Conditions On Site; Ambient Temperature; Moisture And Corrosion Protection; Deposits - HBM C11 Montageanleitung

6

CONDITIONS ON SITE

C11 series force transducers are made of rustless materials. It is nevertheless important
to protect the transducers from weather conditions such as rain, snow and ice, and salt
water.
6.1

Ambient temperature

The effects of temperature on the zero signal and on sensitivity are compensated.
To obtain optimum measurement results, comply with the nominal (rated) temperature
range. The strain gage arrangement results in extreme insensitivity to temperature gradi­
ents, due to the construction (radially symmetric shear force transducer). Nevertheless,
constant or very slowly changing temperatures are best. A radiation shield and all-round
thermal insulation produce noticeable improvements. However, they must not be allowed
to set up a force shunt, i.e. slight movement of the force transducer must not be pre­
vented.
6.2

Moisture and corrosion protection

The force transducers are hermetically encapsulated and are therefore insensitive to
moisture under normal operating conditions. Despite the careful encapsulation, it makes
sense to protect the transducers against permanent exposure to moisture.
The force transducer must be protected against chemicals that could attack the steel.
With stainless steel force transducers, note that acids and all materials which release
ions will in general also attack stainless steels and their welded seams. Should there be
any corrosion, this could cause the force transducer to fail. In this case, appropriate pro­
tective measures must be provided.
6.3

Deposits

Dust, dirt and other foreign matter must not be allowed to accumulate sufficiently to con­
duct any of the measuring force around the transducer, thus invalidating the measured
value (force shunt).
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C11
CONDITIONS ON SITE