Kamstrup flowIQ 3100 - Data Loggers - Daily and Monthly Records; Monthly and Daily Logger Contents; Hour Counter Functionality

flowIQ
®
3100 TECHNICAL DESCRIPTION
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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
FQ
×=
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.)