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Reference Manual
00809-0100-4809, Rev DA
Section 2: Installation
September 2015
Installation
2.5.6 Flowmeter orientation
Liquid
Due to the possibility of air getting trapped in the Annubar sensor, it should be located
according to Figure 2-7 for liquid applications. It should be mounted between 15° to 45° from
vertical down to ensure that air is vented from the Annubar sensor, and that sediment or solid
particles are not collected within the Annubar sensor.
For liquid applications, mount the side drain/vent valve upward to allow the gases to vent. In
vertical lines, the Annubar sensor can be installed in any position around the circumference of
the pipe, provided the vents are positioned properly for bleeding or venting. Vertical pipe
installations require more frequent bleeding or venting, depending on the location.
For a remote mounted transmitter, mount the transmitter below the process piping, adjust 10°
to 15° above direct vertical down. Route the impulse piping down to the transmitter and fill the
system with cool water through the two cross fittings.
Figure 2-7. Liquid Applications
Direct mount
Horizontal liquid Vertical liquid
Remote mount
Horizontal liquid Vertical liquid
45° 45°
30°
Recommended
zone 30°
Recommended
zone 30°
Flow
360°
Note: Downward flow is not recommended.
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