BeneVision N Series Patient Monitor Operator’s Manual 10 - 5
To initiate auto alarm limits, follow this procedure:
1. Access the Limits page in either of the following WAYS:
◆ Select the Alarm Setup quick key → select the Limits tab.
◆ Select the Main Menu quick key → from the Alarm column select Limits.
2. From the Limits page, select Auto Limits at the left bottom.
3. Select Ok from the popup dialog box.
Then the monitor will automatically calculate alarm limits basing on the latest measured values. Before applying 
these automatically created alarm limits, confirm if they are appropriate for your patient from the Limits menu. If 
not, you can adjust them manually. These alarm limits will remain unchanged until you select auto limits again or 
adjust them manually.
The monitor calculates auto limits basing on the following rules:
Module Parameter Lower Limit Upper Limit Auto Limit Range
Adult/
pediatric
Neonate Adult/
pediatric
Neonate
ECG HR/PR 
(bpm)
HR × 0.8 or 40 
(whichever is 
greater)
(HR - 30) or 90 
(whichever is 
greater)
HR × 1.25 or 
240 
(whichever is 
smaller)
(HR + 40) or 
200 
(whichever is 
smaller)
Adult/pediatric: 35 to 240
Neonate: 55 to 225
Resp RR (rpm) RR × 0.5 or 6 
(whichever is 
greater)
(RR - 10) or 30 
(whichever is 
greater)
(RR × 1.5) or 
30 (whichever 
is smaller)
(RR + 25) or 
85 (whichever 
is smaller)
Adult/pediatric: 6 to 55
Neonate: 10 to 90
SpO
2
SpO
2
 (%) Same as the 
default alarm 
limit
Same as the 
default alarm 
limit
Same as the 
default alarm 
limit
Same as the 
default alarm 
limit
Same as the 
measurement range
NIBP NIBP-S 
(mmHg)
(SYS × 0.68 + 
10) 
(SYS - 15) or 
45 (whichever 
is greater)
(SYS × 0.86 + 
38) 
(SYS + 15) or 
105 
(whichever is 
smaller)
Adult: 45 to 270
Pediatric: 45 to 185
Neonate: 35 to 115
NIBP-D 
(mmHg)
(Dia × 0.68 + 
6) 
(Dia - 15) or 
20 (whichever 
is greater)
(Dia × 0.86 + 
32) 
(Dia + 15) or 
80 (whichever 
is smaller)
Adult: 25 to 225
Pediatric: 25 to 150
Neonate: 20 to 90
NIBP-M 
(mmHg)
(Mean × 0.68 
+ 8) 
(Mean - 15) or 
35 (whichever 
is greater)
(Mean × 0.86 
+ 35) 
(Mean + 15 or 
95) 
(whichever is 
smaller)
Adult: 30 to 245
Pediatric: 30 to 180
Neonate: 25 to105
Temp
(xx refers 
to 
temperat
ure site)
Txx (°C) (Txx - 0.5) (Txx - 0.5)  (Txx + 0.5) (Txx + 0.5) 1 to 49 
TD (°C) Same as the 
default alarm 
limit
Same as the 
default alarm 
limit
Same as the 
default alarm 
limit
Same as the 
default alarm 
limit
Same as the 
measurement range
TempIF T (°C) (T - 0.5) (T - 0.5)  (T + 0.5) (T + 0.5) 33.6 to 41.4 
IBP: ART/
Ao/UAP/
BAP/FAP/
LV/P1-P4 
(Arterial 
pressure)
IBP-S 
(mmHg)
SYS × 0.68 + 
10
(SYS - 15) or 
45 (whichever 
is greater)
SYS × 0.86 + 
38 
(SYS + 15) or 
105 
(whichever is 
smaller)
Adult: 45 to 270
Pediatric: 45 to 185
Neonate: 35 to 115
IBP-D 
(mmHg
(Dia × 0.68 + 
6)
(Dia - 15) or 
20 (whichever 
is greater)
(Dia × 0.86 + 
32)
(Dia + 15) or 
80 (whichever 
is smaller)
Adult: 25 to 225
Pediatric: 25 to 150
Neonate: 20 to 90
IBP-M 
(mmHg)
Mean × 0.68 + 
8 
(Mean - 15) or 
35 
(whichever is 
greater)
Mean × 0.86 + 
35
(Mean + 15) 
or 95 
(whichever is 
smaller)
Adult: 30 to 245
Pediatric: 30 to180
Neonate: 25 to 105