Digi Connect Sensor+ User Manual page 128

Regulatory information
Mark
II 3 G Ex nA IIC T6 Gc
Digi Connect Sensor+ User Guide
Description
ATEX symbol and classification:
— The ATEX symbol. This symbol indicates certification
n
for use in an explosive atmosphere. The symbols that
follow it provide the details of that certified use.
II — This indicates Group II (Clause 4.2). The equipment is
n
intended for use in places with an explosive gas
atmosphere other than mines susceptible to firedamp.
3 — This indicates Equipment category 3. Category 3
n
comprises products designed to be capable of keeping
within its operational parameters, stated by the
manufacturer, and based upon a normal level of protection
for its intended use, considering areas in which explosive
atmospheres caused by mixtures of air and gases, vapors,
mists or air/dust mixtures are unlikely to occur and if they
do occur, do so infrequently and for a short period of time
only.
G — This indicates that the Environment is based on
n
International Electrotechnical Commission (IEC) 60079-0,
Clause 29.4.
Ex — This indicates that the product has been evaluated
n
for use in potentially explosive atmospheres.
nA — This indicates that the product provides ignition
n
protection by using components that are non-sparking
during normal operations.
IIC — The Group symbol where IIC is electrical equipment
n
for places with an explosive gas atmosphere other than
mines susceptible to firedamp.
T6 — This is the Temp Code, indicating a maximum surface
n
temperature of 85° C.
Gc — This indicates the Equipment Protection Level. Gc
n
means equipment for explosive gas atmospheres, having
an "enhanced" level of protection, which is not a source of
ignition in normal operation and which may have some
additional protection to ensure that it remains inactive as
an ignition source in the case of regular expected
occurrences (for example, failure of a lamp).
ATEX marking
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