12
NOTE
The following sensors (or sensors that are not isolated) are considered not isolated or earthed in
accordance with IEC/EN 60079-11:
#
Ø 3 mm; more than 4 internal conductors
#
Ø < 3 mm
#
Ø 3 mm; more than 6 internal conductors
For technical safety reasons these sensors must be connected to the equipotential bonding of the system
throughout the complete length of the intrinsically safe electrical circuit. The special conditions in
accordance with IEC / EN 60079-14 must be observed.
All Reckmann sensors must be used only in accordance with their intended use and must not be
exposed to environmental or process conditions that could affect their "outer case".
For the operation of the temperature sensors with specific customer-approved
Ex i transducers and/or Ex i digital displays, the confirmation of intrinsic safety is required. The Ex i
confirmation and operating instructions of the additional components are part of the Ex
documentation in this case.
If fittings from sources other than the manufacturer are used as wiring and cable entries, they
must have an approval as per IECEx and/or ATEX and must guarantee as a minimum protection
class IP65.
The specific requirements of IEC/EN60079-14 and IEC/EN 60079-25 must be observed for
installation of our sensors.
Metallic materials of the ex-sensors must not exceed the following mass percentages acc. to IEC /
EN 60079-0:
For group II:
for EPL Ga 10% aggregate aluminium, magnesium, titanium, zirconium and
7.5% aggregate magnesium, titanium, zirconium;
for EPL Gb 7.5% aggregate magnesium, titanium, zirconium;
for EPL Gc no requirements concerning temperature sensors.
For group III:
for EPL Da and Db 7.5% aggregate magnesium, titanium, zirconium;
for EPL Dc no requirements concerning temperature sensors.
Summary of Contents for R14 Series
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