2. Explosion Protection Instrumentation in Zone 2/Division 2
2-1
TI 32S01J30-01E
2. Explosion Protection
Instrumentation in Zone 2/Division 2
2.1 Non-Incendive
This document contains the details of FM Approvals Certification, NFM014-A13, NIE009-A101,
and NFM037-A101. The precautions on handling the Non-Incendive products, the notices on
wiring the Incendive products and so on are explained in this document.
Non-Incendive (hereinafter described as NI), especially in North America, represents one of the
explosion protection constructions for explosion-proof apparatus used in hazardous areas. NI is a
construction that enhances safety not to cause a spark, an arc or high surface temperatures in a
normal operation. A safety control unit, a safety node unit, unit for Optical Bus Repeater Module,
an I/O module, an optical repeater, an N-IO node, and N-IO field enclosure in the ProSafe-RS/
ProSafe-RS Lite have acquired NI certificates of the following standards from FM. The
certification ensures that the products above can be used in Class I, Division 2 (*1) hazardous
(classified) areas and that the equipment can be directly connected to an NI approved field
device installed in Class I, Division 2 hazardous areas. In addition, electrical equipment installed
in non-hazardous areas can be directly connected to an NI approved local device installed in
Class I, Division 2 hazardous areas.
*1:
Class I, Division 2 is a place where gases or vapors do not form a potentially explosive atmosphere in a normal state, and even if
they do, it stays for only a short period of time.
Explosion-proof specifications, Complied standard, Compliant
Products, and Parameters
The references are listed in the following table.
Explosion protection construction
Reference of Explosion-proof specifications, Complied Standard, Compliant
Products, and Parameters
SSSC60
SSC50
SSC57
L1SC70
S2SC70
FIO Node
Unit
N-IO
Node
Unit
N-IO field
enclosure
S2BN4D S2BN5D
US (FM) Non-Incendive
App. 1.1
App. 1.2
App. 1.1
App. 1.2
App. 1.3
–
App. 1.4
Canada (FM) Non-Incendive
–
–
App. 1.1
App. 1.2
App. 1.3
–
App. 1.4
–: Non-compliant
Note: Regarding the latest conformity standard, refer to the GS 32P01B60-01EN “Standards Compliant Models”
Dec. 3, 2021-00
