HBM U9B Operating Manual

B 20. U9B.40 en

Force transducer with
strain gauge measuring
system

U9B

Operating manual

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U9B

B 20.U9B.40 en HBM

Contents Page

Safety instructions 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 Scope of delivery 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Field of application and notes on use 7 . . . . . . . . . . . . . . . . . . . . . . .

3 Structure and mode of operation 8 . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Measuring element 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Measuring procedure, output signal 8 . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Conditions at the site of installation 8 . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Ambient temperature 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Humidity 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 Deposits 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4 External pressure 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Mechanical installation 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 Important precautions during installation 10 . . . . . . . . . . . . . . . . . . . . . . .

5.2 General guidelines for installation 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2.1 Mounting for tensile and compressive loads 10 . . . . . . . . . . . . . . . . . . . .

6 Electrical connection 1 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 Notes on wiring 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.2 Allocation of the cable cores 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.3 Connection technique 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.4 Cable extensions 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.5 Parallel connection of more then one transducers 13 . . . . . . . . . . . . . . .

7 Technical data 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Dimensions (in mm) 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 Copy of Declaration of Conformity 16 . . . . . . . . . . . . . . . . . . . . . . . . . .

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U9B

B 20.U9B.40 en HBM

Safety instructions

Use in accordance with the regulations

Force transducers in the U9B range are designed for measuring static and
dynamic compressive forces. 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 due to non–observance of the safety instructions

The U9B force 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 force transducer must have read and understood the Mounting
Instructions and in particular the technical safety instructions.

Residual dangers

The scope of supply and performance of the transducer covers only a small
area of force measurement technique. In addition, equipment planners,
installers and operators should plan, implement and respond to the safety
engineering considerations of force measurement technique in such a way as
to minimise residual dangers. Prevailing regulations must be complied with at
all times. There must be reference to the residual dangers connected with
force measurement technique.

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U9B

B 20.U9B.40 en HBM

In these mounting instructions residual dangers are pointed out using the
following symbols:

Symbol:

DANGER

Meaning: Highest level of danger
Warns of a directly dangerous situation in which failure to comply with safety

requirements will lead to death or serious physical injury.

Symbol:

WARNING

Meaning: Possibly dangerous situation
Warns of a potentially dangerous situation in which failure to comply with

safety requirements can lead to death or serious physical injury.

Symbol:

ATTENTION

Meaning: Possibly dangerous situation
Warns of a potentially dangerous situation in which failure to comply with

safety requirements could lead to damage to property, slight or moderate
physical injury.

Symbol:

NOTE

Refers to the fact that important information is being given about the product
or its use.

Symbol:
Meaning: CE mark
The CE mark signals a guarantee by the manufacturer that his product meets

the requirements of the relevant EC directives (see Declaration of conformity
at the end of this document).

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U9B

B 20.U9B.40 en HBM

Prohibition of own 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,
commissioning and operation of the product who possess the appropriate
qualifications for their function.

Conditions on site

Protect the transducer from damp and weather influences such as rain, snow,
etc.

Maintenance

The U9B force transducer is maintenance free.

Accident prevention

Although the specified nominal force in the destructive range is several times
the full scale value, the relevant accident prevention regulations from the
trade associations must be taken into consideration.

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