2. Explosion Protection Instrumentation in Zone 2/Division 2
2-2
TI 32S01J30-01E
Precautions
• To install a device in accordance with the standards above, the device needs to be
accommodated in a keyed metal cabinet and installed. As for US (FM), it is necessary to use
a cabinet complying with FM Class 3810 and FM Class 3600 or approved by FM or local
testing authorities for explosion-proof products.
As for Canada (FM), it is necessary to use a cabinet approved by CSA or local testing
authorities for explosion-proof products. (*1)
• As a rule, NI explosion protection where FM approved device is connected to CSA approved
device shall not be approved. It is necessary to connect devices approved by the same
standard.
• Installation, wiring and maintenance of the devices should be carried out by the engineers or
other professional personnel with related expertise.
• The Installation and the wiring should be in accordance with NEC (the National Electrical
Code : ANSI/NFPA-70), CEC (Canadian Electrical Code) or wiring construction standards of
the countries or regions where wiring is laid.
• During installation, the venting slots of the devices must not be blocked by cable parts, fixing
accessories, etc. (*1)
• When the devices are used, abide by the following guidance so as to ensure the safety and
performance.
- Make sure that the door of the cabinet is closed when the devices are running.
- Make sure that all the empty slots in the cabinet should be properly covered with attached
caps.
- Make sure that all the cables are rigidly fixed in the cabinet.
- Make sure that the breakers are in the power supply circuits located in non-hazardous
areas so that the power can be shutoff when abnormality occurs.
• Both the initial and periodical inspection should be based on the regulations of IEC 60079-
17 and carried out by the personnel who have received the professional training.
• Instructions provided in GS (General specifications), TI (Technical Information of Installation
Guidance) and/or IM (User’s Manuals) shall be observed.
• As for the precautions of N-IO field enclosure, refer to Appendix 1.3 US (FM) NI/Canada
(FM) NI/IECEx Ex “ec” Control Drawing of N-IO field enclosure.
• Please observe the following precautions while product is operating or under maintenance
service.
*1:
Excluding N-IO field enclosure.
WARNING
WARNING -EXPOSURE TO ANY CHEMICALS MAY DEGRADE THE SEALING PROPERTIES
OF MATERIALS USED IN THE FOLLOWING DEVICES ; SBD2D, SBD3D, SBD4D and
S1BB4D.
Dec. 3, 2021-00
