SICK FLOWSIC100 Flare-XT - Page 164

164 FLOWSIC100 Flare-XT · Operating Instructions · 8023761/V 1-0/2020-10 · © SICK Engineering GmbH
Technical data
Fig. 103 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
Ultrasound measurement ASC technology
(Additional uncertainty compared to ultra-
sound measurement.)
Welded Dry calibrated Flow calibrated
Uncertainty [%]
Uncertainty [%]
The exemplary expression of uncertainty according to GUM (Guide to the Expression of Uncertainty in Measurement):
ISO/IEC Guide 98-3:2008-09 shows an F1F-S in 1-path, 16" nominal size and assumes a gas temperature of 20 °C,
ambient pressure and a typical molecular weight greater than 27 g/mol.
VOG [m/s] VOG [m/s]