User Manual

15 • Operation in Measuring Mode SC-01 Operator’s Manual
Table 3: Alarm Types and Indications
Alarm Type LCD Indications Other Indications
Warning
Concentration of gas
rises above the
Warning level.
• Gas reading
flashes.
• Back light turns on.
• Pulsing tone
alternates with
alarm LEDs
flashing once per
second.
• Unit vibrates once
per second.
Alarm
Concentration of gas
rises above the Alarm
level.
• Gas reading
flashes.
• Back light turns on.
• Pulsing tone
alternates with
alarm LEDs
flashing twice per
second.
• Unit vibrates twice
per second.
TWA or STEL
Concentration of
target gas rises above
the TWA or STEL
alarm point.
• Back light turns on.
• Gas reading
flashes.
• TWA or STEL
replaces the gas
name in the upper
left of the LCD.
• Pulsing tone
alternates with
alarm LEDs
flashing once per
second.
• Unit vibrates once
per second.
Over Range
Concentration of gas
rises above the full
scale of the SC-01.
(Or there could be a
problem with the unit.)
• Gas reading
replaced by blinking
brackets.
• Back light turns on.
• Gas name in upper
right of display
replaced by OVER.
• Pulsing tone
alternates with
alarm LEDs
flashing twice per
second.
• Unit vibrates twice
per second.
Low Battery Warning
Last remaining bar on
the right in battery icon
flashes.
None
Dead Battery Alarm • Gas name and
reading replaced by
BATTERY FAIL.
• Battery icon
flashes.
Quick pulsing tone
and LED flashing for a
few seconds
alternates with the unit
vibrating for one
second.