Standard for Portable Electronic Products Suitable for Use in Class I and II, Division 2, Class I Zone 2 and Class III, Division 1 and 2 Hazardous (Classified) Locations
standard by The International Society of Automation, 07/12/2011

Wireless systems for industrial automation: Process control and related applications
standard by The International Society of Automation, 01/01/2009

Electrical Apparatus for Use in Class I, Zone 2 Hazardous (Classified) Locations – Type of Protection "n"
standard by The International Society of Automation, 05/05/2003

Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations
standard by The International Society of Automation, 2015

Area Classification in Hazardous, Classified, Dust Locations : 12.10
standard by The International Society of Automation, 04/01/1988

Pressurized Enclosures
standard by The International Society of Automation, 07/25/2012

Explosive atmospheres – Part 2: Equipment protection by pressurized enclosures "p" (IEC 60079-2 Mod)
standard by The International Society of Automation, 01/01/2010

Recommendations for the Preparation, Content, and Organization of Intrinsic Safety Control Drawings
standard by The International Society of Automation, 09/08/2014

Definitions and Information Pertaining to Electrical Equipment in Hazardous (Classified) Locations
standard by The International Society of Automation, 05/29/2013

Annunciator Sequences & Specifications
standard by The International Society of Automation, 04/01/1979