flowIQ
®
3100 TECHNICAL DESCRIPTION
39
Kamstrup A/S • Technical Description • 5512
-
1242_B1_GB • 05.2015
10.4
Calculation of flow volume
The measurement of the actual
velocity of sound in water
is also used to determine the temperature of the
water, as there is a correlation between these two values, at temperatures below approx. 30 °C
The flow is calculated, as mentioned above, by
multiplying the flow rate and the cross
-sectional area:
A
F
Q
×
=
This measurement and calculation is performed every four seconds in the meter; the calculation itself only
takes a few milliseconds. The measurement is therefore a 'snapshot'
of the current flow.
This will, like any type of digital sampling, integrate the measurements over time, leading to the calculation
of the final volume.
Time [seconds)
Flow [l/sec.)
