Stainless Steel
Apparatus which do not create arcing or sparking or exceed maximum permissible surface temperatures during normal operating conditions can be used in accordance with the European standard EN 60079-7 –“Ex-e” in hazardous areas of Zone 1, 2, 21 and 22. The enclosures consist of impact-resistant thermoplastic, glass-fibre-reinforced polyester or stainless steel.