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Troubleshooting
Possible cause
How to correct
Batteries are worn out.
Replace the batteries with new ones.
(See to Page 6.)
Nothing is displayed when
you push the ON/OFF
button.
Measurement cannot be
made.
Or the blood pressure
values are displayed abnor-
mally high (low).
The wrist cuff is not held
at the level of the heart.
Measure your blood pressure again in
correct posture.
(Refer to Page 9.)
Trouble
You are talking or moving
your hands during meas-
urement.
Be still and make measurement.
The directions of polarities
of inserted batteries
(+ and -) are wrong.
Insert the batteries correctly.
(Refer to Page 6.)
The wrist cuff is not
wrapped firmly.
Wrap the wrist cuff correctly. (Refer to
Page 7.)
Too much stress is applied
on your shoulder or arm.
Relax yourself and make measure-
ment.
Contact the store where the
unit was sold or the nearest
OMRON distributor.
Refer to the section on "Wrist Blood Pressure Monitor."
(Refer to Page 21.)
The blood pressure values
differ from the values meas-
ured at brachial.
Air is leaking from the wrist cuff.
Blood pressure values are
displayed before the monitor
inflates to the required
value.
Blood pressure value tends to fluctuate depending on the mental
state during measurement or the measuring time. Breathe deeply to
relax yourself and make measurement again.
(Refer to Page 22.)
Blood pressure value fluc-
tuates each time of mea-
surement.
Or the blood pressure val-
ues are displayed abnormal-
ly high (low).
• If you cannot resolve the problem even after taking the above-mentioned measures, please contact
the nearest OMRON dealer or distributor.
Spare parts and accessories
OMRON considers, due to the used high company and quality standards, the main unit as a
non-serviceable part because of the necessity of proper calibration after replacement of high-tech
components.
The cuff can be replaced by an authorised expert.
Specifications
Name : OMRON Fully Automatic Blood Pressure Monitor
for measurement on the wrist
Model : 637IT
Display : Dot matrix LCD display
Measurement : Oscillometric method
Measurement Range : Pressure; 0 to 299 mmHg, Pulse rate; 40 to 180 /min.
Accuracy : Pressure; within +/-3 mmHg, Pulse rate; within +/-5% of reading
Inflation : Automatic inflation with pump
Deflation : Automatic rapid deflation
Pressure Detection : Electrostatic capacity semi-conductor pressure sensor
Power supply : Two LR03 batteries (AAA)
Battery Life : Approximately 300 times of measurement when using alkaline
batteries (In case of the monitor is used three times a day inflat-
ing to 170 mmHg at the room temperature of 22°C)
Operating Temperature
and Humidity : +10° to +40°C, 30 to 85% RH
Storage temperature
and humidity : -20° to +60°C, 10 to 95% RH
Measurable
circumference of wrist : 135 to 215 mm
Weight of Main Unit : Approximately 150 g (not including batteries)
External Dimensions : 78 (W) x 65.5 (H) x 37.2 (D) mm (not including the wrist cuff)
Electric Shock Protection : Internal power supply appliance type B
Accessories : Two LR03 alkaline batteries for monitoring use, storage case,
Instruction Manual, USB cable, software
• In the interest of product improvement, specifications are subject to change without notice.
EU-Representative: OMRON Healthcare Europe B.V.
Kruisweg 577
NL-2132-NA Hoofddorp
=Type B