Uni-Probe LB 490
BERTHOLD TECHNOLOGIES GmbH & Co. KG
1 – 23
Volume 1 2 Use and Function
1
2 Use and Function
The Uni-Probe LB 490 has been designed as a level gauging system
and may be used only for this purpose. If it is used in any manner
not described in this User’s Manual, the protection of the device is
impaired and all warranty claims are voided.
BERTHOLD TECHNOLOGIES guarantees only that the device com-
plies with the published specifications. The Uni-Probe may be
installed only if it is undamaged, dry and clean. Alteration work and
modification of the system components are not permitted.
Conformance with standards The standards and directives the Uni-Probe complies with are listed
in Volume 1 in section "11.4 EG Declaration of Conformity" on
page 1–112.
Protection type The degree of protection of the Uni-Probe according to IEC 60529
is max. IP 66. It depends on the installed screwed cable glands and
adapters.
Limits of use The Uni-Probe LB 490 for HART
®
is qualified with an FMEDA for
“intrinsically safe measurements”.
The following Uni-Probe versions are not qualified as “intrinsically
safe measurements”:
–HART
®
with intrinsically safe current output
– with field bus interface connection for FOUNDATION
™
Fieldbus
or Profibus PA.
Misuse warning The following is contrary to the intended use and, therefore, has to
be prevented:
– Use under other conditions and prerequisites than those speci-
fied by the manufacturer in the technical documents, data
sheets, operating and installation instructions and in other
specifications.
– Use after repair by persons who have not been authorized by
BERTHOLD TECHNOLOGIES.
– Use in a damaged or corroded state.
– Operation with open or inadequately closed cover.
– Operation with inadequately tightened adapters and screwed
cable glands.
– Operation without observing the safety precautions defined by
the manufacturer.
– Tampering with or bypassing existing safety installations.
Maintenance The Level Gauge Uni-Probe LB 490 may only be installed, serviced
and repaired by qualified persons (see section "3.2 Qualified Per-
sons", page 1–26).
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