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NOTICE
i
i
To ensure that a fault is recognized - without having to
look at the instrument - an alarm device must be
connected to the fault relay.
1 Connector for EC sensing head
9 Pin Connector (Relays)
Fault Relay
Pin
1
2
3
Mark NO
C
NC
NO
NO = Normally open, NC = Normally closed, C = Common
3.5
Electrical installation with Docking
Station
Installing this configuration is a two-step process.
First, the Docking Station is mounted and connected to the
field wires. Second, the main instrument enclosure with the
electronics and sensor is attached to the Docking Station.
The Docking Station can be pre-mounted, wired and sealed
with the supplied cover. Once the site is ready for
commissioning, the instrument is then hooked up to the
Docking Station and placed into operation; this helps prevent
damage to the instrument during the construction phase.
The connection between the Docking Station and the main
instrument is realized via a 'feed-through'. Depending on the
instrument selected, there are 2 types of feed-through.
3 wire for power (part number 4544182)
9 wire for power and relay (part number 4544169)
3.5.1
Field wiring
For field wiring of Docking Station refer to Instructions for Use
9033242.
Dräger Polytron 5100
A2 Relay
A1 Relay
4
5
6
7
8
C
NC
NO
C
3.6
Installing sensor
Loosen set-screw (2),
2mm Allen screw on
black sensor housing.
Unscrew bayonet ring
(3) and remove blank.
Remove sensor from
packaging.
Insert sensor (4) into the
opening.
The
logo on the sensor must
point to the mark on the
sensing head housing
(5).
Lock
sensor
bayonet ring.
Tighten set-screw (2).
Mandatory for Zone 22
installations.
4544911f
9
NC
Dräger
with
2
Installation
1
5
4
3
00733298.eps
4544911h
11
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