Industrial Scientific TANGO TX2, Руководство по эксплуатации продукта

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7
Alarms
Alarms notify the worker of danger. The high alarm is fast in pace with red lights and steady sound. By
comparison, the low alarm is slower with blue lights, red lights, and steady sound. Alarms persist until the
alarm-causing condition is no longer detected.
Figure 3.2 Alarms and their related display symbols
High-alarm events
and and
STEL
High-alarm gas Over-range gas STEL
!
and
F
Critical low battery System error (888)
a
Sensor failure
Low-alarm events
and
TWA
Low-alarm gas TWA
—
a
Variations: 483 for sensor error; 408 for no sensor installed.
Warnings
Warnings notify the worker of a condition that needs attention.
Some warnings precede a related alarm. For example, a low-battery
warning occurs before the critical low-
battery alarm .
Warnings turn on and off repeatedly. The more urgent the warning, the shorter the time between on-off
occurrences; i.e., a warning that repeats every two seconds is more urgent than a warning that repeats
every 30 seconds. Warnings persist until the causing issue is resolved.