Material Resistance; Grounding - SICK NAMUR LFV 310 Instructions

as protection against voltage surges according to EN 60079-14 chapter 12.3.
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Material resistance

The LFV 310/330.C******N/W** must only be used in media against which the materials of the wet-
ted parts are sufficiently resistant.
The min. fatigue strength of the vibrating element is 8.6 x 10
of 7.5 µm. The lifetime is minimum 20 years.
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Grounding

The LFV 310/330.C******N/W** must be grounded electrostatically (transfer resistance ≤ 1 MΩ),
e.g. via the internal or external ground terminal on the housing. The metallic parts of the LFV
310/330.C******N/W** are electrically connected with the internal or external ground terminal on the
housing.
LFV 310/330
load changes with a max. amplitude
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