3
BTL5-T1_ _-M_ _ _ _-B/Z-S103
Micropulse Linear Transducer - Rod Style
english
2.1
Characteristics
–
High data reliability: output data
are checked in the µC for validity
and plausibility.
–
Up to 4 positions can be pro-
cessed
–
Definable working strokes
–
Absolute output signal
–
High resolution, repeatability and
linearity
–
Insensitive to shock, vibration,
contamination and noise
–
Max. fieldbus length 1200 m
–
Configuration using Step7, COM-
PROFIBUS, WinDP, or other
configuration softwarer
–
Protected to IP 67 per IEC 60529
–
Pressure rated to 600 bar.
–
DIP switches for address setting
–
DIP switches for bus termination
2.2
Function
The transducer contains a wave-
guide enclosed by an outer stain-
less steel rod. A magnet attached to
the moving member of the machine
or to the cylinder piston is moved
over the rod and its position con-
stantly updated.
The magnet defines the measured
position on the waveguide. An inter-
nally generated INIT pulse interacts
with the magnetic field of the mag-
net to generate a magnetostrictive
torsional wave in the waveguide
which propagates at ultrasonic
speed.
The torsional wave arriving at the
end of the waveguide is absorbed in
the damping zone. The wave arriv-
ing at the beginning of the wave-
guide creates an electrical signal in
the coil surrounding the waveguide.
The propagation time of the wave is
used to determine the position to a
resolution of 5 µm. This takes place
with high precision and repeatability
at the selected resolution within the
measuring range indicated as the
nominal stroke length.
At the rod end is a damping zone,
within which no reliable signal is
available, but which may be entered
by the magnet.
The electrical connection between
the transducer, the processor card
or controller, and the power supply
is accomplished using several plug-
in cables.
2
Function and characteristics
Dimensions for installing the
Micropulse transducer:
➥
➥
➥
➥
➥
Fig. 3-2
Dimensions for installing the mag-
net:
➥
➥
➥
➥
➥
Fig. 3-4
2.3
Available stroke lengths
and magnets
To provide for optimum fit in any
application, a wide range of stan-
dard stroke lengths and magnets in
various form factors are available.
Magnets and control arms must
therefore be ordered separately.
The following nominal stroke
lengths are available:
Stroke lengths
[mm]
Increments
[mm]
50 ... 500
25
500 ... 1000
50
1000 ... 2000
100
2000 ... 4000
250
Other stroke lengths on request.
3
Installation
3.1
Mounting
When possible, use non-magnetiz-
able material for attaching the trans-
ducer and magnet ring.
➥
➥
➥
➥
➥
Fig. 3-1.
When attaching the transducer to
magnetizable materials, appro-
priate measures must be taken to
protect against magnetic disturb-
ances
➥
➥
➥
➥
➥
Fig. 3-1. Note the
recommended distance of the
transducer and cylinder from
strong, external magnetic fields.
Fig. 3-1: Mounting
➀
-
➂
for magnetizable materials
➃
for non-magnetizable materials
a = Spacer made of non-mag-
netizable materials
b = Magnet
15
a
b
8
➁
➀
a
b
a
15
8
b
➃
➂
a
b
15
min. Ø 13
min. Ø 13
min. Ø 13
8
non-magnetizable material
