MeshGuard LEL IR & CO2 IR User’s Guide
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If the instrument does not detect gas after counting down to 0, the LCD displays “Err” (for “error”).
The LED glows red and the buzzer sounds to provide extra warning. The instrument automatically
returns to the span calibration display.
Note:
This could mean the sensor is contaminated or expired.
Note:
To stop span calibration before the countdown reaches 0, press any key. The LCD displays
“no” and advances to the next programming menu, Change High Alarm.
