Installing The Transmitters In Non-Explosion-Hazard Areas; Installing The Measuring Unit Dräger Polytron 3000 - Dräger Polytron 3000 Instructions For Use Manual

Installing the transmitter

Installing the transmitters in non-explosion-hazard areas

Caution:
The explosion-protection markings has to be removed from the transmitter. Once the transmitter has been used after
installation in this manner, it may never be installed in explosion-hazard areas.
Ex-hazard area, zone 2 or non explosion-hazard area
+24 V
4 to 20 mA
Installing the measuring unit Dräger Polytron 3000
●
Remove the rain cover from the previously installed docking station.
●
Examine seal for signs of dirt and clean if necessary.
1 Check position of eccentric catches and correct if necessary.
The eccentric opening must point upwards, engaged position.
Attention:
Use only a 5 mm Allen key without a ball head.
●
Check the polarity (marking in the docking station) and cable routing and check
that the connector is securely seated; rectify as necessary (see the installation
notes for the Polytron docking station).
●
Unpack the measuring unit Dräger Polytron 3000.
2 Insert the measuring unit about halfway up the docking station and slide it in as
far as it will go.
3 Lower the unit along the front edge of the docking station. About 5 mm before its
hits the stop, the resistance will increase as the connector engages with the sock-
et on the printed circuit board.
Note!
Check that the terminals in the docking station are correctly aligned if the
connector does not engage correctly!
Note:
Ensure that the front bottom of the measuring unit is flush with the bottom
of the Docking Station. Apply pressure to the measuring unit until it
"clicks" into place. If the fronts are not flush, the measuring unit is not
completely sealed and could get water inside the transmitter!
1 Turn the eccentric catches clockwise with an Allen key to lock the measuring unit
⇒
( = approx. 180
10
o
).
Non-explosion-hazard area
2
+
4 ... 20 mA
+
–
0 V
Control unit
1
3