Use And Inspection; Device Category And Suitability; Iecex Certificate Of Conformity; Special Conditions ("X" Symbol) - Balluff BTL7-A/C/E/G5 Serie Manual Del Usuario

BTL7-A/C/E/G5_ _-M_ _ _ _-B/Z-DEX_-K_ _/KA_ _
Micropulse Transducer - Rod Style
2
ATEX safety notes (continued)
The applicable safety regulations and standard
requirements must be observed during selection, set-up,
and operation, such as:
– Requirements for occupational safety
– Requirements for explosion protection
– Electrical installations erection in explosive
atmospheres (DIN EN 60079-14)
– Ignition protection "d", flameproof enclosure
– Special requirements for equipment in device group II,
category 1G
– Special conditions for safe operation (X)
More detailed information on the guidelines,
approvals, and standards is included in the
declaration of conformity.
2.4

Use and inspection

2.4.1

Device category and suitability

The transducer has been classified as electrical equipment
in device group II, i.e. it is suitable for all explosive areas,
with the exception of fire damp-prone mines. It may be
used in gas and dust explosive areas in accordance with
the following descriptions.
Gas explosion protection
Device category II 1/2 G covers devices that have been
designed to ensure the required amount of safety, even in
case of frequent device malfunctions or error states which
are generally to be expected. Devices in this category can
be used in zone 0 (measuring range) or 1 (electronics
head). Zone 0 refers to an area in which a hazardous
explosive atmosphere made of a mixture of air and
flammable gases, vapors, or mists is constantly or
frequently present. Zone 1 is an area in which a hazardous
explosive atmosphere made of a mixture of air and
flammable gases or vapors is occasionally present during
normal operation. The operator is responsible for proper
separation of zones.
Ignition protection d ensures that the housing withstands
the pressure of an explosion in the interior thanks to a
flameproof enclosure and does not allow the explosion to
be transferred to the explosive atmosphere outside of the
housing.
Gas group IIC indicates that the transducer can be used in
all gases in compliance with the temperature class.
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Ignition protection "d"
Flameproof enclosure
Temperature class T6/T5 at an ambient temperature of
65°C/80°C indicates that the outer surface temperature of
the transducer is below 85°C, even if the permissible
operating conditions are unfavorable. As a result, an
explosive gas atmosphere with an ignition temperature of
over 85°C cannot be ignited.
Ga/Gb indicates the protection level (EPL) for device
category 1/2 G.
Dust explosion protection
Device category II 2 D covers devices that have been
designed to ensure a high level of safety during normal
operation within the operational parameters stated by the
manufacturer. Devices in this category may be used in
zone 21 in which an explosive atmosphere caused by
dust/air mixtures may occasionally occur.
The ignition protection type tb indicates that the electrical
equipment is protected against dust entry by the housing
and features a method of limiting the surface temperature
(T85°C).
Dust group IIIC covers possible use in all areas with an
explosive dust atmosphere, both with conductive and
non-conductive dusts and flammable fibers.
Db indicates the protection level (EPL) for device category
2 D.
2.4.2

IECEx certificate of conformity

The transducers have been certified by Bureau Veritas
under certificate number IECEx EPS 13.0024X. The
current issue of the certificate and further information can
be found in the "Certified Equipment Scheme" section at
www.iecex.com.
The certificate number is indicated on the part label.
2.4.3

Special conditions ("X" symbol)

The "X" symbol indicates special conditions that must be
noted for safe operation:
– The permissible ambient temperature is limited to
-40°C to +80°C.
– Cable and line inlets were tested with reduced tensile
force in accordance with EN 60079-0. This is why the
connection cable must be routed in a permanent
location and protected against tension and rotary loads
using an additional clamp. Drag chains may not be
used.
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