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C-1
APPENDIX C
CSA and FM Intrinsic Safety Approvals
CANADIAN STANDARDS ASSOCIATION (CSA)
The 275 is intrinsically safe for use in Class 1, Division 1, Groups A, B, C,
and D hazardous locations when connected to CSA certified intrinsic safety
barriers as indicated in the recreated connection diagram drawing displayed
below.
I.S.
Barrier
Power
Supply
Hazardous Area
Non-Hazardous Area
CSA Certified
Intrinsically Safe
Device
00275-0082
DWG No.
Rev. A. Sheet 1 of 1
30V Max, 330 Ohms Min
28V Max, 300 Ohms Min
22V max, 180 Ohms Min
Certified
intrinsic safety barriers are listed below
TITLE: 275 CSA INTRINSICALLY SAFE CONFIGURATION
“Ex1a”
INTRINSICALLY SAFE / SECURITE INTRINSEQUE
Load
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