Balluff BTL7-S5 B-M Series User Manual

www.balluff.com 7english
Fig. 3-1:
Ø 6.7
0.5 Ø 25
71
11
25
60
Ø D1
G
45
46
13.5
12.8
71 (74.5) 25
74.5
12.8
BTL7…cable
BTL7…S115
BTL7…S32/S147
1)
1)
2)
BTL7…A/B/Y/Z(8)… transducer, construction and function
3.1 Construction
Electrical connection: The electrical connection is made
via a cable or a connector (see Type code breakdown on
page24 or page25).
Housing: Aluminum housing containing the processing
electronics.
Mounting thread: We recommend assembling the
transducer on the fastening screw thread:
– BTL7-…-A/B: M18×1.5
– BTL7-…-Y/Z: 3/4”-16UNF
The transducers with Ø10.2mm have an additional thread
at the end of the rod to support larger nominal lengths.
Magnet: Defines the position to be measured on the
waveguide. Magnets are available in various models and
must be ordered separately (see Accessories on page 21).
Nominal length: Defines the available measuring range.
Rods with various nominal lengths from 25 mm to
7620mm are available depending on the version:
– Ø10.2mm: Nominal length from 25mm to 7620mm
– Ø8mm: Nominal length from 25mm to 1016mm
Damping zone: Area at the end of the rod that cannot be
used for measurements, but which may be passed over.
3.2 Function
The Micropulse Transducer contains the waveguide which
is protected by an outer stainless steel tube (rod). A
magnet is moved along the waveguide. This magnet is
connected to the system part whose position is to be
determined. The magnet defines the position to be
measured on the waveguide.
An internally generated INIT pulse interacts with the
magnetic field of the magnet to generate a torsional wave
in the waveguide which propagates at ultrasonic speed.
The component of the torsional wave which arrives at the
end of the waveguide is absorbed in the damping zone to
prevent reflection. The component of the torsional wave
which arrives at the beginning of the waveguide is
converted by a coil into an electrical signal. The travel time
of the wave is used to calculate the position that is output
in antivalent form as synchronous serial data (SSI) on the
RS-422 interface. This is done with a high level of precision
and reproducibility within the measuring range indicated as
the nominal length.
In addition to the position output value, the following
functions can be selected (only BTL7-S510(B)-…):
– Differential position
– Speed (with or without leading sign)
– Speed difference
3
Construction and function
Nominal length =
Measuring range
Mounting surface
B: 30-1 mm
Z: 2"-0.04"
Damping zone
1)
Magnet
2)
BTL7…B/Z…
Thread size:
B: M18x1.5
Z: 3/4"-16UNF
Mounting surface
A: 30-1 mm
Y: 2"-0.04"
BTL7…A/Y…
Thread size:
A: M18x1.5
Y: 3/4"-16UNF
1) Unusable area
2) Not included in scope
of delivery
Version D1 G
…-A/B/Y/Z-… 10.2mm Thread
M4x4/6deep
…-A8/B8/Y8/Z8-… 8mm No thread
BTL7…S140
View of
BTL7…S32
BTL7-S5 __ (B)-M ____ -A/B/Y/Z(8)-S32/S115/S140/S147/KA __ /FA __
Micropulse Transducer - Rod Style

Balluff BTL7-S5 B-M Series Specifications

General

Brand	Balluff
Model	BTL7-S5 B-M Series
Category	Transducer
Language	English