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APPENDIX 3
IECEx certification
A3.0 The IECEx Certification Scheme
IECEx is a global certification scheme for explosion
protected products which aims to harmonise
international certification standards.
For additional information about the IECEx
certification scheme and to view the BEKA associate
certificates, please visit www.iecex.com
A3.1 IECEx gas certification
The BA474D Indicating Temperature Transmitter has
been issued with an IECEx Certificate of Conformity
number IECEx ITS 09.0005 that specifies the
following certification codes and marking for use in
explosive gas atmospheres:
Intrinsic safety gas
Ex ia IIC T5
certification.
Associated apparatus
[Ex ia] IIC
gas certification.
When connected to a certified IECEx system the
BA474D may be installed in:
Zone 0
explosive gas air mixture
continuously present.
Zone 1
explosive gas air mixture
likely to occur in normal
operation.
Zone 2 explosive gas air mixture not likely
to occur, and if it does will only
exist for a short time.
Be used with gases in groups:
Group A propane
Group B ethylene
Group C hydrogen
Having a temperature classification of:
T1
450oC
T2
300oC
T3
200oC
T4
135oC
T5
100oC
At an ambient temperature between –40 and +70
o
C.
When the transmitter is installed in a safe area, the
associated apparatus IECEx certification allows input
terminals 1, 2, 3 & 4 to be directly connected to a
sensor in a hazardous area without the need for a
Zener barrier or galvanic isolator. See sections 5.2
and 6.3 for system design and installation
information.
A3.1.1 Installation in an explosive gas
atmosphere
For installations in gas atmospheres the BA474D
IECEx and ATEX certifications have identical intrinsic
safety parameters and installation requirements. The
ATEX system design requirements described in
section 5 of this manual may therefore be used for
IECEx installations in gas atmospheres, but the local
code of practice should also be consulted.
