24
How to Measure Blood Pressure
List of Error Codes
Error code Explanation
Inflation error
• When the pressure does not exceed 12
mmHg within the set time after the start of
inflation
• When the inflation does not reach the set
cuff pressure within the specified time
after the start of inflation
Deflation error
• When the deflation speed is too fast
during measurement
• When the deflation speed is too slow
during measurement
• When the measurement does not finish
within the specified time after starting the
measurement
Overpressure error
• The cuff pressure exceeded 299 mmHg.
Insufficient inflation error
• Blood pressure could not be measured
due to insufficient inflation after the
measurement ends.
Indeterminable blood pressure error
• Blood pressure could not be measured
even when the cuff pressure reached the
specified pressure.
Pulse wave small error
• Pulse wave was too small.
Measurement error
• Relationship between systolic and
diastolic pressures was abnormal.
Pulse rate error
• Pulse rate is not within the range of 30 to
199 beats/min.
Device error
• This is an indication of trouble of the main
unit.
How to correct
• Is the connector of the air tube connecting the
cuff and the main unit loose? Connect it
securely, then measure.
• Is the air tube connecting the cuff and the main
unit bent? Straighten it, then measure.
• If the cuff is wrapped loosely, it will take longer to
inflate. Wrap the cuff correctly and measure.
• Is the bladder of cuff leaking air? Replace the
bladder with new one (option).
• Is the air tube connecting the cuff and the main
unit bent? Straighten it and measure.
• If the measurement is made by setting the P-
SET to "AUTO", ask the patient not to move
his/her arm or body during the inflation. The
pressure value may be set lower during the
"AUTO" measurement because of the noise.
• Is the P-SET securely set to "AUTO"? Turn the
Knob counterclockwise as far as it goes until you
can hear a click sound.
• If the measurement is made by using the
pressure value setting method, set the value to
30 to 40 mmHg higher.
• If the cuff is wrapped loosely, correct
measurement is not possible. Wrap the cuff
correctly and measure.
• If the cuff is wrapped loosely, correct
measurement is not possible. Wrap the cuff
correctly and measure.
• If the cuff is wrapped over a thick cloth or by
rolling up a jacket or a shirt, the pulse wave
cannot be measured. Do not wrap the cuff over
clothings.
• Check the patient if he/she has arrhythmia.
• Ask the patient not to move his/her arm or body
during the measurement.
• Contact the store where you purchased this
monitor or the nearest OMRON dealer.
HEM-907-draft(Eng) 9/21/00 4:08 PM Page 24
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