HBM PW25 User manual
Mounting Instructions | Montageanleitung |
Notice de montage
English Deutsch Français
Single point load cells
Plattformwägezellen
Pesons platforme
Hottinger Baldwin Messtechnik GmbH
Im Tiefen See 45
D-64239 Darmstadt
Tel. +49 6151 803-0
Fax +49 6151 803-9100
www.hbm.com
Mat.: 7-2001.2323
DVS: A2323-2.0 HBM: public
02.2018
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
Single point load cells
Plattformwägezellen
Pesons platforme
2A2323-2.0 HBM: public
English
1 Safety instructions 3........................................
2 Markings used 6............................................
2.1 The markings used in this document 6..........................
2.2 Symbols on the product 7.....................................
3 Load application 8..........................................
4 Electrical connection 9......................................
4.1 Connecting in four‐wire and six‐wire configurations 9.............
4.2 Cable extensions 10..........................................
4.3 Shortening the cable 11.......................................
4.4 Parallel connection (option) 11..................................
4.5 EMC protection 11............................................
5 Specifications 12............................................
Safety instructions
A2323-2.0 HBM: public 3
1 Safety instructions
In cases where a breakage would cause injury to persons or damage to equip
ment, the user must take appropriate safety measures (such as safety devices
to protect against falls, collapses or overloads). For safe and trouble‐free op
eration, load cells must not only be correctly transported, stored, sited and
mounted but must also be carefully operated and maintained.
It is essential to comply with the relevant accident prevention regulations. In
particular you should take into account the limit loads quoted in the specifica
tions.
Appropriate use
Load cells are designed for metrological applications. Use for any additional
purpose shall be deemed to be not appropriate.
In the interests of safety, load cells should only be operated as described in the
Mounting Instructions. It is also essential to comply with the legal and safety
requirements for the application concerned during use. The same applies to
the use of accessories.
Load cells can be used as machine elements (for container and silo weighing,
for example). In these situations, you must make sure that for greater sensitiv
ity, the load cells are not constructed with the customary safety factors found in
machine design. Load cells are not safety elements within the meaning of ap
propriate use. The layout of the electronics conditioning the measurement sig
nal should be such that measurement signal failure does not cause damage.
General dangers of failing to follow the safety instructions
Load cells are state‐of‐the‐art and reliable. Load cells can give rise to remain
ing dangers if they are inappropriately installed and operated by untrained per
sonnel.
Everyone involved with siting, starting up, maintaining or repairing a load cell
must have read and understood the Mounting Instructions and in particular the
technical safety instructions.
Safety instructions
4A2323-2.0 HBM: public
Remaining dangers
The scope of supply and performance of the load cells covers only a small
area of weighing technology. In addition, equipment planners, installers and
operators should plan, implement and respond to the safety engineering con
siderations of the weighing technology in such a way as to minimize remaining
dangers. Prevailing regulations must be complied with at all times. Reference
must be made to the remaining dangers associated with the weighing technol
ogy.
Ambient conditions
In the context of your application, please note that because of the alloy ele
ments used, the high‐strength aluminum alloy only has limited corrosion resist
ance if it comes into contact with electrolytes or if there are high and low pH
values. With stainless steel single point load cells, please note that acids and
all materials which release ions will also attack all grades of stainless steel and
their welded seams.
Should there be any corrosion, this could cause the load cell to fail. If this is the
case, the operator must take appropriate protective measures.
Unauthorized conversions and modifications are prohibited
Load cells must not be modified from the design or safety engineering point of
view except with our express agreement. Any modification shall exclude all li
ability on our part for any damage resulting therefrom.
Qualified personnel
Load cells must only be installed by qualified personnel, strictly in accordance
with the specifications in conjunction with the safety requirements and regula
tions listed below. 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 siting, mounting, starting up
and operating the product, who possess the appropriate qualifications for their
function.
Safety instructions
A2323-2.0 HBM: public 5
Accident prevention
The prevailing accident prevention regulations must be taken into account,
even though the breaking load is well in excess of the full scale value. Pay par
ticular attention to the following data from the specifications
- limit load (EL)
- limit load at max. eccentricity
- limit lateral loading (ELq)
- breaking load.
Explosion protection version (option)
SWhen installing this version, it is essential to comply with the relevant
installation regulations.
SThere must be compliance with the installation conditions cited in the Dec
laration of Conformity and/or the Type Examination Certificate.
Notice
Load cells are precision measuring elements and must be handled carefully
during mounting and transportation. Knocking or dropping the load cells can
damage them. Suitable retainers must be used during installation and opera
tion to protect the load cells against overloading. No forces or moments must
be directed via the spring area during mounting.
Markings used
6A2323-2.0 HBM: public
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
WARNING This marking warns of a potentially dangerous
situation in which failure to comply with safety
requirements can result in death or serious physical
injury.
CAUTION This marking warns of a potentially dangerous
situation in which failure to comply with safety
requirements can result in slight or moderate physical
injury.
Notice This marking draws your attention to a situation in
which failure to comply with safety requirements can
lead to damage to property.
Important
This marking draws your attention to important
information about the product or about handling the
product.
Tip
This marking indicates application tips or other
information 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
references to other chapters and external documents.
Markings used
A2323-2.0 HBM: public 7
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).
Statutory marking requirements for waste disposal
National and local regulations regarding the protection of
the environment and recycling of raw materials require
old equipment to be separated from regular domestic
waste for disposal.
For more detailed information on disposal, please contact
the local authorities or the dealer from whom you pur
chased the product.
Load application
8A2323-2.0 HBM: public
3 Load application
Load must not be applied to the side where the cable connection is located, as
this would cause a force shunt.
platformcenter
load application connection
cable
mounting
spacing washer
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