Conditions On Site; Ambient Temperature; Moisture And Corrosion Protection - HBM U10M Montageanleitung

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Conditions on site

Protect the transducer from weather conditions such as rain, snow, ice, and
salt water.
6.1

Ambient temperature

The temperature effects on the zero signal and on the rated output are com­
pensated.
To obtain optimum measurement results, the nominal (rated) temperature
range must be complied with. The arrangement of the SG results in extreme
insensitivity to temperature gradients, due to its construction. Nevertheless,
constant or very slowly changing temperatures are best. A radiation shield and
all-round thermal insulation produce noticeable improvements, but must not be
allowed to set up a force shunt.
6.2

Moisture and corrosion protection

The force transducers are hermetically encapsulated and are therefore very
insensitive to moisture.
The protection class of the sensors depends on the choice of electrical connec­
tion. In the standard version with a bayonet connector, the sensor achieves
degree of protection IP 67 as per DIN EN 60259 (test conditions: 0.5 hours
under a 1-meter water column). This applies when the plug is connected.
Optionally, the force transducers are also available fitted with a fixed cable. In
this version, all U10 achieve degree of protection IP68 with a nominal (rated)
force equal to or greater than 12.5 kN. In the threaded connector version, the
sensors achieve degree of protection IP64.
The transducer must be protected against chemicals that could attack the steel
(nominal (rated) forces from 12.5 kN) or aluminum (nominal (rated) forces up to
5 kN).
With stainless steel force transducers, note that acids and all materials which
release ions will also attack stainless steels and their seam welds. Any result­
ing corrosion could cause the force transducer to fail. In this case,
appropriate protective measures must be implemented.
U10M/U10S
A01385_06_YIC_06 HBM: public
Conditions on site
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