HBM PW29 Série Notice De Montage page 5

PW29
0
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, over-
load protection, catch straps or chains, or other fall protection).
The layout of the electronics conditioning the measurement signal should be
such that measurement signal failure does not cause damage.
Explosion protection version option
The following also apply to the load cells supplied with this option, that are to
be used in potentially explosive atmospheres:
w It is essential to comply with the relevant code of practice during
installation.
w In the explosion protection version, the connection cable of the single point
load cells has free ends (for the cable wire assignment, see section 4.1).
w There must be compliance with the installation conditions cited in the
Certificate of Conformity and/or the Type Examination Certificate.
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. 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 regula-
tions) 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 prop-
erty or injury to persons in the vicinity of the load cell.
If the load cells are not deployed 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 act-
ing 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 gage
A3313-1.0 en/de/fr
5
HBM