KROHNE OPTISWIRL 4070 Quickstart EN - Manual (Page 10)

2
INSTALLATION
10
OPTISWIRL 4070
www.krohne.com 06/2010 - 4000122102 - QS OPTISWIRL R04 en
2.3.3 Pipelines with control valve
2.3.4 Preferred mounting position
INFORMATION!
To ensure smooth and correct measurement, the manufacturer recommends not installing the
measuring device downstream from a control valve. This would run the risk of vortex formation,
which would distort the measuring result.
Figure 2-5: Pipeline with control valve
1 Recommended: installing the device upstream upstream upstream upstream from the control valve at a distance of ≥ 5 DN
2 Not recommended: Installing the flowmeter directly downstream directly downstream directly downstream directly downstream of control valves, due to vortex formation.
Preferred mounting position
1 Above a horizontal pipe
2 underneath a horizontal pipe (not permitted with lines at risk for condensate)
3 On a vertical pipe
INFORMATION!
Depending on the installation position, you may have to rotate the display and/or the connection
housing. For further information refer to Turning the display on page 12.
QS_OPTISWIRL4070_R04_en_122102_PRT.book Page 10 Monday, June 7, 2010 8:51 AM