Directive
The different parts of the nomenclature are explained below:
Informs that the product complies with the European Directive.
Informs witch official Notified Body did the testing and certification of the product.
The explosion proof Ex tag is required for certified equipment in accordance with the ATEX directive.
The tag for equipment group relates to groups in the Zone system where
The tag for category relates to the Zone in the Zone system where
Types of certificate indicates standards used for the certification.
Types of protection indicates the level of protection concepts the equipment is designed for. The protection concepts are divided in to sub classes.
Protection applied by encasing the components in a resin type material.
The protection is referred to as "Ex m".
Sub divisions ma for Zone 0 and mb for Zone 1.
The enclosure can withstand the pressure developed during an internal explosion of an explosive mixture. The explosion is not transmitted to the explosive surrounding atmosphere and the enclosure operates with a temperature to low for the surrounding explosive gas or vapor to ignite.
This protection is referred to as "Ex d".
Electrical equipment is under normal or abnormal conditions incapable of releasing sufficient electrical or thermal energy to cause a ignition of the hazardous surrounding atmospheric mixture.
This protection is referred to as "Ex i".
Sub divisions ia for Zone 0, ib for Zone 1 and ic for Zone 2.
High quality and very robust components. Various measures are applied to reduce the probability of excessive temperatures and the occurrence of arcs or sparks in the interior and on the external parts of the equipment. Increased safety may be used with flame-proof type of protection.
The protection is referred to as "Ex e".
Protection applied by submerging the components in oil.
The protection is referred to as "Ex o".
Protection applied by keeping a positive pressure in the enclosure relative to the surrounding atmosphere with air or an inert gas. With an overpressure monitored, maintained and controlled - the surrounding ignitable atmosphere can not come in contact with energized parts of the apparatus.
The protection is referred to as "Ex p".
Sub divisions px or py for Zone 1 and pz for Zone 2.
Protection applied by covering the components with sand, powder or quartz.
The protection is referred to as "Ex q".
A protection applied to electrical equipment in such a way that normal operation is not capable of igniting surrounding explosive atmospheres.
The protection is referred to as "Ex n".
Any method which can be shown to have the required degree of safety.
The protection is referred to as "Ex s".
The tag for equipment group relates to groups in the Zone system where
Hazardous area equipment is classified according to maximum surface temperature produced under fault conditions at ambient temperature 40 oC (104 oF), or as otherwise specified.
Temperature Code | oF | oC | Typical Substances |
---|---|---|---|
T1 | 842 | 450 | Hydrogen, Toluene, Ethyl acetate |
T2 | 572 | 300 | |
T3 | 392 | 200 | Petrol, Gasoline, Diesel |
T4 | 275 | 135 | |
T5 | 212 | 100 | |
T6 | 185 | 85 |
Risk, reliability and safety in process control systems.
Verifies that a product is designed to the appropriate standards according the European Machine Directive.
The National Fire Protection Association (NFPA) hazard system for chemical materials.
Critical temperatures and concentration parameters for substances like coal, zinc, uranium and more.
The flash point of a chemical indicates how easy it may ignite and burn.
European hazardous area classification with zones, protection types, temperature codes and codes.
North American hazardous locations classification with classes, divisions and groups
Dust-ignition proof, explosion proof, instrinsically safe and nonincendive protection of hazardous areas.
IP - Ingress Protection rating is used to specify the environmental protection - or electrical enclosure - of electrical equipment.
American National Standards Institutes schedule for safety colors marking physical hazards.
Maximum fire sprinkler protected area vs. classification and construction.
Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!
We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.
Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.
Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.
AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.
If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. You can target the Engineering ToolBox by using AdWords Managed Placements.