ABB JDF300 Operating Instruction page 47

J D F 3 0 0 | F I E L D I N D I C ATO R | O I/ J D F 3 0 0 - E N R E V. B
b) II 2 G Ex db IIC T6 Gb Ta=–50 °C to +75 °C,
II 2 D Ex tb IIIC T85 °C Db Ta = –50 °C to +75 °C;
IP66, IP67.
FM Approvals certificate number FM 18 ATEX 0054X.
The meaning of ATEX code is as follows:
• II: Group for surface areas (not mines)
• 2: Category
• G: Gas (dangerous media)
• D: Dust (dangerous media)
Application for field indicator Ex db categories Gb and Db
Application with Gas
Zone "1"
Zone "0"
JDF300
Category 2 G Ex db
The other marking refers to the protection type used according
to relevant EN Standards and is valid also for IECEx as detailed
in FM Approvals certificate number IECEx FME 18.0004X:
• Ex db: Explosion proof
• IIC: Gas group
• T6: Temperature class of the field indicator (corresponding to
85°C max) with a Ta from -50°C to +75°C.
• Gb: Equipment Protection Level
• Ex tb: type of protection "tb" means protection by enclosure
technique
• IIIC: for Dust application
• Db: Equipment Protection Level
About the applications, this field indicator can be used in Zone
"1" (Gas) classified areas (continuous hazard)
About Dust application, JDF300 is suitable for "Zone 21"
according to the EN 60079-1 as it is shown on the relevant
part of the sketches.
IMPORTANT
IP code
About the degree of protection provided by the enclosure of
the field indicator has been certified IP66, IP67 according to
EN 60529 standard. The first characteristic numeral indicates
the protection of the inside electronics against ingress of
solid foreign objects including dusts.
The assigned "6" means an enclosure dust-tight (no ingress
of dust).
The second characteristic numeral indicates the protection
of the inside electronics against ingress of water.
The assigned "6" refers to degrees of protection against
water. Equipment is protected against powerful water jets.
The assigned "7"means an enclosure water-protected against
a temporary immersion in water under standardized
conditions of pressure and time.
Application with Dust
Zone "21"
Zone "20"
JDF300
Category 2 D Ex db
47