23
Technical alarm – description
Should the recorded blood pressure (systolic or diastolic) lie
outside the limits specified in the section “Technical speci-
fications”, the technical alarm will appear on the display
indicating either “ ” or “Lo”. In such cases, you should seek
medical assistance and check the accuracy of your proce-
dure.
The limit values for the technical alarm are factory set and
cannot be adjusted or deactivated. These alarm limit val-
ues are accorded second priority under the standard IEC
60601-1-8.
The technical alarm is a non-locking alarm and must not be
reset. The signal shown on the display will disappear auto-
matically after about 8 seconds.
NOTE:
If the unit still does not work, contact customer service at
1-800-536-0366.
10. Technical Specifications
Model no. BM 47
Measurement
method
Oscillometric, non-invasive blood
pressure measurement on the up-
per arm
Measurement range Cuff pressure 0-300 mmHg,
systolic 60-260 mmHg,
diastolic 40-199 mmHg,
Pulse 40-180 beats/minute
Display accuracy Systolic ± 3 mmHg,
diastolic ± 3 mmHg,
pulse ± 5 % of the value shown
Measurement
inaccuracy
Max. permissible standard devia-
tion according to clinical testing:
systolic 8 mmHg /diastolic 8 mmHg
Memory 4 x 30 memory spaces
Dimensions
5.3 in x 4 in x 2 in
(134 mm x 102 mm x 52.5 mm)
Weight Approximately 280g
(without batteries and cuff)
Cuff size 8.7 in - 16.5 in (22 - 42 cm)
Permissible operat-
ing conditions
+50 °F to +104 °F (+10 °C to +40 °C)
,
≤ 85 % relative air humidity (non-
condensing)
Permissible storage
conditions
-4 °F to +122 °F (-20 °C to +50 °C),
≤ 85 % relative air humidity, 800-
1050 hPa ambient pressure
Power supply
4 x 1,5 V AA batteries
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