4310 Wireless Position Monitor
Instruction Manual
October 2009
6
VALID TRAVEL
RANGE
25 mm (1 INCH)
SHOWN
MAGNET
ASSEMBLY
(ATTACHED TO
VALVE STEM)
W9635
Figure 3. Travel Range
Valve / Actuator Mounting
If ordered as a part of a control valve assembly, the
factory will mount the wireless position monitor on
the actuator and calibrate the instrument. If you
purchased the wireless position monitor separately,
you will need a mounting kit to mount the wireless
position monitor on the actuator. The following
procedures are general guidelines you should
consider when mounting the wireless position
monitor. See the instructions that come with the
mounting kit for detailed information on mounting the
wireless position monitor to a specific actuator
model.
The feedback system for the 4310 wireless position
monitor utilizes a magnetic field for true
linkage
−
less, non
−
contacting position measurement.
In order to prevent inadvertent stem movement while
the instrument is in operation magnetic tools (such
as a magnetic
−
tipped screwdriver) should not be
used.
CAUTION
The magnet material has been
specifically chosen to provide a
long
−
term stable magnetic field.
However, as with any magnet, care
must be taken when handling the
magnet assembly. Another high
powered magnet placed in close
proximity (less than 25 mm) can cause
2
−
OR 4
−
INCH ARRAY
NOTE: VALID TRAVEL RANGE
INDICATED BY WHITE ARROWS
ROTARY
1
−
INCH ARRAY
Figure 4. Magnet Assemblies
permanent damage. Potential sources
of damaging equipment include, but
are not limited to: transformers, DC
motors, stacking magnet arrays, and
magnetic tipped screwdrivers.
Note
As a general rule, do not use less than
50% of the magnet array for full travel
measurement. Performance will
decrease gradually as the array is
increasingly subranged.
The linear magnet arrays have a valid
travel range indicated by arrows
molded into the piece. This means that
the Hall sensor (on the back of the
4310 housing) has to remain within
this range throughout the entire valve
travel. See figure 3.
The linear magnet arrays are
symmetrical. Either end may be up.
There are a variety of mounting brackets and kits
that are used to mount the 4310 to different
actuators. However, despite subtle differences in
fasteners, brackets, and connecting linkages, the
procedures for mounting can be categorized as
follows:
D
Linear or sliding
−
stem actuators with up to
4 inch travel
D
Rotary
−
shaft actuators with travel up to 90
degrees.
See figure 4 for the different travel feedback magnet
assemblies.
