Flameproof is the word normally used by Asian & other commonwealth countries. Explosion proof is an American Word. EExd is used by all EU. There is no difference except term.
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Flameproof design is one of the explosion protection technique extensively used for light fittings, JBs, motors in hazardous areas. This is certified by IEC but is predominantly followed in India and is also governed by local IS standards.
However, hazardous area specification you have asked for the transmitter is quite common and you should get it (ex-proof) from most of the reputed manufacturers.
Flameproof vs Explosion Proof
Flameproof and explosion proof refers to enclosures that are made out of metal that are able to endure the internal forces of an explosion. The enclosures’ joints cool escaping gases so those gases will not ignite the volatile gases in a hazardous area.
Flameproof
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Flameproof enclosures are used as protection on projects with IEC standards. Each of them, one by one, is factory tested to one and a half times the maximum pressures that are released in an explosion. Flameproof enclosures are firmly fixed with special devices so that they cannot be removed without the use of some sort of a special tool, or in some cases, multiple special tools.
Explosion Proof
Explosion proof enclosures are used as a means of protection more so in the United States and Canada. Explosion proof enclosures are individually factory tested to four times the maximum pressures that are released in an explosion. As a result, explosion proof enclosures are more heavily constructed than flameproof enclosures are. It is also acceptable to drill an explosion proof enclosure in the field.
Difference between Flameproof And Explosion Proof
Flameproof enclosures and explosion proof enclosures are similar in many ways, but they are crucially different in other ways. Both flameproof and explosion proof’s covers are bolted on or they are firmly attached with threaded covers or joints. On the other hand, flameproof enclosures have special devices on them that require special tools for them to be removed. Flameproof enclosures cannot be drilled out in the field. They have to be drilled in the factory while explosion proof enclosures can be drilled in the field, which makes them easier to use by OEMs.
Flameproof enclosures and Explosion proof enclosures each have their own advantages and disadvantages. It’s all up to the user whether they like one over the other and it all depends on what job they need the enclosure for.
In brief:
• Flameproof enclosures are factory tested to one and a half times the maximum pressures that are released in an explosion while explosion proof enclosures are factory tested to four times the maximum pressures that are released in an explosion.
• Flameproof enclosures cannot be drilled out in the field and must be drilled by the manufacturer while explosion proof enclosures can be drilled out in the field which makes them easier to use by OEMs.
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