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3.2.2 Intrinsic ATEX ia wiring
For any ASHCROFT
®
Level Switch with intrinsic safety certification (Ex ia) the following electrical parameters have to
be considered:
L
i
= 4 μH and C
i
= 20 pF
Power supply parameters:
U
i
≤ 30 V and I
i
≤160 mA
3.3 Flameproof enclosure execution Ex d
When process temperatures for Ex d are elevated, see below maximum temperature reachable on LS
stem/slide bar
Model
EPL
Ambient
Temperature
MAX. Process
Temperature
Temperature
Class
Level Switch (LS)
d
-60°C +80°C
80°C
T6
d
-60°C +70°C
150°C
T6
