HBM WI Series Manual de usuario
Mounting Instructions | Montageanleitung |
Notice de montage
English Deutsch Français
WI
Hottinger Baldwin Messtechnik GmbH
Im Tiefen See 45
D-64293 Darmstadt
Tel. +49 6151 803-0
Fax +49 6151 803-9100
www.hbm.com
Mat.: 7-2001.1243
DVS: A01028_05_Y00_01 HBM: public
09.2019
EHottinger Baldwin Messtechnik GmbH.
Subject to modifications.
All product descriptions are for general information only.
They are not to be understood as a guarantee of quality or
durability.
Änderungen vorbehalten.
Alle Angaben beschreiben unsere Produkte in allgemeiner
Form. Sie stellen keine Beschaffenheits- oder Haltbarkeits
garantie dar.
Sous réserve de modifications.
Les caractéristiques indiquées ne décrivent nos produits
que sous une forme générale. Elles n'impliquent aucune
garantie de qualité ou de durabilité.
Mounting Instructions | Montageanleitung |
Notice de montage
English Deutsch Français
WI
2A01028_05_Y00_01 HBM: public WI
English
1 Safety instructions 3........................................
2 Markings used 5............................................
2.1 The markings used in this document 5..........................
2.2 Symbols on the product 5.....................................
3 Scope of supply 6..........................................
3.1 Accessories 6...............................................
4 Introduction 6..............................................
5 Structure and mode of operation 7...........................
6 Electrical connection 8......................................
6.1 Cable extensions 9..........................................
7 Mounting 10.................................................
7.1 Adjusting the centering 11.....................................
7.2 Initial stroke adjustment 12.....................................
7.3 Direct calibration 13...........................................
7.4 Measurement circle 13........................................
7.5 Frequency and acceleration limits 14............................
8 Interference effects 15.......................................
8.1 Shielding design 15...........................................
8.2 Grounding 15................................................
9 Dimensions 16..............................................
10 Mounting set 20.............................................
11 Specifications 21............................................
Safety instructions
WI A01028_05_Y00_01 HBM: public 3
1 Safety instructions
Use in accordance with the regulations
Displacement transducers of the WI series are intended for displacement
measurements such as in test rigs, for installation in measurement stands and
all types of measuring apparatus for testing and checking workpieces and for
checking processes in manufacturing or the construction industry.
Use for any additional purpose shall be deemed to be not in accordance with
the regulations.
In the interests of safety, the transducer should only be operated as described
in the Mounting Instructions. It is also essential to observe the appropriate legal
and safety regulations for the application concerned during use. The same
applies to the use of accessories.
The transducer is not a safety element within the meaning of its use as
intended. Proper and safe operation of this transducer requires proper
transportation, correct storage, assembly and mounting and careful operation
and maintenance.
General dangers of failing to follow the safety instructions
The WI displacement transducer corresponds to the state of the art and is
fail‐safe.
The transducers can give rise to residual dangers if they are inappropriately
installed and operated by untrained personnel.
Everyone involved with the installation, commissioning, maintenance or repair
of a displacement transducer must have read and understood the mounting
instructions and in particular the technical safety instructions.
Remaining dangers
The scope of supply and performance of the transducer covers only a small
area of displacement measurement technique. In addition, equipment planners,
installers and operators should plan, implement and respond to the safety
engineering considerations of displacement measurement technique in such a
way as to minimize remaining dangers. Prevailing regulations must be
Safety instructions
4A01028_05_Y00_01 HBM: public WI
complied with at all times. There must be reference to the remaining dangers
connected with displacement measurement technique.
Conversions and modifications
The transducer must not be modified from the design or safety engineering
point of view except with our express agreement. Any modification shall
exclude all liability on our part for any damage resulting therefrom.
Qualified personnel
This instrument is only to be installed by qualified personnel strictly in
accordance with the technical data and with the safety rules and regulations
which follow. It is also essential to observe the appropriate legal and safety
regulations for the application concerned. The same applies to the use of
accessories.
Qualified personnel means persons entrusted with the installation, fitting, com
missioning and operation of the product who possess the appropriate qualifica
tions for their function.
Conditions on site
Protect the transducer from damp and weather influences such as rain, snow,
etc.
Accident prevention
The relevant accident prevention regulations of the trade safety associations
must be taken into account.
Markings used
WI A01028_05_Y00_01 HBM: public 5
2 Markings used
2.1 The markings used in this document
Important instructions for your safety are specifically identified. It is essential to
follow these instructions in order to prevent accidents and damage to property.
Symbol Significance
Notice This marking draws your attention to a situation in
which failure to comply with safety requirements can
lead to damage to property.
Emphasis
See….
Italics are used to emphasize and highlight text and
references to other chapters and external docu
ments.
2.2 Symbols on the product
CE mark
The CE mark enables the manufacturer to guarantee that
the product complies with the requirements of the rele
vant EC directives (the declaration of conformity is avail
able at http://www.hbm.com/HBMdoc).
Scope of supply
6A01028_05_Y00_01 HBM: public WI
3 Scope of supply
SDisplacement transducer with fitted cable
SOperating Manual
3.1 Accessories
Mounting kit:
8 mm mounting block and tool, order no.: 1-WZB8
4 Introduction
The WI series of inductive miniature displacement transducers is designed to
be particularly compact. The transducers feature a clamping shaft of only 8 mm
and an extremely short total length.
Interrelationship between nominal displacement and total length
The transducer with the nominal displacement of 2 mm is only 66 mm long, for
the nominal displacement of 5 mm the length is 79 mm and for a nominal
displacement of 10 mm only 95 mm.
For reciprocating measurement objects or if no other means exist, the probe
versions are used.
The probe pin with the plunger is easily installed in a guideway, being not only
free from backlash and non‐wearing, but also spring‐loaded to keep it pressed
against the measurement object.
WI inductive miniature displacement probes are therefore suitable as precision
measuring probes in measurement stands and measuring apparatus.
Structure and mode of operation
WI A01028_05_Y00_01 HBM: public 7
5 Structure and mode of operation
The transducers consist of a ferromagnetic core and a coil tube, on which are
located two measuring coils arranged in tandem, together forming an inductive
half bridge.
The ferromagnetic core is mounted on a non‐magnetic rod and located in the
center of the coil system. Axial displacements of the core lead to an opposite
change in the impedance of the measuring coils.
A ferrite tube acts as an enclosure surrounding the coil system and at the same
time forms the magnetic shielding. Under a plastic molding are resistors with
which to adjust the sensitivity of the transducers and which also form the
extension to the full bridge.
In the probe versions there are guideways made of antifriction metal on the
core rod, giving access to the coil tube. A spiral spring pushes the probe pin
forward against the measurement object. On the tip is an measurement insert
according to DIN 878 with a threaded pin M2.5 and a 1/8” carbide ball.
Notice
The measurement insert is locked using a medium‐strength threadlocker.
Electrical connection
8A01028_05_Y00_01 HBM: public WI
6 Electrical connection
WI series inductive miniature displacement transducers are intended to be
operated on 4.8 kHz carrier‐frequency amplifiers. The principle of
measurement corresponds to the differential inductance coil principle.
The principle of measurement is based on an active half bridge that is
expanded internally to a full bridge connection. The displacement transducers
can be used in full‐bridge and half‐bridge mode.
The connections for transducers, a possible cable extension and measuring
amplifiers are shown in Fig. 6.1.
WH (white) Measurement signal ())
BU (blue) Excitation voltage (+)
RD (red)1) Measurement signal (-)
GY (gray) Sensor circuit (-)
GN (green) Sensor circuit (+)
Cable shield Transducer housing
BK (black) Excitation voltage (-)
1) When used in full bridge connection, otherwise not used
0)
Fig. 6.1 Electrical schematic diagram of a full bridge, six‐wire extension
Connecting to terminals:
SThe shield can be accessed through a notch in the cable sheath
SPlace the shield flat on the body of the casing.
Fitting to a connector:
SPlace the shield flat on the connector the casing.
The bridge misalignment is positive when the core is pushed inward.
The bridge misalignment is negative when the core is pushed outward. The
output voltage is zero in the middle of the measuring range.
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