Function And Characteristics; Characteristics; Function; Available Stroke Lengths And Magnets - Balluff BTL5-S1 Serie Manual De Instrucciones

BTL5-S1_ _-M_ _ _ _-B/Z-DEX_-K_ _/KA_ _
Micropulse Transducer - Rod Style
2

Function and characteristics

2.1

Characteristics

Micropulse transducers are charac-
terized by:
High data security: Output data
–
are checked for validity and
plausibility in the µC
Very high resolution, repeatabil-
–
ity and linearity
– Measurement range monitoring
with "Out of Range" Bit 2
– Immunity to shock, vibration,
and contamination
An absolute output signal
–
Cable length between trans-
–
ducer and controller up to 400 m
Pressure rated to 350 bar when
–
installed in hydraulic cylinder
(Zone 1)
Protected to IP 67 per IEC 60529
–
Wear- and maintenance-free
–
measuring principle
2.2

Function

The transducer contains a wave-
guide enclosed by an outer stain-
less steel rod. A magnet attached
3

Installation

Ø 5 for hook-
spanner Ø 65,
tightening torque
max. 50 Nm
BTL5...DEXB-KA_ _
axial
connection
BTL5...DEXB-K_ _
radial connection
Fig. 3-1: BTL5...B/Z..., transducer dimensions
english
4
to the moving member of the ma-
chine or to the cylinder piston is
moved over the rod and its posi-
tion constantly updated.The mag-
net ring must remain within the
measuring range.
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
21
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
arriving at the beginning of the
waveguide creates an electrical
signal in the coil surrounding the
waveguide. The propagation time
of the wave is used to determine
the position, which in turn is output
over the RS 485/422 interface in
the form of synchronous serial
data. This is done with high preci-
sion and repeatability at the se-
B: 30 -1
nom. length =
Z: 2" -0.04"
measuring range
➀
O-ring Viton
GFLT 90
magnet ring
mounting
surface
B: 30 -1
nom. length =
Z: 2" -0.04" measuring range
O-ring Viton
➀
GFLT 90
thread size:
B: M18×1.5
Z: 3/4"-16UNF
lected resolution within the range
given as the nominal stroke length.
The electrical connection between
the transducer, the controller and
the power supply is via a fixed
cable, which depending on the
version is either axially or radially
connected.
Dimensions for installing the
Micropulse transducer: ➥ ➥ ➥ ➥ ➥ Fig. 3-1
Dimensions for installing the mag-
net: ➥ ➥ ➥ ➥ ➥ Fig. 3-5
Dimensions for installing the float:
➥ ➥ ➥ ➥ ➥ Figs. 3-7 to 3-10
2.3
To ensure flexible application,
nominal transducer stroke lengths
of from 25 to 4000 mm and various
types of magnets are available.
Magnets/floats therefore need to
be ordered separately.
➀
float
➁ ➀
BTL5...DEXA-KA_ _
damping zone
➀
➀
BTL5...DEXA-K_ _
Ignition Class "d"
Flameproof enclosure
Available stroke lengths
and magnets
➀
unusuable area
➁
not included.
thread
M4 × 4/
6 deep
float stop
thread
M4 × 4/
6 deep
float stop