FSM4000 ELECTROMAGNETIC FLOWMETER | OI/FSM4000-EN REV. E 19
Installation in 3A compliant installations
Angel bracket
Leakage hole
Figure 21: 3A compliant installation
Please observe the following points:
A Do not install the device vertically with the terminal box
or transmitter housing pointing downward.
B The ‘angel bracket’ option is not 3A compliant.
C If concentric reducers are installed on the device, it must
be mounted in a vertical position. See also Installation in
piping with larger nominal diameter on page 18.
D Please make sure that the leakage hole of the process
connection is located at the lowest point of the installed
device.
• A vertical mounting position is preferred. For a horizontal
mounting position, make sure that the sensor is installed
to be self-draining.
• Make sure that the cover of terminal box and / or
transmitter housing is properly sealed. There can be no
gaps between the housing and the cover.
Only devices with the following process connections fulfill 3A
compliance.
• Welded spuds
• Tri-clamp
Installing the sensor
Damage to the device
Damage to the device due to improper assembly.
• The use of graphite with the flange or process connection
gaskets is prohibited. This is because, in some instances,
an electrically conductive coating may form on the inside
of the meter tube.
• Vacuum shocks in the piping should be avoided to prevent
damage to the liners (PTFE liner). Vacuum shocks can
The flowmeter sensor can be installed at any location in the
piping while taking the installation conditions into account.
1. Remove protective plates, if present, to the right and left of
the meter tube. To prevent possible leakage, make sure that
the liner on the flange is not cut or damaged.
2. Position the flowmeter sensor plane parallel and centered
between the piping.
3. Install gaskets between the surfaces, see Gaskets on
page 15.
Note
For achieve the best results, ensure the gaskets fit concentrically
with the meter tube
To guarantee that the flow profile is not distorted, the gaskets
must not protrude into the piping.
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