Burster 86-2208 User manual

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
C.F. e P.IVA 11048400151 · Capitale sociale Euro 49.920,00 ·R.E.A. di Bergamo 276749
Apparecchi di misura di precisione. Sensori e Sistemi
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Operation Manual
for Torque Sensors
For below and similar types
(Dual Range Sensors)
86-2208
86-2508
86-2531
86-2831

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
C.F. e P.IVA 11048400151 · Capitale sociale Euro 49.920,00 ·R.E.A. di Bergamo 276749
Apparecchi di misura di precisione. Sensori e Sistemi
per grandezze elettriche, termiche e meccaniche
Imprint
Valid for...
86-2208; 86-2508; 86-2531; 86-2831; and similar types
Reprint Interdiction
Reprints, even in extracts, only with written authority.
Modification
Technical changes reserved.
References in this Text
1.6 Warning Notes; Page 5
Attention must be paid to the accident prevention regulations of the trade associations.
Coverings and casings are necessary before operating the sensor. This is also valid for
commissioning, maintenance and trouble shooting.
Duties of the coverings and casings are:
Protection from detaching parts
Protection from contusion and shear
Prevention from reaching rotating parts
Prevention from being tangled up and/or getting caught by parts
Coverings may
Not grind
Not rotate
Coverings are also necessary outside of operating and motion travel areas of persons.
These demands can be modified if other sufficient safety devices are available. During operation,
the safety precautions must be operative. By vibrations, damages can occur at the device.
4.1 Couplings; Page 7
During the assembly, the sensor must be supported to protect if from falling down.
4.1.3 Alignment of the Measurement Arrangement; Page 7
For further references see coupling manual.
4.2 General; Page 8
Before the assembly, shafts must be cleaned with dissolver (e.g. acetone), no foreign particles may
adhere to them. The hub must fit corresponding to the connection.
Caution: During the assembly inadmissibly large forces may not act on the sensor or the
couplings. At small torques (< 20 N·m) connect the sensor electrically during the assembly and
observe the signal, the measurement signal may not exceed the limit values
3.2.1 Torque Sensors of 5 N·m to 15 N·m; Page 8
Sensors with nominal torques below 20 N·m are very sensitive to overload, therefore these sensors
need to be handled with greatest caution.
4.3 Freefloating Assembly; Page 8
Caution: During the assembly inadmissibly large forces may not act on the sensor or the couplings.
In this installation case, double-jointed couplings can not be used for both sides!
Risk of Breakage!
4.4 Foot Version Assembly; Page 9
Caution: During the assembly inadmissibly large forces may not act on the sensor or the couplings.
6.1 Engaging; Page 11
Warming-up period of the torque sensor is approx. 5 min.
6.4.2 Natural Resonances; Page 12
An operation of the device in natural resonance can lead to permanent damages.

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
C.F. e P.IVA 11048400151 · Capitale sociale Euro 49.920,00 ·R.E.A. di Bergamo 276749
Apparecchi di misura di precisione. Sensori e Sistemi
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Contents
1 Read First..............................................................................................................................................................4
1.1 Safety and Caution Symbols .........................................................................................................................4
1.2 Intended Use.................................................................................................................................................4
1.2.1 Neglecting of Safety Notes ....................................................................................................................4
1.2.2 Remaining Dangers...............................................................................................................................4
1.3 Reconstructions and Modifications................................................................................................................4
1.4 Personnel ......................................................................................................................................................4
1.5 Warning Notes...............................................................................................................................................4
1.6 Term Definitions.............................................................................................................................................5
1.7 Terms ............................................................................................................................................................5
1.8 Definition of the Pictograms on the Torque Sensor .......................................................................................5
2 Product Description...............................................................................................................................................5
2.1 Mechanical Setup.........................................................................................................................................5
2.2 Electrical Setup..............................................................................................................................................6
2.2.1 Sensors with Analog Output ..................................................................................................................6
2.2.2 Sensors with RS485 Interface ...............................................................................................................6
3 Mechanical Assembly............................................................................................................................................7
3.1 Couplings.......................................................................................................................................................7
3.1.1 Misalignment Possibilities of Single-Jointed Couplings .........................................................................7
3.1.2 Double-Jointed Couplings......................................................................................................................7
3.1.3 Alignment of the Measurement Arrangement ........................................................................................7
3.2 General..........................................................................................................................................................7
3.2.1 Torque Sensors of 5 N·m to 15 N·m......................................................................................................8
3.2.2 Torque Sensors from 20 N·m ................................................................................................................8
3.3 Freefloating Assembly...................................................................................................................................8
3.4 Foot Version Assembly..................................................................................................................................9
4 Electrical Connection.............................................................................................................................................9
4.1 Pin Connection ..............................................................................................................................................9
4.2 Calibration Control.........................................................................................................................................9
4.2.1 Calibration Control at Analog Output ...................................................................................................10
4.2.2 Calibration Control at RS485...............................................................................................................10
4.3 Cable...........................................................................................................................................................10
4.4 Shielding Connection...................................................................................................................................10
4.5 Running of Measuring Cables .....................................................................................................................10
4.6 Angle (Option).............................................................................................................................................10
5 Measuring............................................................................................................................................................11
5.1 Engaging .....................................................................................................................................................11
5.2 Direction of Torque......................................................................................................................................11
5.3 Static / Quasi-Static Torques.......................................................................................................................11
5.4 Dynamic Torques.........................................................................................................................................11
5.4.1 General................................................................................................................................................11
5.4.2 Natural Resonances............................................................................................................................11
5.5 Speed Limits................................................................................................................................................11
5.6 Disturbance Variables..................................................................................................................................11
6 Maintenance........................................................................................................................................................12
6.1 Maintenance Schedule................................................................................................................................12
6.2 Trouble Shooting .........................................................................................................................................12
6.3 Decommission.............................................................................................................................................13
7 Transportation and Storage.................................................................................................................................13
7.1 Transportation .............................................................................................................................................13
7.2 Storage........................................................................................................................................................13
8 Disposal...............................................................................................................................................................13
9 Calibration ...........................................................................................................................................................13
9.1 Proprietary Calibration.................................................................................................................................13
9.2 DKD-Calibration...........................................................................................................................................13
9.3 Re-Calibration..............................................................................................................................................13
10 Data Sheet.......................................................................................................................................................13

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
C.F. e P.IVA 11048400151 · Capitale sociale Euro 49.920,00 ·R.E.A. di Bergamo 276749
Apparecchi di misura di precisione. Sensori e Sistemi
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1 Read First
1.1 Safety and Caution Symbols
Caution:
Injury Risk for Persons
Damage of the Device is possible.
Note:
Important points to be considered.
1.2 Intended Use
Torque sensors are intended for the measurement of torques. This measured is further suitable for control tasks. The
valid safety regulations should be absolutely respected. The torque sensors are not safety components in the sense
of the intended use. The sensors need to be transported and stored appropriately. The assembly, commissioning and
disassembling must take place professionally.
1.2.1 Neglecting of Safety Notes
At inappropriate use, remaining dangers can emerge (e.g. by untrained personnel). The operation manual must be
read and understood by each person entrusted with the assembly, maintenance, repair, operation and disassembly
of the torque sensor.
1.2.2 Remaining Dangers
The plant designer, the supplier, as well as the operator must plan, realize and take responsibility for safety-related
interests for the sensor. Remaining dangers must be minimized. Remaining dangers of the torque measurement
technique must be pointed out.
Human mistakes must be considered. The construction of the plant must be suitable for the avoidance of dangers. A
danger-analysis for the plant must be carried out.
1.3 Reconstructions and Modifications
Each modification of the sensors without our written approval excludes liability on our part.
1.4 Personnel
The installation, assembly, commissioning, operation and the disassembly must be carried out by qualified personnel
only. The personnel must have the knowledge and make use of the legal regulations and safety instructions.
1.5 Warning Notes
Attention must be paid to the accident prevention regulations of the trade associations.
Coverings and casings are necessary before operating the sensor. This is also valid for
commissioning, maintenance and trouble shooting.
Duties of the coverings and casings are:
Protection from detaching parts
Protection from contusion and shear
Prevention from reaching rotating parts
Prevention from being tangled up and/or getting caught by parts
Coverings may
Not grind
Not rotate
Coverings are also necessary outside of operating and motion travel areas of persons.
These demands can be modified if other sufficient safety devices are available. During operation,
the safety precautions must be operative. By vibrations, damages can occur at the device.

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
C.F. e P.IVA 11048400151 · Capitale sociale Euro 49.920,00 ·R.E.A. di Bergamo 276749
Apparecchi di misura di precisione. Sensori e Sistemi
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1.6 Term Definitions
1.7 Terms
Measuring Side:
Mechanical connection of the torque sensor in which the torque to be measured is applied. Usually this side has the
smallest moment of inertia.
Drive Side:
Mechanical connection of the torque sensor on the opposite side of the measuring side, usually with the largest
moment of inertia. At static torque sensors the housing is fastened on this side.
Low Torque Resistance Side:
The shaft of the arrangement (drive, load) which can be turned considerably smaller with torque than the nominal
torque of the torque sensor M << Mnenn .
1.8 Definition of the Pictograms on the Torque Sensor
The measuring side of the torque sensor is designated as follows:
Measuring side:
or M
More information can be found on the data sheet, if needed.
2 Product Description
The sensor measures static and dynamic torques. The mounting position of the torque sensor is horizontally.
Caution: it is to be differentiated between measuring side and drive side, see data sheet of the sensor:
2.1 Mechanical Setup
The sensors consist of a torsion shaft with round shaft ends. The torsion shaft, applied with two strain gauge full
bridges, is bedded in a housing through ball bearings. For the signal transmission and/or the supply of the strain
gauge full bridges, a rotating transformer, according to the principle of a transformer, is arranged in the sensor. For
supply and measuring signal conditioning, electronics are integrated in the stator and the rotor.
SG 1
Rotating Transformer
Shaft
Measuring Side
Drive Side
Electronics in the Stator
Option
Angle Sensor
Electronics in the Rotor
SG 2
M

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
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2.2 Electrical Setup
The supply of the rotor electronics occurs by an alternating voltage, generated in the stator, which transfers to the
rotor through a rotating transformer. There, it is rectified and stabilized. With this supply, the strain gauge bridge is
fed.
For the electrical calibration control of the sensor, a control signal is up-modulated to the supply by the µ-processor in
the stator and transferred to the rotor. There, it is filtered and evaluated by the µPC, which also activates the internal
switch for the detuning of the strain gauge bridge.
The measuring signal of the strain gauge bridge is conditioned in an amplifier and then converted into a digital signal,
which will be transferred to the stator by another rotating transformer. Compared to the analog signal, the measuring
signal in digital form is much more disturbance-free. The remaining distance of the measuring signal within the
sensor occurs in digital form, completely. Thus, the measuring system achieves a high reliability of operation.
This signal is further conditioned in the stator, comes into a µ-processor, then - depending upon sensor type - it is
converted to a voltage signal, digital signal or to current and will then reach the output of the sensor and can be
directly measured at the connector.
DC
/
DC
Oscillator
4
MHz
Signal
Conditioning
Signal Adaption
Analog/Digital
Signal
Conditioning
A/D-Converter
± 15 bit
µ
-
Processor
µ
-
Processor
Rotation Angle (Option)
Supply
voltage
Calibration
Control
Signal
Output
Channel 1
Rotation
Angle
Angle Output
(Option)
Amplifier
Stator
Rotor
Rotating Transformer
Serial Data Transmission
A
B
Filter for
Control Signal
Cycle and
Control Signal
Supply and
Control Signal
Rotating Transformer
Signal Adaption
Analog/Digital
Signal
Output
Channel 2
AC
DC
SG
SG
A/D-Converter
± 15 bit
Amplifier
2
1
Block diagram for serial signal transmission.
2.2.1 Sensors with Analog Output
At this output, the digital signal is converted into DC voltage of 0 V ±5 V, proportionally to the torque and is available
at the connector output.
2.2.2 Sensors with RS485 Interface
The torque sensor has a digital interface RS485 for the signal output and automatic sensor identification.
The protocol enables high dynamics.
See separate manual for further information.

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
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Apparecchi di misura di precisione. Sensori e Sistemi
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3 Mechanical Assembly
For the assembly of a torque sensor in a shaft line, we always recommend to use couplings which can be misaligned.
3.1 Couplings
We recommend multi-disc couplings for our torque sensors. Couplings must be able to balance an axial, radial or
angular offset of the shafts and not allow large forces to act on the sensor. The assembly instructions of the
respective coupling manufacturer must be considered.
During the assembly, the sensor must be supported to protect if from falling down.
3.1.1 Misalignment Possibilities of Single-Jointed Couplings
Note: Radial misalignments are only possible in the combination of
single-jointed coupling - torque sensor (as adapter) - single-jointed coupling.
Thus, with both single-jointed couplings the torque sensor forms a double-jointed coupling.
3.1.2 Double-Jointed Couplings
Double-jointed couplings are used for the balance of inevitable angular, axial and radial misalignments.
3.1.3 Alignment of the Measurement Arrangement
Precisely alignment of the couplings reduces the reaction forces and increases the durability of the couplings.
Disturbance variables are minimized as well.
Due to the multitude of applications, an alignment of the coupling with a straight edge in two levels, vertical to each
other, is sufficient.
However, in drives with high speed an alignment of the coupling (shaft ends) with a dial gauge or a laser is
recommended.
For further references see coupling manual.
3.2 General
Before the assembly, shafts must be cleaned with dissolver (e.g. acetone), no foreign particles may
adhere to them. The hub must fit corresponding to the connection.
Connections with Clamping Piece:
The indications of the clamping piece manufacturer must be considered. The clamping piece must be able to transfer
the arising torques safely.
Caution: During the assembly inadmissibly large forces may not act on the sensor or the couplings. At
small torques (< 20 N·m) connect the sensor electrically during the assembly and observe the signal, the
measurement signal may not exceed the limit values
Angular Misalignments
Axial Misalignments
Radial Misalignments

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
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3.2.1 Torque Sensors of 5 N·m to 15 N·m
Sensors with nominal torques below 20 N·m are very sensitive to overload, therefore these sensors need
to be handled with greatest caution.
1. Connect the sensor electrically during the assembly and observe the measuring signal; the limit values may
not be exceeded in any case.
2. Align the arrangement before the parts are connected firmly.
3. Assemble the sensor at the low torque resistance side first, then at the stationary side
(this avoids impermissibly large torques from acting on the sensor).
4. Counter-hold by hand, so that impermissibly large torques or disturbance variables cannot act on the torque
sensor.
3.2.2 Torque Sensors from 20 N·m
The hub must fit corresponding to the connection.
3.3 Freefloating Assembly
The sensor is installed between two single-jointed couplings and contributes to the
balance of an inevitable axis offset between the two mechanical connections.
If no couplings are used, very large transverse forces can affect the sensor. In addition,
large forces occur on the bearings in drive and output, which limit their life span very
strongly.
Shift couplings on shafts (use entire clamping length of the coupling) and align shafts.
Assure absolutely that the data of the couplings (axis offset, angular offset, tension,
compression) are not exceeded.
Caution: During the assembly inadmissibly large forces may not act on the sensor or the couplings.
The housing must be protected from twisting e.g. by a flexible connection. The cable connection may not be used for
this.
The cable connection must be placed loosely (form of goose neck), so that it can follow the light movements of the
stator.
In this case, with both single-jointed couplings, the torque sensor forms a double-jointed coupling.
A single-jointed coupling can only balance axial and angular misalignments.
In this installation case, double-jointed couplings can not be used for both sides!
Risk of Breakage!
Flexible connection for
housing fixation
Drive
Single-jointed coupling
Single-jointed coupling
Output
Torque sensor
Cable connection

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
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3.4 Foot Version Assembly
The housing of the sensor is designed as a bearing block. A full coupling must be
installed at both shaft ends. By this, inevitable misalignments can be balanced, which
can occur during the period of operation.
If no couplings are used, very large transverse forces can affect the sensor. In addition,
large forces occur on the bearings in drive and output, which limit their life span very
strongly.
Furthermore large bending moments occur in the shaft. At small torques (< 20 N·m)
connect the sensor electrically during the assembly and observe the signal, the
measurement signal may not exceed the limit values
Shafts have to be cleaned with solvent (e.g. acetone) before the assembly
No foreign bodies may adhere to them.
Shift couplings on shaft (use entire clamping length of the coupling) and align shafts.
Absolutely note that the data of the couplings (axis offset, angular offset, tension, compression) are not exceeded.
Caution: During the assembly inadmissibly large forces may not act on the sensor or the couplings.
4 Electrical Connection
4.1 Pin Connection
Also see test certificate.
12-
pin
86-2208; 86-2531
86-2508; 86-2831
View: socket on soldering side
A
NC
NC
B
Option angle B
TTL
Option angle B
TTL
C
Signal 1
±5 V / (±10 V)
NC
D
Signal GND
0 V
NC
E
Excitation GND
0 V
Excitation GND
0 V
F
Excitation +
12 ... 28 VDC
Excitation +
12 ... 28 VDC
G
Option angle A
TTL
Option angle A
TTL
H
Signal 2
±5 V / (±10 V)
NC
J
NC
output B
RS485
K
Calibration control
L<2,0 V;
H>3,5 V
NC
L
NC
output A
RS485
M
Housing
Housing
4.2 Calibration Control
Only use calibration control in unloaded condition of the torque sensor.
Double-jointed coupling
Double-jointed coupling
Drive
Output
Torque sensor

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
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12-pin
E
Excitation GND
K
Calibration control
4.2.1 Calibration Control at Analog Output
By applying voltage of +5 V to +28 V the calibration control will switch on.
Voltage below 2,8 V will switch off the calibration control.
4.2.2 Calibration Control at RS485
The calibration control switch on is carried out by a command.
For this, ask for Protocol (document no. 090110).
4.3 Cable
Only use a shielded cable with preferably small capacity. We recommend measuring cables from our product range.
They have been tested in combination with our sensors and meet the metrological requirements.
4.4 Shielding Connection
In combination with the sensor and the external electronics, the shield forms a Faraday Cage. By this, electro-
magnetic disturbances do not have any influence on the measurement signal.
4.5 Running of Measuring Cables
Do not run measuring cables together with control or heavy-current cables. Always assure that a large distance is
kept to engines, transformers and contactors, because their stray fields can lead to interferences of the measuring
signals.
If troubles occur through the measuring cable, we recommend to run the cable in a grounded steel conduit.
4.6 Angle (Option)
At angle or speed measurement, the pulses / revolutions are
acquired. By a second transmitter trace, displaced by 90° and
flank evaluation, the pulses / revolutions can be quadrupled.
The trace, displaced by 90°, can also be used for the rotational
direction detection.
See corresponding data sheet for the output levels.
Supply for angle sensor
Stabilized supply voltage
5 V ±25 mV
Current consumption max.
20 mA
+
3,5 VDC < Ukal < 28 VDC
Ukal
Excitation GND
Control

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
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5 Measuring
5.1 Engaging
The warming-up period of the torque sensor is approx. 5 min. Afterwards the measurement can be started.
The warming-up period of the torque sensor is approx. 5 min.
5.2 Direction of Torque
Torque means clockwise or clockwise torque if the torque acts clockwise when facing the shaft end. In this case a
positive electrical signal is obtained at the output.
Torque sensors by burster can measure both, clockwise and counter-clockwise direction.
5.3 Static / Quasi-Static Torques
Static and/or quasi-static torque is a slowly changing torque.
The calibration of the sensors occurs statically on a calibration device.
The applied torque may accept any value up to the nominal torque.
5.4 Dynamic Torques
5.4.1 General
The static calibration procedure of torque sensors is also valid for dynamic applications.
Note: The frequency of torques must be smaller than the natural frequency of the mechanical measurement setup.
The band width of alternating torque must be limited to 70 % of the nominal torque.
5.4.2 Natural Resonances
Estimate of the mechanical natural frequencies:










21
011
2
1JJ
cf

f0
J1, J2
c
= Natural Frequency in Hz
= Moment of Inertia in kg*m²
= Torsional Rigidity in Nm/rad
Further methods for the calculation of natural resonances are corresponding purchasable programs or books (e.g.
Holzer-Procedure, Dubbel, Taschenbuch für den Maschinenbau, Springer Verlag)
An operation of the device in natural resonance can lead to permanent damages.
5.5 Speed Limits
The maximum speed indicated in the data sheet may not be exceeded in any operating state..
5.6 Disturbance Variables
By disturbances, measured value falsifications can occur by
Vibrations,
Temperature gradients,
Temperature changes,
Arising disturbance variables during operation, e.g. imbalance,
Electrical disturbances,
Magnetic disturbances,
EMC (electromagnetic disturbances),
Therefore avoid these disturbance variables by decoupling of vibrations, covers, etc.
c
J1
J2

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
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6 Maintenance
6.1 Maintenance Schedule
Action
Frequency
Date
Date
Date
Control of cables and connectors
1x p.a.
Calibration
< 26 months
Control of fixation (flanges, shafts)
1x p.a.
Have bearings exchanged by burster
20000 hrs
operating time
6.2 Trouble Shooting
This chart is used for searching for the most frequent errors and their elimination
Problem
Possible Cause
Trouble Shooting
No signal
No sensor excitation
Outside of permissible range
Connect excitation
Cable defect
No mains supply
Signal output connected wrong
Connect output correctly
Evaluation electronics defect
Sensor does not react to torque
Shaft not clamped
Clamp correctly
No power supply
Outside of permissible range
Connect supply
Cable defect
No mains supply
Cable defect
Repair cable
Connector connected wrong
Connect correctly
Signal has dropouts
Axial position rotor to stator outside of
tolerance
Align rotor
Cable defect
Repair cable
Zero point outside of tolerance
Cable defect
Repair cable
Shaft mounted distorted
Mount correctly
Distorted shaft string
Release from distortion
Strong lateral forces
Reduce lateral forces
Distorted flanges
Check evenness of flange-
surfaces
Shaft overloaded
Send to manufacturer
Wrong torque indication
Calibration not correct
Re-calibrate
Sensor defect
Repair by manufacturer
Torque shunt
Eliminate shunt
Oscillations
Alignment of shaft not correct
Align correctly
Unbalance
Balance the corresponding parts

burster Italia s.r.l. · Sede legale ed operativa · Via Cesare Battisti, 16/18 · 24035 Curno (BG) · Tel. [phone] · Fax [phone]
e-mail: [e-mail] · http://www.burster.it
C.F. e P.IVA 11048400151 · Capitale sociale Euro 49.920,00 ·R.E.A. di Bergamo 276749
Apparecchi di misura di precisione. Sensori e Sistemi
per grandezze elettriche, termiche e meccaniche
6.3 Decommission
All sensors must be dismantled professionally. Do not strike sensor housings with tools. Do not apply bending
moments on the sensor, e.g. through levers. The torque sensor must be supported to avoid falling down during the
dismantling.
7 Transportation and Storage
The transportation of the sensors must occur in suitable packing.
For smaller sensors, stable cartons which are well padded are sufficient (e.g., air cushion film, epoxy crisps, paper
shavings). The sensor should be tidily packed into film so that no packing material can reach into the sensor (ball
bearings).
Larger sensors should be packed in cases.
7.1 Transportation
Only release well packed sensors for transportation. The sensor should not be able to move back and forth in the
packing. The sensors must be protected from moisture.
Only use suitable means of transportation.
7.2 Storage
The storage of the sensors must occur in dry, dust-free rooms, only.
Slightly lubricate shafts and flanges with oil before storing (rust).
8 Disposal
The torque sensors must be disposed according to the valid provisions of law.
9 Calibration
At the time of delivery, torque sensors have been adjusted and tested with traceable calibrated measuring equipment
at factory side. Optionally, a calibration of the sensors can be carried out.
9.1 Proprietary Calibration
Acquisition of measurement points and issuing of a calibration protocol Traceable calibrated measuring equipment is
being used for the calibration. The sensor data are being checked during this calibration.
9.2 DKD-Calibration
The calibration of the sensor is carried out according to the guidelines of the DKD. The surveillance of the calibrating-
laboratory takes place by the DKD. At this calibration, the uncertainty of measurement of the torque measuring
instrument is determined. Further information can be obtained from burster.
9.3 Re-Calibration
The recalibration of the torque sensor should be carried out after 26 months at the latest.
Shorter intervals are appropriate:
Overload of the sensor
After repair
After inappropriate handling
Demand of high-quality standards
Special traceability requirements
10 Data Sheet
See www.burster.it