Explosion Proof Immersion Heaters
For hazardous areas, Sinus Jevi has developed explosion proof Ex ’de’ heating equipment, designed and manufactured in
accordance with EN-IEC 60079-0, EN-IEC 60079-1, EN
60079-7 and EN-IEC 60079-31 certified by the independent testing institute ISSeP. The certificates cover zone 1 and zone 2 for hazardous areas.
Gas groups II A, II B and II C and temperature classes T6-T1. Dust group Ex tb IIIC zone 21.
The flame-proof (d) enclosures have been designed for hazardous areas to protect the environment against gas-explosions, caused by sparking by electrical connections of the heating
elements and control devices. Several types of immersion heaters, flanged or screwed, have been described on the next pages.
The screwed types for dimensions up to 3”.
The terminal enclosures have a IP66 degree of protection.
All heaters are standard internal wired on terminals.
If cable entry exceeds 70°C, high temperature cables must be used. The required minimum distance between enclosure and connection flange, to ensure the temperature limit in the
enclosure, is listed in the following table as a function of
temperature classes (page 5).
The robust flame proof Ex d IIC enclosure IP66 is made of
steel or stainless steel.
With earth, screwed terminal cover and finished in epoxy paint.
Enclosure with a maximum of 3 cable entries (M20 x 1.5).
Marking ATEX Ex II 2 G D
Ex d IIC T6-T1 Gb EN/IEC 60079-1
Ex tb IIIC T110°C Db EN/IEC 60079-31