Buhler 222. Serie ATEX Bedienungsanleitung Seite 86

Details:
A) Blowback
Ordering note for capacitive vessel:
For attachment to GAS 222.11 / 30 / 35-U, a support is required.
Ordering note for pneumatic actuator:
If a blowback controller is required, only actuator P/N 46222030 is possible.
We advise the installation of a position indicator switch to control the pneumatic actuator.
Integrated blowback controller in the probe controller
In addition to the stand-alone blowback controller (RRS), an integrated blowback controller is optionally
available
Blowback cycle time and actual blowback time can be adjusted via the keys and menu of the controller.
The blowback and manual operation will be shown on the display. The blowback controller can be
programmed via the keys – manual or automatic operation is possible. Besides the status output of the
controller, a blowback status signal is provided. Blowback will be usually initiated by signals coming from
the main controls.
If the position indicator switch is installed, the controller will use this input for the process logic.
B) Hazardous Areas
Please note that installed accessories may change the approved category of the probe.
Follow strictly the advices given in the installation- and operation manual and regard the marking on
the type plate.
Model
21 Atex, 31 Atex,
35 Atex
21 Atex, 31 Atex,
20 Atex , 21 Atex,
20 Atex, 21 Atex,
20 Atex, 21 Atex,
21 Atex, 31 Atex,
* Accessory not suitable for sampling dust with extremely low ignition energy < 3mJ.
** When gases are sampled from Zone 2, ceramic sample tube must be used only if application related or process
related electrostatic charging is eliminated.
DA 461099
08/2007
Page 6/8
Sample Gas Probe GAS 222.xx Atex
with Accessories
Pressure vessel PAV 01
(Part-No. 46222PAV with accessories)
In situ filter*, ceramics
(Art.-Nr.:46222307 + 46222307F)
Downstream filter*, ceramic
(Part-No. 46222026 + 46222026P)
Sample tube
(Part-No. 46222001, 462220011, 46222006,
46222004, 46222016)
Sample tube**, ceramics
(Part-No. 4622200205, 4622200210,
4622200215)
Pneumatic cylinder with end switch Atex
(Part-No. 46222019)
resuting restircted
area;
marking
II 1D / 2GD
II 1D 3G / 2GD
II 1D 3G / 2GD
II 1G / 2GD
II 3G / 2GD
II 1GD / 2G3D