Structure And Principle Of Operation; Conditions On Site; Ambient Temperature; Moisture And Other Ambient Conditions - HBM RSCC Notice De Montage

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3

Structure and principle of operation

The measuring element is a steel loaded member to which strain gauges (SG)
are applied. The SG are arranged so that two are stretched and the other two
compressed when a load acts on the transducer.
4

Conditions on site

4.1 Ambient temperature

The temperature effects on the zero signal and on the sensitivity are
compensated.
To obtain optimum measurement results, the nominal (rated) temperature
range must be observed. Temperature‐related measurement errors are
caused by heating (e.g. radiant heat) or by cooling on one side. A radiation
shield and all‐round thermal insulation produce noticeable improvements, but
must not be allowed to form a force shunt.

4.2 Moisture and other ambient conditions

Series RSCC load cells are hermetically sealed and are therefore not at all
sensitive to humidity and moisture. The transducers attain protection class
IP68 as per DIN EN 60529 (test conditions: 100 hours under 1 m water
column). Nevertheless, the load cells must be protected against permanent
humidity and moisture.
The load cell must be protected against chemicals that could attack the
transducer body steel, or the cable. With stainless steel load cells, please
note that acids and all materials which release ions will also attack stainless
steels and their welded seams. Should there be any corrosion, this could
cause the load cell to fail. In this case, appropriate protective measures must
be implemented.

4.3 Deposits

Dust, dirt and other foreign matter must not be allowed to accumulate
sufficiently to divert some of the measuring force, thus invalidating the
measured value (force shunt).
HBM
RSCC
A3018-3.2 en/de/fr