Electrical Apparatus for Use in Zone 20, Zone 21 and Zone 22 Hazardous (Classified) Locations - General Requirementsstandard by The International Society

Graphic Symbols for Distributed Control-Shared Display Instrumentation, Logic & Computer Systemsstandard by The International Society of Automation, 04/01/1983

Requirements for Process Sealing Between Electrical Systems and Flammable or Combustible Process Fluidsstandard by The International Society of Automation, 01/01/2011

Performance Requirements for Ammonia Detection Instruments (25-500 ppm)standard by The International Society of Automation, 04/01/1998

Electrical Apparatus for Use in Zone 21 and Zone 22 Hazardous (Classified) Locations - Protection by Enclosures "tD"standard by The International Society

Face-to-Face Dimensions for Flanged Globe-Style Control Valve Bodies (ANSI Classes 900, 1500, and 2500)standard by The International Society of Automation, 11/19/2002

The Control Valve as the Safety Interlock Valvestandard by The International Society of Automation, 01/01/1997

Method of Evaluating the Performance of Positioners with Analog Input Signals and Pneumatic Outputstandard by The International Society of Automation, 12/02/2013

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

Functional Safety - Safety Instrumented Systems for the Process Industry Sector - Part 1: Framework, definitions, system, hardware and application programming requirements

Terminology, Dimensions & Safety Practices for Indicating Variable Area Meters : Rotameters, Glass Tube, Metal Tube, Extension Type Glass Tube - ISA

Electrical Apparatus for Use in Class I, Zone 1 Hazardous (Classified) Locations: Type of Protection - Flameproof 'd'standard by The International Society