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How to Measure Blood Pressure
How to Measure Blood Pressure (in CHECK Mode)
Accuracy of pressure display can be checked in the CHECK Mode.
What you need
(1) Calibrated mercury blood pressure monitor (including rubber ball), (2) T-shaped tube, (3) two
air tubes, and (4) a cylindrical object to wrap the cuff such as a tea container (a sturdy one that will
not break or deform under pressure)
How to use the blood pressure monitor
1. Connect the
mercury blood
pressure monitor,
rubber ball, and this
monitor with the T-
shaped tube as
shown in the Figure.
2. Push the ON/OFF
(power) Button to
turn on the power.
3. Set the MODE
Selector to
"CHECK".
4. Tightly wrap the cuff over a sturdy cylindrical object.
5. Close the air release valve of the rubber ball and inflate the
monitor to a certain value (pressure to be checked).
The systolic and diastolic pressure values are displayed.
6. Compare the values displayed on the monitor and those on
the mercury.
7. Open the air release valve of rubber ball to deflate.
CHECK result
(1) Generally, the test tolerance of blood pressure monitor (accuracy of pressure when shipped
from the factory) should not exceed 4 mmHg.
(2) If the CHECK result shows a difference of +/- 5 mmHg or more, contact the store where you
purchased this unit or the nearest OMRON dealer.
Mercury blood
pressure monitor
* Measurement error may occur even with the mercury blood pressure monitor because of insufficient amount of mercury in the
mercury tank, dirty glass tube, or clogged glass tube cap.
HEM-907-draft(Eng) 9/21/00 4:08 PM Page 22