HBM C15 User manual

Operating Manual | Bedienungsanleitung |
Manuel d'emploi | Istruzioni per l'uso | 
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C15

Hottinger Baldwin Messtechnik GmbH
Im Tiefen See 45
D-64293 Darmstadt
Tel. [phone]
Fax [phone]
[email protected]
www.hbm.com
Mat.: 7-0111.0001
DVS: A05091_01_YCI_02 HBM: public
10.2019
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.
Con riserva di modifica.
Tutti i dati descrivono i nostri prodotti in forma generica e non
implicano alcuna garanzia di qualità o di durata dei prodotti
stessi.
保留变更的权利。
所有信息是对我品的般性描。在性能或者耐性方
它并提保证。

Operating Manual | Bedienungsanleitung |
Manuel d'emploi | Istruzioni per l'uso | 
English Deutsch Français Italiano 
C15

2A05091_01_YCI_02 HBM: public C15
English
1 Safety instructions 4........................................
2 Markings used 8............................................
2.1 The markings used in this document 8..........................
3 Scope of supply and equipment variants 9...................
3.1 Scope of supply 9............................................
3.2 Accessories (not included in the scope of supply) 9...............
3.3 Equipment variants 10.........................................
4 General application instructions 12...........................
5 Structure and mode of operation 13...........................
5.1 Force transducer operation 13..................................
5.2 SG covering agent 13.........................................
6 Conditions on site 14........................................
6.1 Ambient temperature 14.......................................
6.2 Moisture and corrosion protection 14............................
6.3 Deposits 15..................................................
7 Mechanical installation 16....................................
7.1 Important precautions during installation 16......................
7.2 General installation guidelines 17...............................
7.3 Installing the C15 18..........................................
8 Electrical connection 21......................................
8.1 Connection in a 6-wire configuration 22..........................
8.2 Cable shortening or extension 23...............................
8.3 Connection in a 4-wire configuration 23..........................
8.4 EMC protection 23............................................

C15 A05091_01_YCI_02 HBM: public 3
9 TEDS transducer identification 24............................
10 Dimensions 25..............................................
11 Specifications 27............................................

Safety instructions
4A05091_01_YCI_02 HBM: public C15
1 Safety instructions
Intended use
Force transducers in the C15 type series are designed solely for measuring
static and dynamic compressive forces within the load limits stated in the spec
ifications. Any other use is not the intended use.
To ensure safe operation, always comply with the instructions in the installation
and user manual, the following safety rules, and the data in the technical data
sheets. It is also essential to observe the applicable legal and safety regula
tions for the application concerned.
The force transducers are not intended for use as safety components. Please
also refer to the “Additional safety precautions” section. Proper and safe opera
tion of force transducers requires proper transport,correct storage, setup and
installation, and careful operation.
Load-carrying capacity limits
Comply with the information in the technical data sheets when using force
transducers. The respective specified maximum loads in particular must never
be exceeded. The following limits set out in the technical data sheets must not
be exceeded:
SForce limits
SLateral force limits
SMaximum eccentricity of force application
SBreaking forces
SPermissible dynamic loads
STemperature limits
SLimits of electrical load-carrying capacity
Please note that when several force transducers are interconnected, the load/
force distribution is not always uniform, so an individual force transducer may
be overloaded even though the cumulative signal has yet to reach the sum of
the nominal (rated) forces of the sensors connected in parallel.

Safety instructions
C15 A05091_01_YCI_02 HBM: public 5
Use as machine elements
Force transducers can be used as machine elements. When used in this man
ner, it must be noted that, to favor greater sensitivity, the force transducers
were not designed with the safety factors usual in mechanical engineering.
Please refer to the “Load-carrying capacity limits” section and the specifica
tions.
Accident prevention
The prevailing accident prevention regulations must be taken into account,
even though the breaking force is well in excess of the full scale value. This
applies in particular to transportation and mounting.
Additional safety precautions
Force transducers cannot (as passive transducers) implement any (safety-rele
vant) cutoffs. This requires additional components and constructive measures,
for which the installer and operator of the plant is responsible.
In cases where a breakage or malfunction of the force transducer would cause
injury to persons or damage to property,the user must take appropriate addi
tional safety precautions that at least meet the requirements of applicable acci
dent prevention regulations (e.g. automatic emergency shutdown, overload
protection, catch straps or chains, and other fall protection).
The electronic processor that processes the measurement signal should be
designed so that failure of the measurement signal cannot lead to secondary
failures.
General dangers of failing to follow the safety instructions
Force transducers are state-of-the-art and failsafe. Transducers can be dan
gerous if installed, set up, started up or operated incorrectly or by untrained
personnel. Every person involved in setting up, starting up, operating or re
pairing a force transducer must have read and understood the installation man
ual and the technical safety instructions in particular.
Force transducers can be damaged or destroyed if used for other purposes
than their intended use or by non-compliance with the installation and user’s
manual, these safety instructions or other applicable safety regulations (acci
dent prevention regulations from the Employers' Liability Insurance Associa

Safety instructions
6A05091_01_YCI_02 HBM: public C15
tion). Force transducers can break, particularly if overloaded. The breakage of
a force transducer can also cause damage to property or injury to persons in
the vicinity of the force transducer.
If force transducers are not used according to their designated use, or if the
safety instructions or specifications in the mounting and operating instructions
are ignored, it is also possible that the force transducer may fail or malfunction,
with the result that persons or property may be affected (due to the loads act
ing on or being monitored by the force transducer).
The scope of supply and performance of the transducer covers only a small
area of force measurement technology, as measurements with (resistive) strain
gage sensors presuppose the use of electronic signal processing. In addition,
plant planners, equippers and operators are responsible for planning and im
plementing force measurement systems such as to minimize residual risks.
Comply with pertinent national and local regulations.
Conversions and modifications
The design or safety engineering of the transducer must not be modified with
out our express permission. Any modification shall exclude all liability on our
part for any damage resulting therefrom.
Maintenance
C15 force transducers are maintenance-free. However, we recommend having
force transducers calibrated at regular intervals.
Disposal
In accordance with national and local environmental protection, material recov
ery and recycling regulations, old transducers that are no longer serviceable
must be disposed of separately from normal household waste. If you need
more information about disposal, please contact your local authorities or the
dealer from whom you purchased the product.

Safety instructions
C15 A05091_01_YCI_02 HBM: public 7
Qualified personnel
Qualified personnel are persons familiar with the setup, installation, startup,
operation and dismantling of the product and have the necessary qualifications
for this work. This includes people who meet at least one of the three following
requirements:
1. Knowledge of the safety concepts of automation technology is a require
ment and as project personnel, you must be familiar with these concepts.
2. As automation plant operating personnel, you have been instructed how to
handle the machinery. You are familiar with the operation of the equipment
and technologies described in this documentation.
3. As commissioning engineers or service engineers, you have successfully
completed the training to repair the automation systems. You are also au
thorized to operate, ground and label circuits and equipment in accordance
with safety engineering standards.
It is also essential to comply with the legal and safety requirements for the ap
plication concerned during use. The same applies to the use of accessories.
The force transducer may only be installed by qualified personnel, strictly in
accordance with the specifications and with the safety requirements and regu
lations.

Markings used
8A05091_01_YCI_02 HBM: public C15
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 Meaning
WARNING This marking warns of a potentially dangerous situa
tion in which failure to comply with safety require
ments may result in death or serious physical injury.
CAUTION This marking warns of a potentially dangerous situa
tion in which failure to comply with safety require
ments may result in slight or moderate physical injury.
Notice This marking draws your attention to a situation in
which failure to comply with safety requirements may
result in damage to property.
Important
This marking draws your attention to important infor
mation about the product or about handling the prod
uct.
Tip
This marking indicates tips for use or other informa
tion that is useful to you.
Information
This marking draws your attention to information
about the product or about handling the product.
Emphasis
See …
Italics are used to emphasize and highlight text and
identify references to sections, diagrams, or external
documents and files.

Scope of supply and equipment variants
C15 A05091_01_YCI_02 HBM: public 9
3 Scope of supply and equipment variants
3.1 Scope of supply
SC15 force transducer
SC15 mounting instructions
STest record
SMachine handles for handling on 500 kN and 1 MN versions
3.2 Accessories (not included in the scope of supply)
Ordering num
ber
K-CAB-F Configurable connection cable for connecting the force trans
ducer to the bridge amplifier.
1-KAB157-3 Connection cable KAB157-3; IP67 (with bayonet lock), 3 m
long, TPE outer sheath; 6 x 0.25 mm2; free ends, shielded,
outer diameter 6.5 mm
1-KAB158-30 Connection cable KAB158-3; IP54 (with screw lock); 3 m
long,TPE outer sheath; 6 x 0.25 mm2; free ends, shielded, out
side diameter 6.5 mm
3-3312.0382 Loose cable socket (bayonet connection)
1-EEK4 Ground cable, 400 mm long
1-EEK6 Ground cable, 600 mm long
1-EEK8 Ground cable, 800 mm long
1-EDO3/50KN Thrust piece to ISO376, suitable for C15 with nominal (rated)
forces from 2.5 kN to 50 kN
1-EDO3/100 kN Thrust piece to ISO376, suitable for C15 with nominal (rated)
forces 100 kN and 250 kN
1-EDO3/500kN Thrust piece to ISO376, suitable for C15 with nominal (rated)
force 500 kN
1-EDO3/1 MN Thrust piece to ISO376, suitable for C15 with nominal (rated)
force 1 kN

Scope of supply and equipment variants
10 A05091_01_YCI_02 HBM: public C15
3.3 Equipment variants
The C15 force transducer always comes supplied with an adapter (lower load
application).
Fig. 3.1 C15 on delivery with bayonet connector and load application bolts and
double bridge
The force transducer is available in different versions. The following options are
available:
1. Nominal (rated) force
You can purchase force transducers with nominal (rated) forces between
2.5 kN and 1 MN. The nominal (rated) force is the force at which the sensor
provides the rated output specified on the type plate as the output signal.
2. Number of measuring bridges
You can purchase the force transducer with a single bridge (SB), and then
the C15 comes supplied with one measuring bridge. The double-bridge ver
sion (DB) is available as an option. In this case, the C15 is supplied with
two electrically isolated bridge circuits, so that two independently working
bridge amplifiers can be connected.
3. Transducer identification
You can purchase the force transducer with transducer identification
("TEDS"). A TEDS (Transducer Electronic Data Sheet) chip allows you to

Scope of supply and equipment variants
C15 A05091_01_YCI_02 HBM: public 11
store the transducer data (rated outputs) in a chip, which can be read by a
connected measuring device. In the double bridge version, each measuring
bridge has a dedicated TEDS chip. Also see section 9
“TEDS transducer identification”, page 24.
4. Plug protection
On request, we can fit plug protection, consisting of a strong square tube,
so that the plug is protected against mechanical damage.
5. Plug version
The standard version is the device plug with bayonet connection (PT02E
10-6P compatible). You also have the option of ordering a device plug with
a screw thread (PC02E 10-6P compatible).
6. Rated output adjustment
The exact rated output is stated on the type plate of the force transducer
and in the enclosed test report. On request, the transducer can be factory
set to a sensitivity of 2 mV/V (all force transducers with nominal (rated)
forces up to and including 10 kN) or 3 mV/V (all force transducers with nom
inal (rated) forces greater than 10 kN). The rated output range of a trans
ducer than has not been adjusted lies between 2 and 3 mV/V (all force
transducers with nominal (rated) forces up to and including 10 kN) or be
tween 4 and 4.8 mV/V (all force transducers with nominal (rated) forces
greater than 10 kN). Please note the input range for your amplifier.

General application instructions
12 A05091_01_YCI_02 HBM: public C15
4 General application instructions
Force transducers are suitable for measuring compressive forces. They pro
vide highly accurate static and dynamic force measurements and must there
fore be handled very carefully. Particular care must be taken when transporting
and installing the devices. Dropping or knocking the transducer may cause per
manent damage.
The permissible limits for mechanical, thermal and electrical stress are listed in
section 11 "Specifications" on page 27. It is essential to take these limits into
account when planning the measuring set-up, during installation and, ulti
mately, during operation.

Structure and mode of operation
C15 A05091_01_YCI_02 HBM: public 13
5 Structure and mode of operation
5.1 Force transducer operation
The measuring element is a steel loaded member made of steel (for nominal
(rated) forces from 25 kN) or high-strength aluminum (for nominal (rated)
forces up to 10 kN) to which strain gages (SG) are applied. The SGs for each
measuring circuit are installed so that four extend and four shorten when a
force acts on the transducer.
Each strain gage changes its ohmic resistance in proportion to its change in
length and so misaligns the Wheatstone bridge. If bridge excitation voltage is
present, the circuit produces an output signal proportional to the change in re
sistance and therefore also proportional to the applied force. The SGs are ar
ranged such that parasitic forces or torques and temperature effects are com
pensated as much as possible.
5.2 SG covering agent
To protect the SGs, the force transducers have thin cover plates that are
welded on at the top and bottom (steel versions, nominal (rated) forces from
10 kN) or glued (aluminum versions, nominal (rated) forces up to and including
10 kN). This procedure offers the SGs a high level of protection against envi
ronmental influences.
In order to retain their protective effect, these plates must not be damaged in
any way.

Conditions on site
14 A05091_01_YCI_02 HBM: public C15
6 Conditions on site
Protect the transducer from weather conditions such as rain, snow, ice, and
salt water.
6.1 Ambient temperature
The temperature coefficient of zero signal and rated output are compensated.
To obtain optimum measurement results, you must comply with the nominal
(rated) temperature range.
The SGs are designed and arranged to ensure insensitivity to temperature gra
dients. Despite this, temperatures that are constant and at best slowly chang
ing have a favorable effect on accuracy. A radiation shield and all-round ther
mal insulation produce noticeable improvements, but must not be allowed to
set up a force shunt.
6.2 Moisture and corrosion protection
The force transducers are hermetically encapsulated and are therefore very
insensitive to moisture.
The protection class of the sensors depends on the choice of electrical connec
tion. In the standard version with a bayonet connector, the sensor achieves a
rating of IP67 to DIN EN 60259 (test conditions: 0.5 hours under a 1-m column
of water). This applies when the plug is connected.
Degree of protection IP64 is achieved in the “threaded connector” version.
With stainless steel force transducers, please note that acids and all materials
which release ions will also attack stainless steels and their seam welds. Any
resulting corrosion could cause the force transducer to fail. In this case, appro
priate means of protection must be provided.
We recommend protecting the transducer against long-term exposure to mois
ture and weather conditions.

Conditions on site
C15 A05091_01_YCI_02 HBM: public 15
6.3 Deposits
Dust, dirt and other foreign matter must not be allowed to accumulate suffi
ciently to divert some of the measuring force, thus invalidating the measured
value (force shunt).

Mechanical installation
16 A05091_01_YCI_02 HBM: public C15
7 Mechanical installation
7.1 Important precautions during installation
SHandle the transducer with care.
SNote the requirements for the force application parts in accordance with the
subsequent sections of these instructions.
SWelding currents must not be allowed to flow through the transducer. If
there is a risk that this might happen, you must use a suitable low-ohm con
nection to electrically bypass the transducer. HBM provides the highly flexi
ble EEK ground cable for this purpose, for example, that is screwed on
above and below the transducer.
SMake sure that the transducer cannot be overloaded.
WARNING
There is a danger of the transducer breaking if it is overloaded. This can cause
danger for the operating personnel of the system in which the transducer is
installed.
Implement appropriate safety measures to avoid overloads or to protect
against the resulting dangers. The maximum possible mechanical stresses,
especially the breaking force,are noted in the specifications.
SMake certain that the maximum eccentricity, maximum service load, and
permitted load-carrying capacity of the force application parts are not ex
ceeded when installing and using the transducer.

Mechanical installation
C15 A05091_01_YCI_02 HBM: public 17
7.2 General installation guidelines
The forces to be measured must act on the transducer as accurately as possi
ble in the direction of measurement. Eccentric loading and lateral forces can
produce measurement errors and even destroy the transducer if limit values
are exceeded.
The customer's own structural elements must meet the following conditions:
SThe upper and lower force application parts must be aligned as accurately
as possible on one axis. Installation is made easier by centering aids on the
underside. The centering diameter corresponds to dimension P, the useful
centering depth is between 4.5 mm and 6 mm, depending on the nominal
(rated) force. (see drawing in section 10 “Dimensions”, page 25)
SMake certain that the maximum lateral forces, force application eccentricity
and force limits are not exceeded during installation and operation.
Fnom: Force in direction of mea
surement
Fex: Force parallel to direction of
measurement, but outside center of
force transducer
FQ: Force vertical to direction of
measurement
Md: Torque
Fig. 7.1 Effective parasitic loads

Mechanical installation
18 A05091_01_YCI_02 HBM: public C15
Tip
The C15 is a high-quality transfer standard. It is advisable to always have the
sensor calibrated with the loading fittings with which it is planned to use the
sensor. Placing an order for measurement chain calibration will ensure maxi
mum certainty of measurements.
7.3 Installing the C15
You can screw the C15 directly onto your structural elements, or place it on a
suitable substructure. The force transducer measures static and dynamic com
pressive forces, and can be used at full oscillation width.
Load is applied via the spherical load button on top of the force transducer. We
recommend using our thrust pieces, to ensure ideal force application. These
thrust pieces, which are placed on the convex load button, have a suitable sur
face quality.
If you want to do without a thrust piece, please note that surface of the struc
tural component that applies the force to the spherical load application part
must be ground, and have a hardness of at least 40 HRC.
If possible, use the centering bores in the underside of the sensor (dimen
sion p, see section 7.2 “General installation guidelines”, page 17).