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4 Mounting
VEGABAR 82 • Profibus PA
45031-EN-220624
1
2
Fig. 13: Position of the filter element - Ex-d version
1 Rotatable metal ring
2 Filter element
Instruments with absolute pressure have a blind plug mounted
instead of the filter element.
The Second Line of Defense (SLOD) is a second level of the process
separation in form of a gas-tight leadthrough in the housing neck,
preventing products from penetrating into the housing.
With these instruments, the process assembly is completely en-
capsulated. An absolute pressure measuring cell is used so that no
ventilation is required.
With relative pressure measuring ranges, the ambient pressure is
detected and compensated by a reference sensor in the electronics.
1
2
1
2
Fig. 14: Position of the filter element - gastight leadthrough
1 Filter element
2 Gas-tight leadthrough
Filter element - Position
Second Line of Defense
Содержание VEGABAR 82
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