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2. Explosion Protection Instrumentation in Zone 2/Division 2
2-12
TI 32S01J30-01E
 ECAS-Ex Ex “ec”
The references are listed in the following table.
Explosion protection construction
Reference of Explosion-proof specications,
Complied Standard, and Compliant Products
SSSC60
SSC50
SSC57
L1SC70
S2SC70
FIO Node
Unit
N-IO
Node Unit
N-IO eld
enclosure
S2BN4D S2BN5D
ECAS-Ex “ec” – App. 1.2 App. 1.1 App. 1.2 – – App. 3.2
–: Non-compliant
Note: Regarding the latest conformity standard, refer to the GS 32P01B60-01EN “Standards Compliant Models”
Note: Refer to descriptions for IECEx Ex “ec” on this document for installation and precautions for ECAS-Ex Ex “ec”.
 UKEX Ex “ec”, UKEX Type “n”
The references are listed in the following table.
Explosion protection construction
Reference of Explosion-proof specications,
Complied Standard, and Compliant Products
SSSC60
SSC50
SSC57
L1SC70
S2SC70
FIO Node
Unit
N-IO
Node Unit
N-IO eld
enclosure
S2BN4D S2BN5D
UKEX Ex “ec” (*1) App. 2.1 App. 2.2 App. 2.1 App. 2.2 App. 2.3 – App. 2.5
UKEX Type “n” – – – – – App. 2.4 –
–: Non-compliant
Note: Regarding the latest conformity standard, refer to the GS 32P01B60-01EN “Standards Compliant Models”
Note: Refer to descriptions for ATEX Ex “ec” or ATEX Type “n” on this document for installation and precautions for UKEX Ex “ec” and
UKEX Type “n” respectively.
*1: The following products that use sealed devices also comply with UKEX Type “nC”.
S2SC70, SSC60, SSC50, SSC57,L1SC70, SNB10D, L1NB10D, SBD2D,SBD3D, SBD4D, S1BB4D, S2ZN70D, and
S2ZN60D.
 KCs Ex “ec”
N-IO eld enclosure (S2NN70D) comply with KCs Ex “ec”.
Regarding the latest conformity standard, explosion-proof specications and compliant products,
refer to the GS 32P01B60-01EN “Standards Compliant Models”.
Refer to descriptions for IECEx Ex “ec” on this document for installation and precautions for
installation and precautions for KCs Ex “ec”.
 CCC-Ex/NEPSI Type “n”
N-IO eld enclosure (S2NN70D, S2NN60D, S2CB60) comply with CCC-Ex/NEPSI Type “n”.
Regarding the latest conformity standard, explosion-proof specications and compliant products,
refer to the GS 32P01B60-01EN “Standards Compliant Models”.
Refer to descriptions for IECEx Ex “ec” on this document for installation and precautions for
installation and precautions for CCC-Ex/NEPSI Type “n”.
 Precautions
Refer to the latest edition of IM 32Q01J30-31E for the installation and the precaution for Ex “ec”/
Type “n” compliant devices.
Refer to the latest edition of IM 32Q01J30-31E for the installation, the precaution, maintenance
and repair for N-IO eld enclosure.
This document can be found at the following web site:
https://partner.yokogawa.com/
Nov. 10, 2022-00