SIKA VVX Serie Notice D'utilisation page 18

Installation
2 Installation
IMPORTANT
Mechanical loads, exceeding the measuring range or pressure surges can dam-
age the VVX sensor.
 The sensor in the measuring tube must not be exposed to mechanical loads.
 Avoid water hammers during commissioning or normal operation.
IMPORTANT
Bubble formation and cavitation in the medium can cause sensor malfunction and
must be avoided. Cavitation is strongly dependent on the medium, flow rate and
medium temperature. SIKA recommends the following minimum system pres-
sures.
VVX15
1.0 bar
IMPORTANT
External vortices are generated by disturbances (offsets, protruding flat gaskets,
changes in diameter, etc.) of the flow in the inlet and outlet sections. They lead to
false pulses so that the error limits of the VVX can no longer be guaranteed.
 Ensure that the inside diameter of the pipe matches the inside diameter of the
VVX.
 Avoid obstructions in the inlet and outlet sections.
 Provide suitable calming sections at the inlet and outlet.
IMPORTANT
Mechanical vibrations (e.g. pump, compressor ...) transmitted to the VVX can lead
to incorrect measurements.
 Select the installation location so that no vibrations are transmitted to the
VVX.
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Recommended minimum system pressure
VVX20
1.4 bar
VVX25 VVX32
1.6 bar 2.0 bar
VVX40
2.2 bar
© SIKA • Ba_VVX • 10/2023
VVX