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PW29P
Additional safety precautions
Load cells cannot (as passive transducers) implement any (safety‐relevant)
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 load cells would cause injury
to persons or damage to equipment, the user must take appropriate additional
safety measures that meet at least the requirements of applicable safety and
accident prevention regulations (e.g. automatic emergency shutdown,
overload protection, catch straps or chains, or other fall protection).
The electronics conditioning the measurement signal should be designed so
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. There may be risks involved if the
transducers are mounted, sited, installed and operated inappropriately, or by
untrained personnel. Everyone involved with siting, starting up, operating or
repairing a load cell must have read and understood the mounting instructions
and in particular the technical safety instructions. The load cells can be
damaged or destroyed by non‐designated use of the load cells or by
non‐compliance with the mounting and operating instructions, these safety
instructions or any other applicable safety regulations (BG safety and accident
prevention regulations) when using the load cells. Load cells can break,
particularly in the case of overloading. The breakage of a load cell can also
cause damage to property or injury to persons in the vicinity of the load cell.
If load cells 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 load cells may fail or malfunction, with the
result that persons or property may be affected (due to the loads acting on or
being monitored by the load cells).
The scope of supply and performance of the transducer covers only a small
area of weighing technology, as measurements with (resistive) strain gauge
sensors presuppose the use of electronic signal conditioning. In addition,
equipment planners, installers and operators should plan, implement and
respond to the safety engineering considerations of the weighing technology
in such a way as to minimize residual dangers. Pertinent national and local
regulations must be complied with.
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.
A3578-1.0 en/de/fr
5
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