Safety Information; Safety Warnings - Crowcon IR Display Instructions D'installation, D'utilisation Et De Maintenance

Safety warnings

The IR Display is an intrinsically safe (IS) display accessory for the IRmax IR hydrocarbon
gas detector. The IR Display may be supplied in three formats: a Fixed IR Display is
assembled into a stainless steel housing which connects directly to the IRmax and contains
the necessary IS barrier circuits. The Remote and Hand-Held versions of the IR Display
must be connected only to IRmax detectors fitted with an IS Barrier Module which contains
the necessary IS barrier circuits.
The IR Display must only be connected to IRmax fitted with the appropriate label, shown
in Diagram 1 below.
WARNING
• An IR Display may only be fitted to an IRmax supplied for the purpose. Such
IRmax are certified Exd ia, and must be operated either with a Fixed IR Display
containing an IS barrier, or with a Remote IR Display or IS Hand-Held Calibrator
connected via a Crowcon IS Barrier Module.
• An IRmax supplied without a display is certified Exd IIC and cannot be retro-
fitted for use with an IR Display.
Diagram 1 Certification label fitted to IRmax compatible with the IR Display

Safety Information

1