36
Technical Manual
|
Dräger Polytron
®
8000 Series
Remote sensors
NOTICE
Bridges are necessary for 3-core field wiring
►
Install bridges at terminals 1a/1b and 3a/3b
6.3.1 Installation
The sensor must be removed from the transmitter and inserted into the Junction
Box Ex d.
NOTICE
Sensor damage
Polytron
®
87x0 IR must not be operated with 3-core field wiring.
►
Operate Polytron
®
87x0 IR only with 5-core field wiring.
Refer to the corresponding figures
– 3-core field wiring (see "Junction Box Ex d 3-core field wiring installation",
page 38)
– 5-core field wiring and PIR 7x00 installations (see "Junction Box Ex d 5-core
field wiring installation", page 39)
The junction box can be mounted for measuring gases in ambient air or inside of a
duct/pipe.
1. Use M6 (1/4’’) bolts with hex socket caps to mount the enclosure to one of the
following options.
For PIR 7x00 sensors:
●
Mount the housing of the Junction Box Ex d on the mounting spacer
(Fig. D)
.
2. Ground the housing using the grounding screw. (
Fig. A1
).
3. Unscrew the lid.
4. Screw in the sensor (at least 5 rotations and 266 LB IN. / 30 Nm).
5. Observe the preferred position of the sensor (
Fig. A2)
.
For PIR 7x00 sensors (
Fig. A2a
):
●
The "Dräger" lettering on the splash guard must read horizontally.
A deviation from the horizontal of ±30° maximum is permissible.
6. Connect the sensor plug to the socket of the cable harness (
Y
) (
Fig. B1
).
●
In case of DD/DQ CatEx sensors, twist the sensor cables with 7 rotations
(
Fig. B2
).
7. Feed the field wiring through the cable entry and connect it to terminal (
Y
).
Option
Accessory
Mounting on a flat surface
Drilling template: 4544299
Additionally for Polytron
®
87x0 IR:
Spacer 6812617
Mounting on a pole
Pole mount kit: 4544198
Mounting on a duct/pipe
Duct mount kit: 6812725
For Polytron
®
87x0 IR::
6812300
