37 • Measuring Mode, Alarms GX-6000 Operator’s Manual
TWA or STEL
Concentration of CO, H
2
S, or
high range VOC rises above
the TWA or STEL alarm
setting.
• Affected channel display
alternates between gas
reading and TWA or STEL
• Alarm LED arrays flash in
circle sequence once per
second
• Backlight turns on
• High-low tone
sounding twice per
second
• Vibrator pulses once
per second
Over Range
• Affected channel display
alternates between OVER
displayed where the gas
reading normally is and OVER
displayed where the reading
units normally are
• Alarm LED arrays flash in
circle sequence twice per
second
• Backlight turns on
• High-low tone
sounding four times
per second
• Vibrator pulses twice
per second
Low Flow
• The display indicates FAIL
LOW FLOW
• Alarm LED arrays flash once
per second
• Backlight turns on
Double pulsing tone
once per second
Low Battery Warning
• The last bar in the battery icon
disappears and the battery
icon starts flashing
None
Dead Battery Alarm
• Gas readings disappear and
FAIL BATTERY appears at the
top of the screen
• Alarm LED arrays flash once
per second
Double pulsing tone
once per second
Sensor Failure
• SENSOR appears at the top of
the screen and the failed
sensor(s) are indicated with
FAIL under the gas name.
• Alarm LED arrays flash once
per second
Double pulsing tone
once per second
Clock Failure
• FAIL CLOCK appears at the
top of the screen
• Alarm LED arrays flash once
per second
Double pulsing tone
once per second
Table 6: Alarm Types and Indications
Alarm Type Visual Indications Other Indications