Yokogawa ADMAG AXR - Manual (Page 15)

<3. INSTALLATION>
3-3
IM 01E30D01-01EN
• Mounting orientation
IMPORTANT
If electrodes are perpendicular to the ground, air
bubbles near the top or precipitates at the bottom
may cause measurement errors. Ensure that the
converter of an integral flowmeter are mounted
above the piping to prevent water from entering
them.
Correct
Incorrect
Electrode
Air bubble
Precipitate Electrode
Incorrect
Water can
seep into
the terminal
box.
F0306.ai
Figure 3.1.6 Mounting Orientation
(10) Application
IMPORTANT
• For a fluid containing high concentration
slurries or hard solids (such as earth and
sand, metal powder, and fiber), contact of
the solids on the electrode surface will make
the output fluctuate. Therefore, two-wire
magnetic flowmeters are not suitable for
measuring such fluids. It is recommended to
use the AXF four-wire magnetic flowmeter.
• In the vicinity of an electrolysis bath, strong
stray current may flow in the fluid. It is
recommended to use the AXF four-wire
magnetic flowmeter in such an application.
3.2 Handling Precautions
WARNING
The magnetic flowmeter is a heavy instrument.
Be careful that no damage is caused to
personnel through accidentally dropping it, or
by exerting excessive force on the magnetic
flowmeter. When moving the magnetic
flowmeter, always use a trolley and have at least
two people carry it.
3.2.1 General Precautions
(1) Precaution during Transportation
The magnetic flowmeter is packed tightly. When
it is unpacked, pay attention to prevent damaging
the flowmeter. To prevent accidents while it is being
transported to the installing location, transport it to
the site in its original packing.
CAUTION
In order to lift a magnetic flowmeter that is fitted
with eyebolts, proceed as in Figure 3.2.1. Never
lift it using a bar passed through the flowtube as
this damages the liner severely.
(2) Avoid Shocks from Impact
CAUTION
Care should be taken not to drop the flowmeter
or expose it to excessive shock. In particular, be
careful not to subject the flange surface to shock.
This may lead to liner damage which will result in
inaccurate readings.
(3) Flange Protection Covers
IMPORTANT
Keep the protective covering (i.e. the corrugated
cardboard or other cushioning material) in place
over the flange except when mounting the
flowmeter to the pipe.