Explosion-proof diaphragm motor pumps ATEX
In plants in hazardous areas, high-pressure pumps must comply with the ATEX directives.
What is ATEX?
ATEX is an abbreviation for ATmosphères EXplosibles. Explosion protection requirements have been modified within the EC. From 1 July 2003, the European Directive 94/9 /EC on explosion protection is in force. The update of the requirements mainly consists in the fact that now not only electrical components, but the entire pumping unit as a whole are subject to inspection and certification of explosion protection.
For instance -EEx de IIB T4
- EEx is a general abbreviation for ATEX
- de- abbreviation for the type of protection
- d - explosion protection using a flameproof enclosure
- o - explosion protection with oil-filled flameproof enclosure
- p - explosion protection with filling the flameproof enclosure with gas under excess pressure
- q - explosion protection with filling the flameproof enclosure with quartz sand
- e - explosion protection of increased reliability
- i - explosion protection type "intrinsically safe electrical circuit"
- II- abbreviation for the group electr. equipment
- I - gas safe
- II - explosion-proof
- B- classes of group II
- A - B - C - different sizes of limiting air gap, minimum ignition current
- T4- heat resistance class
- T1< 450 °С
- T2< 300 °С
- T3< 200 °С
- T4< 135 °С
- T5< 100 °С
- T6< 85 °С
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