Mounting The Transmitter; Installing Electrical Connections; Connection Between Transmitter And Controller Unit - Dräger PEX 3000 Gebrauchsanweisung

Mounting the transmitter

 By means of fours screws (diameter 4 mm) through the holes of the housing
(drilling template see page 57).

Installing Electrical Connections

Electrical wiring is only to be laid and connected by an expert paying attention to
the pertinent regulations and laws concerning electrical equipment in potentially
explosive atmospheres as well as the approval conditions.

Connection between transmitter and controller unit

 The maximum cable length for loads of 250 Ohms can be extracted from the
following table:
minimum supply
voltage at
controller side
18 V
20 V
22 V
24 V
26 V
28 V
 By means of 3-core screened cable, (braided screen, cover ≥80 %), outer
diameter min. 7 mm, max. 12 mm. Connect Shielding as short as possible to
earth clamp of the controller unit.
 By means of the connecting cone within the cable gland the cable-screen has to
be contacted to the internal conductive surface of the enclosure as shown. With
this the required RF-immunity according to EN 50 270 is ensured.
approx. 55 mm
The cable gland is explicitly approved for fixed installations and outer cable
diameters between 7 and 12 mm.
CAUTION
2
0.5 mm
(36 Ohms/km) (24 Ohms/km)
416 m
555 m
694 m
833 m
972 m
1110 m
NOTICE
core cross-section
2
0.75 mm 1.0 mm
(18 Ohms/km)
625 m
833 m 1110 m
1041 m 1388 m
1249 m 1666 m
1457 m 1943 m
1666 m 2221 m
Installing Transmitter
2
1.5 mm
(12 Ohms/km)
833 m 1249 m
1666 m
2082 m
2498 m
2915 m
3331 m
approx. 12 mm
2
35