HBK U9C Montageanleitung Seite 7

Additional safety precautions
Force transducers cannot (as passive transducers or as a measurement chain)
implement any (safety-relevant) cutoffs. This requires additional components and design
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 equipment, the user must take appropriate additional safety
precautions that meet at least the applicable safety and accident prevention regulations
(e.g. automatic emergency shutdown, overload protection, catch straps or chains, or
other fall protection).
The electronics that process 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. The transducers can be dangerous if
they are mounted, set up or operated improperly, or by untrained personnel. Every person
involved in setting up, starting up, operating or repairing a force transducer must have
read and understood the mounting instructions and in particular the technical safety
instructions. The force transducers can be damaged or destroyed by non-designated use
of the force transducer or by non-compliance with the mounting and operating manual,
these safety instructions or other applicable safety regulations (safety and accident
prevention regulations of the Employers' Liability Insurance Association) when using the
force transducers. A force transducer can break, particularly if it is overloaded.
The breakage of a force transducer can cause damage to property or injury to persons in
the vicinity of the force transducer.
If force transducers are not used as intended, or if the safety instructions or
specifications in the mounting and operating instructions are ignored, it is also possible
that a force transducer may fail or malfunction, with the result that persons may be
injured or property damaged (due to the loads acting 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 require
electronic amplification, and measurement chains require further signal processing.
Equipment planners, installers and operators should always plan, implement and respond
to the safety engineering considerations of force measurement technology in such a way
as to minimize residual dangers. Pertinent national and local regulations must be
complied with.
Conversions and modifications
The design or safety engineering of the transducer must not be modified without our
express permission. Any modification shall exclude all liability on our part for any
resulting damage.
U9C
5
SAFETY INSTRUCTIONS