MULTICAL® 403
Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
4.2 Inlet prerequisites
Kamstrup’s flow sensors require neither straight inlet nor straight outlet to meet the Measuring Instruments
Directive (MID) 2014/32/EU, OIML R75:2002 and EN 1434:2015. A straight inlet section will only be necessary in case
of heavy flow disturbances before the meter. It is recommended to follow the guidelines in CEN CR 13582, Heat
meter installation. Instructions in selection, installation and use of heat meters.
Optimal position can be obtained, if you take the below installation recommendations into consideration.
A Recommended flow sensor position.
Recommended flow sensor position.
Unacceptable position due to risk of air
build-up.
Acceptable position in closed systems.
Unacceptable position in open systems due
to risk of air build-up in the system.
E A flow sensor ought not to be placed
immediately after a valve, with the exception
of shut-off valves (full bore ball valve type),
which must be fully open when not used for
shutting off.
F A flow sensor ought not to be placed
immediately before (on the inlet side) or
immediately after (on the pressure side) a
pump.
G A flow sensor ought not to be placed
immediately after a double bend in two
planes.
Figure 2. General installation recommendations for flow sensors.
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