SARA-G3 series - System Integration Manual
UBX-13000995 - R06
Objective Specification
Design-in
Page 161 of 218
2.13
SARA-G350 ATEX integration in explosive atmospheres applications
2.13.1
General guidelines
SARA-G350 ATEX modules are certified as components intended for use in potentially explosive
atmospheres (refer to section 4.5 and refer to the ‘Approvals‘ section of the
SARA-G3 series Data
Sheet [1] for further details), with the following marking:
Ex II 1G, Ex ia IIC/IIB
According to the marking stated above, the SARA-G350 ATEX modules are certified as electrical
equipment of:
group ‘II’: intended for use in areas with explosive gas atmosphere other than mines susceptible to
firedamp
category ‘1G’: intended for use in zone 0 hazardous areas, in which explosive atmospheres caused by
mixtures of air and gases, vapours or mists are continuously present, for long periods or frequently,
so that the modules are also suitable for applications intended for use in zone 1 and zone 2
hazardous areas
level of protection ‘ia’: intrinsically safe apparatus with very high level of protection, not capable of
causing ignition in normal operation and with the application of one countable fault or a combination of
any two countable fault plus those non-countable faults which give the most onerous condition
subdivision ‘IIC/IIB’: intended for use in areas where the nature of the explosive gas atmosphere is
considered very dangerous based on the Maximum Experimental Safe Gap or the Minimum Ignition
Current ratio of the explosive gas atmosphere in which the equipment may be installed (typical gases
are hydrogen, acetylene, carbon disulphide), so that the modules are also suitable for applications
intended for use in subdivision IIB (typical gases are ethylene, coke oven gas and other industrial
gases) and subdivision IIA (typical gases are industrial methane, propane, petrol and the majority of
industrial gases)
The temperature range of use of SARA-G350 ATEX modules is defined in the ‘Operating temperature
range’ section of the
SARA-G3 series Data Sheet [1].
Even if the SARA-G350 ATEX modules are certified as components intended for use in potentially
explosive atmospheres as described above, the application device that integrates the module must be
approved under all the certification schemes required by the specific application device to be deployed in
the market as apparatus intended for use in potentially explosive atmospheres.
The certification scheme approvals required for the application device integrating SARA-G350 ATEX
modules, intended for use in potentially explosive atmospheres, may differ depending on the following
topics:
the country or the region where the application device must be deployed
the classification of the application device in relation to the use in potentially explosive atmospheres
the classification of the hazardous areas in which the application device is intended for use
Any specific applicable requirement for the implementation of the appratus integrating SARA-G350
ATEX modules, intended for use in potentially explosive atmospheres, must be fulfilled according to
the exact applicable standards: check the detailed requisites on the pertinent normatives for the
