Density Meter LB 444 SECTION 2. SYSTEM DESCRIPTION
10
Shutter switches signal the position of the sources.
Two versions are available:
a) Version for use in
areas not endangered of explosion
:
2 Reed contacts max. 250 V, 40 VA
1 x for OPEN, 1 x for CLOSED.
b) Version for use in the
areas endangered of explosion
:
1 proximity switch for position CLOSED.
It has to be connected to an inherently safe power supply.
Closed
Open
Switch flag
Cover cap
Connection for
pressurized air
electr. signal
OPEN/CLOSED
Proximity
switch
Figure 6: Shutter switch for ex-protected area
See the drawings that are part of the documentation for detailed information on
the construction and function of the shielding type used.
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