20
Alarms and Limits
Alarms and Limits
The intended operator’s position for correctly perceiving a visual alarm signal and its priority is
1 meter (3.3 feet), per IEC 60601-1-8.
High Priority Alarms
High priority alarms require immediate attention to the patient. High priority alarms are indicated
with rapidly blinking red LEDs in sync with the Main Alarm LED, when alarm limits are met or
exceeded. Low perfusion is indicated by a red segment on the Pulse Strength Bar Graph LED.
High priority alarms are: 3 beeps, pause, 2 beeps and a 10-second pause. This sequence
repeats until the alarm is cleared or silenced. The following table describes the default settings,
adjustment ranges and intervals.
CAUTION:
Review all limits to ensure they are appropriate for the patient.
CAUTION:
Setting alarm limits to extremes can render the alarm system useless.
Table 6: High Priority Alarms
High Priority Alarm Description
Default
Adjustment
Options
Adjustment
Interval
SpO
2
Upper Alarm Limit
Off
Off, 80 to 100
1% SpO
2
SpO
2
Lower Alarm Limit
85%
Off, 50 to 95
1% SpO
2
Pulse Upper Alarm Limit
200 BPM
Off, 75 to 275
5 BPM
Pulse Lower Alarm Limit
50 BPM
Off, 30 to 110
5 BPM
Low Perfusion Alarm Red segment on Pulse Strength Bar Graph indicates low patient perfusion.
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