3. Explosion Protection Instrumentation in Zone 2/Division 2
3-2
TI 33Q01J30-01E
Precautions in Use
• To install a device in accordance with the standards above, the device needs to be
accommodated in a keyed metal cabinet and installed. It is necessary to use a cabinet
approved by CSA or local testing authorities for explosion-proof products. (*1)
• Use a cabinet which is larger than the size of W600 X H760 X D350 (mm) to mount a FIO
node unit on. (*1)
• As a rule, NI explosion protection with a connection of a CSA standard approved device and
an FM standard approved device shall not be approved. It is necessary to connect devices
approved by the same standard.
• As for the precautions of N-IO field enclosure, refer to Appendix.1.4 CSA NI/FM NI/IECEx
Ex “ec” Control Drawing of N-IO field enclosure.
*1:
Excluding N-IO field enclosure.
Dec .3, 2021-00
