Medisana BU 312 Instruction Manual

1
(b) 2-3 cm
(a)
2
(c)
3
How is blood pressure measured?
The medisana BU 312 is a blood pressure unit which is used to measure blood pressure at the upper arm. The measurement
is carried out by a microprocessor, which, via a pressure sensor, measures the vibrations resulting from the inflation and
deflation of the cuff over the artery.
Blood pressure classification
systolic mmHg diastolic mmHg Classification
≥ 160 ≥ 100 Stage 2 Hypertension (emergency)
140 - 159 90 - 99 Stage 1 Hypertension (mild)
90 - 139 60 - 89
< 90 < 60
Abnormal phenomena and handling troubleshooting
Abnormal Cause
displays
Blood pressure indicator Er U The pressure cannot reach 30 mmHg
(4 kPa) in 12seconds
red
Er H The inflation reaches 295mmHg, and it deflates
yellow
automatically after 20ms
Normal green
Er 1 The pulse rate is not detected correctly
Abnormal green
Er 2 Too much disturbance (Move, talk, or magnetic
disturbance during a measurement)
Er 3 The measurement result is abnormal
Er 23 SYS value reads lower than 57mmHg
Er 24 SYS value reads higher than 255mmHg
Er 25 DIA value reads lower than 25mmHg
Er 26 DIA value reads higher than 195mmHg
Abnormal phenomena and handling
Abnormal Cause
displays
Failure to Whether the power is insufficient
power on
Whether the positive and negative poles
of the battery are installed reversely
No inflation
Whether the air tube plug is inserted
tightly
Whether the air tube is broken or leaked
Unable to Whether the arm is moved when
measure due to
pressurization
the display error
Whether you talk during the
measurement
Air leakage Whether the cuff is twined too loose
of the cuff
The airbag of the cuff is ripped
Solution
Pleased try again
Move to a closer distance
Pleased try again
Solution
Replace the batteries or insert the Type-C charging cable
for power supply
Install the batteries correctly
Insert the air tube plug firmly into the jack
Please contact the dealer to replace with a new cuff
Keep your arm and body still
Keep quiet while measuring the blood pressure
Please tighten the cuff
Please contact the dealer to replace with a new cuff