Installation Position And Flow Direction - Honeywell QA-Serie Betriebsanleitung

Honeywell

3.4 Installation position and flow direction

 Installation in the vertical or horizontal
position, not upside down.
 Install the QA/QAe in the flow direction
from top to bottom for gases that tend
to condensate. Use a condensate drain
in the pipeline.
 If a threaded version quantometer is
used for flow control purposes (E200 as
a pulse output),
QA/QAe...G I in a horizontal position with the index at the top (index not
tilted downwards).
 When measuring the surrounding air and/or if the flowing gas is
contaminated by foreign bodies and dust, a filter should be installed.
 When designing new systems, it is recommended to install a strainer
(mesh size 0.5 mm) immediately upstream of the meter to protect it from
foreign bodies such as metal chips. The strainer should be removed after
4 weeks at the latest.
 If the flowing gas is contaminated by condensation or dirt, the
quantometer should not be installed at the lowest point of the pipe.
 Install the quantometer in a straight
pipeline.
Inlet section = 3 x DN.
Outlet section = 2 x DN.
 Use a pipeline with the same nominal
dimensions.
 The pipe downstream of the quantometer must not have any restriction
point which could cause the flow to back up.
 All approved flat seal types may be used.
 Permanently high temperatures can reduce the service life.
 Operate the quantometer in a shock-free, pulse-free and vibration-free
environment. Otherwise, the service life and measurement accuracy can
be adversely affected. Ensure the unit is installed free of mechanical
stress.
 Ensure that the meter is aligned without any tension.
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only install the
73025026a © Elster GmbH | All rights reserved. Subject to modification
Fig. 5 | Installation position
Fig. 6 | Inlet and outlet sections