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In What Environment will I measure?
  • Potentially Flammable or Explosive
    • Should be rated intrinsically safe for use in the particular hazardous location
    • Nationally Recognized Testing Laboratory (NRTL) - 29 CFR 1910.7
    • Hazardous locations defined in National Electrical Code
      • Division I - hazardous under normal conditions
      • Division II - hazardous under abnormal conditions
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