Printers for bar code and batch number labels are found in many industrial locations. If the printer is to be located in a hazardous area, then a certified solution is required to ensure safe operation.
Due to operational requirements & constraints, many of the possible Ex protection concepts are not suitable. Ex p (Purge & Pressurization) provides the most flexible and cost-effective solution.
The printer is installed inside a custom designed Ex p stainless steel enclosure fitted with a certified purge and pressurization system. The enclosure design incorporates two unique features:
The enclosure dimensions are tailor-made for the printer to be used, which sits on an adjustable internal shelf allowing accurate alignment for the label feed and pushbuttons. Additionally, an access door is provided for media roll change.
The enclosure can be supplied on a plinth or for table-top use.
For Zone 1 / Class 1 Div 1 applications, in addition to the use of an X purge, a mini purge interface unit (MIU) may be required to provide local isolation of both the power supply to the printer as well as the incoming ethernet cable.