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9. Error messages/troubleshooting
In the event of errors, the error message EE appears on the
display.
Error messages may appear if:
•
Systolic or diastolic pressure could not be measured (EE1)
•
The cuff is faulty or fastened too tightly or too loosely (EE2)
•
The pump pressure is higher than 290mmHg (EE8)
•
The data could not be sent via Bluetooth
®
(EE7)
10. Technical specifications
Model No. BM 57
Measurement me-
thod
Oscillometric, non-invasive blood pres-
sure measurement on the upper arm
Measurement range Cuff pressure 0 – 300mmHg,
Systolic 50 – 250mmHg,
Diastolic 40 – 180mmHg,
Pulse 40 – 180beats/minute
Display accuracy Systolic ± 3 mmHg,
Diastolic ± 3 mmHg,
Pulse ± 5 % of the value shown
Measurement inac-
curacy
Max. permissible standard deviation
according to clinical testing:
Systolic 8 mmHg /
Diastolic 8 mmHg
Memory 2 x 60 memory spaces
Dimensions L 94 mm x W 161 mm x H 64 mm
Weight 317 g (without cuff)
Cuff size 23 to 43 cm
Permissible operating
conditions
10°C to +40°C, ≤85% relative humidity
(non-condensing)
Permissible storage
conditions
-20 to + 55°C,
≤85%
relative humidity,
800 – 1050 hPa ambient pressure
Power supply
2x 1.5V
AA batteries
Battery life Lasts for approx. 150 measurements
depending on the blood pressure and
pump pressure as well as the number
of Bluetooth
®
connections.
Accessories Cuff, instructions for use, storage
pouch
Classification Internal supply, IP22, no AP or APG,
continuous operation, application part
type BF
Data transfer via
Bluetooth
®
wireless
technology
The blood pressure monitor uses Blue-
tooth
®
low energy technology,
2.4 GHz frequency band,
Compatible with Bluetooth 4.0 smart-
phones/tablets
List of supported smartphones/tablets
The serial number is located on the device or in the battery
compartment.
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