Honeywell MeshGuard LEL IR User Manual page 48

MeshGuard LEL IR & CO2 IR User's Guide
When the low battery alarm occurs, there will be approximately 20 to 30 minutes of operating time
remaining. When the battery voltage falls below the low threshold, the instrument turns off
automatically.
Over Range Alarm
When a gas concentration exceeds 100% of LEL, the MeshGuard LEL IR displays "OVR" and its
buzzer and LED are activated.
Calibrating MeshGuard LEL IR
• Calibration intervals and procedures may vary due to national legislation.
• Calibration gas flow should be verified and be between 400 cc/min and 800 cc/min.
If you use a zero air or other gas cylinder, you must use the MeshGuard Calibration
Adapter. A calibration adapter is not necessary for calibrating the MeshGuard LEL IR in
clean fresh air.
Connecting Calibration Gas
1. Connect the calibration gas to the MeshGuard LEL IR as shown.
Calibration adapter
connected to
calibration gas cylinder
IMPORTANT!
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