Magnet Installation - MTS Sensors Temposonics Powerlink V2 R Series Operation Manual

Temposonics R-Series Powerlink V2
®
Operation Manual

4.6 Magnet installation

Magnet Typical sensors
Ring magnets Rod models
(RH, RD4, RF)
U-magnets Profile &
rod models
(RP, RH,
RD4, RF)
Block magnets Profile &
rod models
(RP, RH, RF)
Magnet sliders Profile models
(RP)
Fig. 30: Typical use of magnets
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
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).
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.
Concentric mounting
of U-magnet
Air gap
Part no. 251 416-2:
1.75 ±1 (0.07 ±0.04)
Part no. 201 553:
3 ±1 (0.12 ±0.04)
U-magnet
1
Non-magnetic mounting plate
2
Fig. 31: Mounting of U-magnet (part no. 251 416-2 or part no. 201 553)
Controlling design dimensions are in millimeters and measurements in ( ) are in inches
Benefits
• Rotationally symmetrical
magnetic field
• Height tolerances can be
compensated
• The magnet can be lifted off
• Height tolerances can be
compensated
• The magnet is guided
through the profile
• The distance between the
magnet and the waveguide
is strictly defined
• Easy coupling via the
ball joint
(only for ring
2
2
1
M4
Concentric mounting
of block magnet
8 ±2
(0.31 ±0.08)
Block magnet
1
Non-magnetic mounting plate
2
Fig. 32: Mounting of block magnet (part no. 403 448)
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.
A
2
Magnet
3
Null zone, depends on sensor model (see Fig. 35 / 36 / 37)
1
Distance between position magnet and any magnetic material
2
(≥ 15 mm (≥ 0.6 in.))
Non-magnetic spacer (≥ 5 mm (≥ 0.2 in.)) –
3
Recommendation: 8 mm (0.31 in.)
Fig. 33: Installation with magnetic material
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.
Fig. 34: Example of sensor support (part no. 561 481)
I 22 I
M4
Air gap: 3 ±2
(0.12 ±0.08)
Sensor element
B
Magnetic
1
material
Magnet
3
U-magnet
Sensor rod
Non-magnetic fixing clip
2
1