Is it true that all explosion-proof instruments are waterproof?
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This post was last edited by zxb1990 on 2017-7-29 20:58. As the title suggests, let’s discuss it together
Flameproof instruments, with a water resistance level of at least IP65
The explosion protection rating and the protection level are not the same thing; the protection level for installations indoors is not necessarily high.
The explosion-proof certification evaluates the size of the gaps in the instrument’s enclosure; it determines to what extent the release of energy outside the enclosure is restricted in the event of an explosion inside. This certification does not assess the enclosure’s dustproof and waterproof properties. . . There are many commercially available flameproof junction boxes that do not come with sealing rings.
The explosion protection rating and the water resistance rating are not based on the same standard, so this statement is incorrect
Conversely, if that’s the case, shouldn’t GB 4208-2008 regarding the degree of protection for enclosures (IP code) and GB 12476 be merged into one standard?
A thick steel plate does not necessarily ensure water resistance; water resistance depends on the sealing, while explosion protection depends on the structure, and such a structure may not be able to provide proper sealing.
Interesting. Regarding explosion protection and water resistance, I previously asked within the forum about whether wristbands with water resistance (including IP65 rating) can be worn in chemical workshops. I consulted a safety engineer, who gave a simple example: the LEL monitoring points inside a facility are all explosion-proof, but those installed outdoors need to have a waterproof canopy, as they are not explosion-proof. As for the thickness of the steel plates mentioned in terms of explosion resistance, I personally think it’s not something that should be discussed here; that applies to bulletproof cars. The explosion protection of instruments relies primarily on various isolation methods to separate the weak energy sources that may be generated during instrument operation from the explosion-proof area.