Siemens SITRANS F M MAG 1100 F Instructions Manual page 6

SITRANS F M electromagnetic flowmeter type MAG 1100 F, DN 10 - DN 100 3/8" - 4"
Inlet and outlet conditions
Potential equalization
Installation
6
The MAG 1100 F sensor has an integrated
clamp connection and is designed for installa-
tion between two adapters, which are supplied
separately. The adapters are available for a
variety of standards according to: ISO, DIN,
SMS, BS and DS, for direct welding into dairy
pipes or with clamp- or threaded fittings.
At assembly, a gasket is located in the recess in
the face of the adaptor, and the adaptor is then
To achieve accurate flow measurement it is
essential to have straight lengths of inlet and
outlet pipes and a certain distance between
pumps and valves.
It is also important to centre the flowmeter in
relation to pipe flanges and gaskets.
The sensor must be installed between two
adapters. Potential equalization with the
liquid occurs automatically via these adapt-
ers and through the adjacent pipe.
fastened to the MAG 1100 F sensor with a
clamp ring. The clamp ring should be
tightened sufficiently to ensure sealing of
the gasket but care should be taken to avoid
over compression of the gasket causing
extrusion into the bore of more than 0.8 mm.
New type composite gasket, which will
reduce the risk of extrusion, are now being
supplied to known users, and it is
recommended that old gaskets are replaced
with the new type as soon as possible. Any
new orders for replacement gaskets will be
of the new type.
Siemens recommend that all gaskets are
replaced after the equivalent of three months
continuous use.
In order to meet the 3-A Sanitary Standard
the sensor must be installed as a remote
unit.
To obtain optimum accuracy and hygienic
conditions it is important that the sensor and
the pipes are correctly aligned around their
centerline, fittings must be perpendicular to
the pipeline and upstream pipelines must be
straight without curves.
Warning
Turning the sensor around the adapter cen-
tre line after the clamp rings have been fas-
tened will damage the liner. The sensor may
therefore only be turned when the clamp
rings have either been removed or com-
pletely loosened.