Temposonics
®
R-Series Powerlink V2
Operation Manual
I 22 I
4.6 Magnet installation
Sensors with stroke lengths ≥ 1 meter (3.3 ft.)
Support horizontally installed sensors with a stroke length from 1 meter
(3.3 ft.) mechanically at the rod end. Without the use of a support, rod
and position magnet may be damaged. A false measurement result is
also possible. Longer rods require evenly distributed mechanical support
over the entire length (e.g. part no. 561 481). Use an U-magnet (Fig. 34)
for measurement.
NOTICE
Mount ring magnets and U-magnets concentrically.
Mount block magnets centrically over the sensor rod
or the sensor profile. Do not exceed the maximum acceptable gap.
Controlling design dimensions are in millimeters and measurements in ( ) are in inches
Fig. 30: Typical use of magnets
M4
2
1
8 ±2
(0.31 ±0.08)
Sensor element
Air gap:
3 ±2
(0.12 ±0.08)
Concentric mounting
of block magnet
1
Block magnet
2
Non-magnetic mounting plate
Magnet
Typical sensors
Benefits
Ring magnets
Rod models
(RH, RD4, RF)
• Rotationally symmetrical
magnetic field
U-magnets
Profile &
rod models
(RP, RH,
RD4, RF)
• Height tolerances can be
compensated
Block magnets
Profile &
rod models
(RP, RH, RF)
• The magnet can be lifted off
• Height tolerances can be
compensated
Magnet sliders
Profile models
(RP)
• The magnet is guided
through the profile
• The distance between the
magnet and the waveguide
is strictly defined
• Easy coupling via the
ball joint
Mounting ring magnets, U-magnets & block magnets
Install the magnet using non-magnetic material for mounting
device, screws, spacers etc.. The magnet must not grind on
the sensor rod. Alignment errors are compensated via the air gap.
• Permissible surface pressure: Max. 40 N/mm
2
(only for ring
magnets and U-magnets)
• Fastening torque for M4 screws: 1 Nm; use washers, if necessary
• Minimum distance between position magnet and any magnetic
material has to be 15 mm (0.6 in.) (Fig. 33).
• If no other option exists and magnetic material is used,
observe the specified dimensions (Fig. 33).
Magnet mounting with magnetic material
When using magnetic material the dimensions of Fig. 33 must
be observed.
A.
If the position magnet aligns with the drilled piston rod
B.
If the position magnet is set further into the drilled piston rod,
install another non-magnetic spacer (e.g. part no. 400 633) above
the magnet.
Fig. 31: Mounting of U-magnet (part no. 251 416-2 or part no. 201 553)
Fig. 32: Mounting of block magnet (part no. 403
448)
Fig. 33: Installation with magnetic material
U-magnet
Sensor rod
Non-magnetic fixing clip
Magnet
Magnet
1
2
3
A
B
Magnetic
material
3
1
Null zone, depends on sensor model (see Fig. 35 / 36 / 37)
2
Distance between position magnet and any magnetic material
(≥ 15 mm (≥ 0.6 in.))
3
Non-magnetic spacer (≥ 5 mm (≥ 0.2 in.)) –
Recommendation: 8 mm (0.31 in.)
M4
1
2
Air gap
Concentric mounting
of U-magnet
Part no. 201 553:
3 ±1 (0.12 ±0.04)
Part no. 251 416-2:
1.75 ±1 (0.07 ±0.04)
1
U-magnet
2
Non-magnetic mounting plate
Fig. 34: Example of sensor support (part no. 561 481)
