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Kamstrup A/S • 55121739_B1_GB_02.2020
MULTICAL® 403
3.2 Flow sensor position
A
Recommended position.
B
Recommended position.
C
Unacceptable position due to risk of air
build-up.
D
Acceptable position in closed systems.
E
Ought not to be placed immediately after
a valve, with the exception of block valves
(ball valve type) which must be fully open
when not used for blocking.
F
Ought not to be placed immediately before
or after a pump.
G
Ought not to be placed immediately after a
double bend in two planes.
A
B
C
D
E
F
G
In order to avoid cavitation, the back pressure at the flow sensor (the pressure at the flow sensor
outlet) must be minimum 1.5 bar at q
p
(nominal flow) and minimum 2.5 bar at q
s
(maximum flow).
This applies to temperatures up to approx. 80 °C. The flow sensor must not be exposed to pressure
lower than the ambient pressure (vacuum).
3.3 Installation of MULTICAL® 403 flow sensor
90°
90°
90°
90°
The flow sensor can be mounted horizontally, vertically or at an angle.
