ATEX (Zone 1 and 21 purging system
installation)
GasEye Cross Duct
Operating instructions, 05/2021
225
System pressurization failure alarm
If pressurization failure of the enclosures occurs, power to the GasEye is cut-off by
the 6500 purging controller. At the same time, auxiliary contacts of 6500 controller
(AUX) are switched on when pressurization is too low. Those contacts can be used
to generate additional alarms signals or switching. To use it properly, additional M12,
stainless-steel gland must be installed near the AUX contacts:
Figure 219. Alarm terminals for pressurization failure.
When alarm occurs, AUX contacts are energized and switched other way than visible
on the picture above (white schematic lines on PCB).
Airoptic Sp. z o.o. supplies purging system controller without any connection to the
auxiliary contacts nor dedicated gland installed.
