Conditions On Site; Ambient Temperature; Moisture And Corrosion Protection; Deposits - HBK U10F Montageanleitung

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CONDITIONS ON SITE

U10F sensors are made of non-rusting materials and special technology has been used
to reliably protect the HBK screws from corrosion. Despite this, we recommend protect­
ing force transducers from weather conditions such as rain, snow, ice and salt water.
6.1

Ambient temperature

The effects of temperature on the zero signal and rated output are compensated. To ob­
tain optimum measurement results, comply with the nominal (rated) temperature range.
The strain gages are designed and arranged to ensure a high insensitivity to temperature
gradients. Despite this, temperatures that are constant and, ideally, change slowly have a
favorable effect on accuracy. A radiation shield and all-round thermal insulation produce
noticeable improvements, but must not be allowed to create a force shunt.
6.2

Moisture and corrosion protection

The force transducers are hermetically encapsulated and are therefore very insensitive to
moisture.
The degree of protection of the sensors depends on the choice of electrical connection.
In the standard version with bayonet connector, the sensor achieves rating IP67 as per
DIN EN 60259 (test conditions: 0.5 hours under 1 m water column). This information ap­
plies if the plug is connected.
With the "threaded connector" version, a rating of IP64 is achieved. With a fixed cable, the
sensors achieve a rating of IP68.
With stainless steel force transducers, please note that acids and all materials which re­
lease ions will also attack stainless steels and their weld seams. Any resulting corrosion
could cause the force transducer to fail. In this case, appropriate protective measures
must be provided.
We recommend protecting the sensor from long-term exposure to moisture and weather
conditions.
6.3

Deposits

Dust, dirt and other foreign matter must not be allowed to accumulate to such an extent
that some of the measuring force is diverted, invalidating the measured value (force
shunt).
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U10F
CONDITIONS ON SITE