Dräger SAM 3100, Инструкция по эксплуатации

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10 Dräger SAM 3100/3200
Wiring diagrams
7.2 Wiring diagram for Polytron 3000 / Polytron 7000
Installing the transmitter in potentially explosive atmospheres of zone 0 or zone 1
Installing the transmitter in potentially explosive atmospheres of zone 2 or in areas not at risk of explosion.
Installing the transmitter in areas not at risk of explosion:
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Non-explosion-hazard area Explosion-hazard area, zone 0, 1 or Div. 1
Safety barrier
Control unit
Ex i
PA
Earth point
4 ... 20 mA
0 V
+
–
+
4 to 20 mA
+24 V
WARNING
The category 1 classification must be cut out of the rating plate hanger at the location provided. Once the equipment has
been operated in accordance with this installation, it may no longer be installed in mines in which firedamp may occur,
nor in potentially explosive atmospheres of zone 0 or zone 1 (equipment category 1 or 2). Risk of explosion!
!
WARNING
The Ex protection classification must be removed from the transmitter. Once the transmitter has been operated in
accordance with this installation, it may no longer be installed in potentially explosive atmospheres.
!
02323944_en.eps
Non-explosion-hazard area
without a safety barrier
Control unit
4 ... 20 mA
0 V
+
–
+
4 to 20 mA
+24 V
Explosion-hazard area, zone 2 or non-explosion hazard