flow Calibration
Ultrasonic measurement
ASC Technology
(Additional uncertainty onto ultrasonic
measurement.)
Welded
Dry calibrated
Flow calibrated
Un
ce
rta
in
ty
[%
]
Un
ce
rta
in
ty
[%
]
This exemplary uncertainty statement according to GUM (Guide to the Expression of Uncertainty in Measurement): ISO/
IEC Guide 98-3:2008-09 shows a F1F-S in 1-path, 16" nominal pipe size configuration and assumes a gas temperature
of 20 °C, ambient pressure, a typical molecular weight of greater than 27 g/mol.
VOG [m/s]
VOG [m/s]
