Conditions On Site; Protection Against Corrosion; Deposits - HBM PW29P Series Mounting Instructions

3

Conditions on site

Series PW29P load cells are hermetically encapsulated and are therefore not
at all sensitive to the influence of moisture and humidity. The transducers attain
protection class IP68 (test conditions: 100 hours under 1m water column) and
IP69K (water at high pressure, steam cleaner), as per DIN EN60529.
Nevertheless, the load cells must be protected against constant humidity and
moisture.
3.1

Protection against corrosion

The load cell must be protected against chemicals that could attack the
transducer body steel, or the cable.
Notice
Acids and all substances that release ions also attack stainless steels and their
welded seams.
Should there be any corrosion, this could cause the transducer to fail. If this is
the case, you must provide appropriate means of protection.
3.2

Deposits

Dust, dirt and other foreign matter must not be allowed to accumulate
sufficiently to divert some of the measuring force onto the housing, thus
invalidating the measured value (force shunt).
PW29P
A03578_02_Y00_00 HBM: public
Conditions on site
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