Conditions On Site; Ambient Temperature; Moisture And Corrosion Protection - HBM U2B serie Montageanleitung

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Conditions on site

U2B series force transducers are made of rustless materials. It is nevertheless
important to protect the transducers from weather conditions such as rain,
snow, ice and salt water.
5.1

Ambient temperature

The effects of temperature on the zero signal and on sensitivity are compen­
sated.
To obtain optimum measurement results, you must comply with the nominal
(rated) temperature range. The compensation of the temperature effect on the
zero point is implemented with great care, nevertheless temperature gradients
can have a negative effect on zero point stability. Constant or very slowly
changing temperatures are therefore best. A radiation shield and all-round ther­
mal 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 prevented.
5.2

Moisture and corrosion protection

The force transducers are hermetically encapsulated and are therefore very
insensitive to moisture. The transducers achieve protection class IP67.
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 means of protection must be provided.
U2B
A00382_03_YI0_06 HBM: public
Conditions on site
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