Ex Print - hazardous area label printer

Overview

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 requirement & constraints, many of the possible Ex protection concepts for hazardous areas are not suitable. 

Ex p (Purge & Pressurization) provides the most flexible and cost-effective solution. 

Expo has worked with Zebra Technologies, a leading manufacturer of industrial label printers, to develop a certified solution based around their popular ZT111 4” thermal transfer label printer.

Expo’s certified solution

The printer is installed inside a robust stainless steel enclosure. The system is fitted with a purge system to control and monitor the purge & pressurization process and, for Zone 1 & 21 duty, an isolation unit to provide power and ethernet control.  
Expo’s design incorporates the following key features:

• Through-the-enclosure-wall pushbuttons to actuate the printer membrane switches for label feed control
• A clear window to view the printer status LEDs
• A low-leakage label slot to permit label exit, while maintaining positive pressure inside the enclosure.
• A side access door with window for monitoring and changing the print media roll.