FLAMMABLE ATMOSPHERE / LEL MONITORING
IEC 60079 · NFPA 497/499 · OSHA 1910.146
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EXIT HELP
SYSTEM CONTROLS
OPERATING MODE
Mode MANUAL
AUTO / MANUAL
STANDBY
SYSTEM GAUGES
LEL0%LEL
Oxygen0%
H2S0ppm
CO0ppm
Temperature0°C
Ventilation Rate0ACH
CHECKLIST
○Zero calibrate detector
○Span calibrate with test gas
○Verify detector responds within 30s
○Take initial atmospheric reading
○Record LEL O2 H2S CO levels
○Continuous monitoring active
○Verify ventilation adequate
○Issue work permit
ALARMS

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