Moxa ANT-WSB-ANM-05 Manuel D’Utilisation
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Understanding Industrial WLAN – IEEE 802.11
ATEX/Class I Division 2
ATEX is the term used when referring to the European Unions (EU) Directive 94/9/EC. ATEX governs
the regulations on the equipment used in potentially explosive atmospheres. All equipment meeting the
requirements are free to circulate within EU boarders. The directive applies to all equipment or protective
systems used in areas subject to explosion risks, gas vapors, mist, or dust. The directive also sets the
standards for safety devices, control equipment, and calibration equipment.
the regulations on the equipment used in potentially explosive atmospheres. All equipment meeting the
requirements are free to circulate within EU boarders. The directive applies to all equipment or protective
systems used in areas subject to explosion risks, gas vapors, mist, or dust. The directive also sets the
standards for safety devices, control equipment, and calibration equipment.
About ATEX/Class I Division 2
Class I Division 2/Zone 2
Class I Locations:
These locations are defined as places where the air may contain flammable gases or vapors in sufficient
quantities to cause explosive or ignitable mixtures.
Class I Locations:
These locations are defined as places where the air may contain flammable gases or vapors in sufficient
quantities to cause explosive or ignitable mixtures.
Division 2:
The division defines the conditions under which the hazard exists. Division 2 refers to the following
conditions:
• Liquids and gases in closed containers or systems are handled, processed, or used.
• Concentrations are normally prevented by positive mechanical ventilation.
• The specified area is adjacent to a Class I, Division 1 location.
The division defines the conditions under which the hazard exists. Division 2 refers to the following
conditions:
• Liquids and gases in closed containers or systems are handled, processed, or used.
• Concentrations are normally prevented by positive mechanical ventilation.
• The specified area is adjacent to a Class I, Division 1 location.
Zone 2:
This is defined as an environment where an explosive gas atmosphere is not likely to occur during normal
operation, but could occasionally arise for brief periods of time.
This is defined as an environment where an explosive gas atmosphere is not likely to occur during normal
operation, but could occasionally arise for brief periods of time.
ATEX/Class I Division 2 in Oil & Gas Industry
Safety is of the utmost importance and cannot be negotiated in dangerous industrial environments. In
particular, oil and gas exploration sites, as well as energy field development, production, and transportation
facilities face a real risk of explosions. Therefore, engineers must ensure prior to installation that all the
equipment and protection systems have to meet or exceed regulatory standards used under hazardous
conditions.
particular, oil and gas exploration sites, as well as energy field development, production, and transportation
facilities face a real risk of explosions. Therefore, engineers must ensure prior to installation that all the
equipment and protection systems have to meet or exceed regulatory standards used under hazardous
conditions.
Moxa Offers Specifically Designed for Hazardous Sites
Designed with the highest safety standards in mind, Moxa’s AWK series of WLAN solutions are constructed
in strict accordance with global acceptance for explosion protection in hazardous locations. Product
offerings include rugged AWK-3121 and AWK-4121. With ATEX/Class 1 Division 2, and UL C1D2
certifications, these stringently proven WLAN products help build safe and reliable networks in the oil and
gas industry.
in strict accordance with global acceptance for explosion protection in hazardous locations. Product
offerings include rugged AWK-3121 and AWK-4121. With ATEX/Class 1 Division 2, and UL C1D2
certifications, these stringently proven WLAN products help build safe and reliable networks in the oil and
gas industry.