tel: +353-21-4313331 .....  Everything to: Sense, Measure, Connect, Communicate, Control and Automate !

     PROCESS CONTROL ---- FACTORY AUTOMATION ---- EXPLOSION PROTECTION ---- MACHINE SAFETY
Home Up Ex-equipment Bus Systems Machine Safety Control Panels Vision Sensors Level Sensors Flow Sensors RFID Ident System Photoelectric Sensors Inductive Sensors Ultrasonic Sensors Capacitive Sensors Wireless Control Multicolour Indicators Multifunction Indicators Audible Indicators Calibration Contact Us About... News Quality

 

Up
Zones
Gas Groups
Temperature Classes
Types of Protection
What to Use Where
Atex Directive
Atex Grouping
Atex Approval
Notified Bodies
Atex Marking
Atex Label

 

 

 

 


Hazardous Area Zones  -  Risk Frequency

A hazardous area is any area where an explosive atmosphere may occur at any time.
Such locations are divided according to the likelihood of an explosive atmosphere as follows:
 


Zone 0 is an area where an explosive atmosphere is present continuously or for long periods.

Zone 1 is an area where an explosive atmosphere is likely to exist in normal circumstances.

Zone 2 is an area where an explosive atmosphere is not likely in normal operation, & if it occurs, it will only exist for a short time.

 

 

The requirements for an explosion are:

• A Flammable Vapour

• Availability of Oxygen

• A source of ignition

 








 

This illustrates a typical example of how Hazardous Areas are classified.