HBK PW15B Notice De Montage page 9

3 CONDITIONS ON SITE
The PW15B series load cells are covered with a potting mass to protect the SG (strain
gauges) against moisture. The transducers attain protection class IP67 as per DIN EN
60529. Nevertheless, the load cells must be protected against permanent moisture influ­
ence.
3.1 Protection against corrosion
The load cells 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. In this case, appro­
priate protective measures should be implemented.
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).
PW15B
CONDITIONS ON SITE
7