MULTICAL® 302
Kamstrup A/S · Technical Description · 5512-1334_F1_GB_12.2016
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9.4
Signal paths
9.5
Flow limits
In the meter’s working range from min. flow cutoff and far beyond qs there is a linear connection between the flow rate
and the measured water flow.
In practice the highest possible water flow through the meter will be limited by the pressure in the system or possible
cavitation due to too low back pressure.
If the flow is lower than min. cutoff or negative, MULTICAL
®
302
does not measure any flow.
According to EN 1434 the upper flow limit qs is the highest flow at which the flow sensor may operate for short periods
of time (
<
1h/day,
<
200h/year) without exceeding max. permissible errors. MULTICAL
®
302 has no functional
limitations during the period, when the meter operates above qp. Please note, however, that high flow velocities may
cause cavitation, especially at low static pressure. See paragraph 6.5 for further details on operating pressure.
q
p
0.6 - 1.5 - 2.5 m³/h
Parallel measurement
The sound path is parallel to
the measuring pipe and the
sound signal is sent from the
transducers via reflectors.