Hazardous locations are defined as those where fire or explosion hazards may exist due to the presence of flammable gases, vapours or liquids, combustible dusts, or ignitable fibres or flyings.
As per International Electrotechnical Committee Standards, the classified areas are categorized in three groups: Zone 0, Zone 1 and Zone 2.
Zone 0 is s an area where an explosive gas-air mixture is continuously present or present for long time. Therefore, devices that can be a source of ignition must be safe under fault or even normal conditions. The product being used in this area must be safe.
In order to be certified as compliant with safety Standards for Zone 0, the product must be protected by one or more of the following protection techniques: intrinsic safety with level of protection “ia”, encapsulation with “ma” protection and flameproof with “da” protection. Note that this flameproof protection applies only to portable combustible gas detectors with a catalytic sensor.
Additionally, equipment containing optical radiation such as lasers can be installed in Zone 0 if optical power is inherently safe using “op is” protection or using an interlock system complying with “op sh” protection for Zone 0.
Our Zone 0 Wiki (www.hazlocdirectory.com/zone-0) can help you find certified Zone 0 products for any of the product categories. You can also select three products and compare technical characteristics such as electrical ratings, hazLoc markings (Gas Group, Temperature code), protection techniques and rated ambient temperature, as well as other product features.
Our Hazloc Directory staff will be happy to answer questions about these listed products. Our goal is to help you finding exactly what you need quickly and easily, allowing for decisions to be made based on accurate information.
Hazloc Directory is the world's most trusted source of information about hazardous location products, manufacturers and service providers.
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