Explosion Protection Marking For Devices With One Type Of Protection; Explosion Protection Marking For Devices With A Combination Of Explosion Protection Types - ABB TTF300 Operating Instruction

TTF300 FIELD-MOUNT TEMPERATURE TRANSMITTER | OI/TTF300-EN REV. G
Figure 14: PROFIBUS PA® name plate (example)
Figure 15: FOUNDATION Fieldbus® name plate (example)
Explosion protection marking for devices with one type
of protection
Devices with an explosion-proof design are marked with the
following additional plates.
Note
• Further information on the approval of devices for use in
potentially explosive atmospheres can be found in the
explosion protection test certificates (at
www.abb.com/temperature).
• Depending on the design, a specific marking in accordance
with ATEX or IECEx applies.
1 Type designation in accordance
with approval
2 Approval number
3 Protection class of the explosion-
proof design (explosion
protection marking)
4 Type designation
Figure 16: Additional plate for explosion-protected apparatus (example)
5 Temperature class of the
explosion-proof design
6 CE mark (EU conformity) and
notified body for quality
assurance
7 Ex marking
Explosion protection marking for devices with a
combination of explosion protection types
Coding of the type of protection of the device in accordance
with order information can also refer to a combination of
different explosion approvals for various types of protection.
The 'intrinsic safety', 'flameproof (enclosure)' and 'dust
explosion protection' types of protection can be combined with
each other.
The following example shows the explosion protection marking
for the combination of the 'intrinsic safety' and 'flameproof
(enclosure)' types of protection:
1 Checkboxes for marking type of protection
Figure 17: Combination of 'Intrinsic safety' and 'Flameproof (enclosure)' types of
protection, coding of type of protection: E4.
Measures required before the use of devices with combined
types of protection
NOTICE
Note for temperature transmitters with combined approval
Before the transmitter is installed, the selected type of
protection must be indelibly marked on the explosion
protection certification plate.
The transmitter can then only be operated with this degree of
protection throughout its entire service life.
• If two protection types are indelibly marked on the
explosion protection certification plate, the transmitter
must not be used in areas categorized as hazardous.
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