KROHNE GFM 700 EN - Manual (Page 30)

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8.5 CONNECTION DIAGRAM
S1 = gas sensor 1
S2 = gas sensor 2
S3 = gas sensor 3
S4 = gas sensor 4
Gas sensors have type
of protection flameproof
enclosure "EEx d"
"EEx e" junction box
(incl. terminals)
"EEx d" cable gland