Model GP-01 Operator’s Manual
Operation • 17
Alarms
This section covers alarm indications. It also tells you how to reset the
Model GP-01 after an alarm has occurred and how to respond to an alarm
condition.
Alarm Indications
The Model GP-01 will sound an alarm, flash its alarm lights, and vibrate
when the target gas concentration rises above the low alarm point. The
Model GP-01 also sounds an alarm, flashes its alarm lights, and vibrates
when the high alarm point is reached. In addition, the Model GP-01 has a
low battery warning, a dead battery alarm, an over range alarm, a sensor
failure alarm, and a system failure alarm. See Table 4 below for a
description of each alarm indication.
Table 4: Alarm Types and Indications
Alarm Type
LCD Indications
Other Indications
Low Alarm
Concentration of gas
rises above the low
alarm point.
• Gas reading
flashes.
• Back light turns on.
• Pulsing tone occurs
once per second.
• Unit vibrates once
per second.
• Alarm lights flash
once per second.
High Alarm
Concentration of gas
rises above the high
alarm point.
• Gas reading
flashes.
• Back light turns on.
• Pulsing tone occurs
twice per second.
• Unit vibrates twice
per second.
• Alarm light flashes
twice per second.
Over Range
Concentration of gas
rises above the
measuring limit of the
Model GP-01. (Or
there could be a
problem with the unit.)
• Gas reading
replaced by blinking
brackets.
• Back light turns on.
• Pulsing tone occurs
once per second.
• Unit vibrates once
per second.
• Alarm light flashes.
Low Battery Warning
• Last remaining bar
on the right in
battery icon
flashes.
• None
