• Errors occur during the measurement:
• The pump pressure is higher than 300 mmHg:
• There is a system error. If this error message appears,
please contact Customer Services:
• The batteries are almost empty:
In the above cases, you must repeat the measurement.
Make sure that the cuff tube is properly inserted and that
you do not move or talk.
Re-insert the batteries if necessary, or else replace them.
9. Cleaning and storing the device and cuff
• Clean the device and cuff carefully using a slightly damp
cloth only.
• Do not use any cleaning agents or solvents.
• Under no circumstances hold the device and cuff under
water, as this can cause liquid to enter and damage the
device and cuff.
• If you store the device and cuff, do not place heavy ob-
jects on the device and cuff. Remove the batteries. The
cuff line should not be bent sharply.
10. Technical specifications
Model No.
BM 28
Measurement
Oscillometric, non-invasive blood pres-
method
sure measurement on the upper arm
4
;
5
;
6
.
.
30
Measurement
Cuff pressure 0-300 mmHg,
range
Systolic 50-280 mmHg,
Diastolic 30-200 mmHg,
Pulse 40-199 beats/minute
Display accuracy
Systolic ± 3 mmHg,
Diastolic ± 3 mmHg,
Pulse ± 5% of the value shown
Measurement
Max. permissible standard deviation
inaccuracy
according to clinical testing:
Systolic 8 mmHg /
Diastolic 8 mmHg
Memory
4 x 30 memory spaces
Dimensions
L 134 mm x W 103 mm x H 60 mm
Weight
Approximately 367 g (without batteries,
with cuff)
Cuff size
22 to 42 cm
Permissible opera-
+10°C to +40°C, 10 to 85% relative
ting conditions
humidity (non-condensing)
Permissible sto-
-20°C to +55°C, 10 to 90% relative
rage conditions
humidity, 800-1050 hPa ambient pres-
sure
Power supply
4 x 1.5 V
AA batteries