IM-P736-02 EMM Issue 3
23
VLM30 In-Line Vortex Flowmeter
Fig. 8 Arrangement of the temperature and pressure measuring points
If pressure and temperature are to be compensated externally (e.g. using the flow computer unit), the
measuring points should be installed as illustrated.
3.5 Installation of setting equipment
3.4 Installation for external pressure and temperature
measurement
Pressure
measuring point
Temperature
measuring point
Fig. 9 Installation of setting devices
Control and setting devices should be arranged in the forward flow direction downstream from the flowmeter
at a distance of at least 5 × DN.
If the measuring medium is conveyed through piston pumps/plunger pumps or compressors (pressures for
fluids > 10 bar [> 145 psi]), it may be subject to hydraulic vibration in the piping when the valve is closed.
If this is the case, it is essential that the valve be installed in the forward flow direction upstream from the
flowmeter. Suitable dampers (for example, air vessels in the case of pumping using a compressor) might
need to be used.
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