INSTRUCTION MANUAL
FOR
DIGITAL BLOOD PRESSURE MONITOR
REF CH-657
0901
English
Contents
3 - GENERAL REMARKS
5 - PRECAUTIONS FOR USE AND MAINTENANCE
10 - IDENTIFICATION OF PARTS
12 - LOADING THE BATTERIES
13 - REMOVING THE BATTERIES
14 - HOW TO WRAP THE WRIST CUFF
16 - TIPS FOR OBTAINING ACCURATE MEASUREMENTS
18 - MEASURING YOUR BLOOD PRESSURE
20 - CALLING UP THE DATA STORED IN MEMORY
22 - ERROR INDICATIONS
23 - ABOUT “BLOOD PRESSURE”
24 - BLOOD PRESSURE Q&A
25 - BEFORE REQUESTING REPAIRS OR TESTING
26 - SPECIFICATIONS
Ensure that you have all the following components
INSTRUCTION MANUAL
FOR
DIGITAL BLOOD PRESSURE MONITOR
REF CH-657
Blood pressure
monitor unit
Storage case (for monitor)
2 AAA batteries
Instruction
Manual
English
0901
- Eng 2 -
GENERAL REMARKS
General remarks on blood pressure and blood pressure
measurement
1. To defl ate the cuff quickly, press the “START/STOP” switch.
2. The attached cuff is suitable for wrist circumferences of 13.5-
21.5 cm.
3. When attaching the cuff, the body of a blood pressure monitor
should be placed on the inside of your wrist.
4. Self measurement is not therapy! In no event should you change
the dosage of your medication prescribed by your physician.
5. As preparation for measuring your blood pressure, you should
urinate and then remain relatively still for 10 to 15 minutes prior to
measurement.
6. Exercising, eating, drinking, smoking, etc., prior to measurement
may affect the results.
7. Your blood pressure varies constantly throughout the day.
Measurements should be taken regularly at the same time each
day.
8. DO NOT place too much emphasis on the results of one
measurement. Keep a continuing record of your blood pressure
variations. A complete picture can only be obtained from a large
number of readings.
9. Emotional stress tends to cause your blood pressure to rise.
To obtain correct blood pressure measurements
1. Take fi ve or six deep breaths and then relax before measuring your
blood pressure. If you are tense when taking the measurement, you
will not get a valid reading.
2. Your blood pressure will be elevated if you are anxious or irritated,
suffering from lack of sleep or constipation, or have just taken some
exercise or eaten a meal.
3. Wrap the cuff around your wrist snugly. (
4. DO NOT measure your blood pressure after bathing or drinking.
5. If you feel the need to urinate, do so before measuring your blood
pressure.
6. Measure your blood pressure where the room temperature is
around 20°C. DO NOT measure your blood pressure when it is too
- Eng 3 -
See page 14)
English
GENERAL REMARKS
cold (below 10°C) or too hot (above 40°C) in the room.
7. DO NOT try to measure your blood pressure immediately after
drinking coffee or tea or after smoking.
8. Measure your blood pressure when you are relaxed and still. Keep
English
the center of the cuff at the level of your heart and DO NOT move
your arm or talk.
9. DO NOT measure blood pressure when the cuff has been on your
wrist for a few minutes or more. During this time, your wrist will have
built up a higher blood pressure and you will not get valid reading.
10. The fi gure below shows the blood pressure classifi cations under the
WHO standards.
SYSTOLIC
(mmHg)
Grade 3 Hypertension (severe)
180
Grade 2 Hypertension (moderate)
160
Grade 1 Hypertension (mild)
140
High-Normal
130
Normal
120
Optimal
80 85 90 100 110 DIASTOLIC
Remarks:
The graph is not exact, but
may be used as a guide
in understanding noninvasive blood pressure
measurements. The device
is only intended for use by
adults.
(mmHg)
Defi nitions and Classifi cations of Blood Pressure Levels
Measure your blood pressure at the same time each
day.
* Your blood pressure changes all the time. This means that data
gathered over a long period has far more signifi cance than data
from just one measurement. For this reason, you must measure your
blood pressure on a daily basis. Ideally, you should measure your
blood pressure at the same time each day, wherever possible.
- Eng 4 -
PRECAUTIONS FOR USE AND MAINTENANCE
Precautions for use
1. If you suffer from heart disease, high blood pressure or other
circulatory disease, consult your physician before using the monitor.
2. If you feel abnormal pressure of the cuff during use or any other
irregularity, reduce the pressure by immediately switching off the
power or remove the batteries and consult the sales outlet where
purchased.
3. If you think the measurement is abnormal or if measurement makes
you feel unwell, discontinue use and consult your physician.
4. Blood pressure measurement may not be possible for anyone with
a weak pulse or arrhythmia.
5. Repeated blood pressure measurement may cause problems such
as congestion or swelling in some people.
6. Frequently repeated blood pressure measurements will not give
accurate results. Allow an interval of about 1 minute between
measurements.
7. If you suffer from a severe problem with blood circulation in your
arms, consult your physician before using the monitor. Failure to do
so could be hazardous to your health.
8. Measurement may not be possible for anyone with insuffi cient
blood fl ow to the area where measurements will be taken or who
suffers from a frequent irregular heartbeat. Consult your physician
for advice on whether to use the monitor.
9. DO NOT wrap the cuff around an injured wrist.
10. DO NOT wrap the cuff around a wrist in which a drip (intravenous
infusion) is inserted, or which is being used for blood transfusion
as part of medical treatment. Doing so could result in an injury or a
serious accident.
11. DO NOT use the monitor in the vicinity of fl ammable gases such as
those used for anaesthesia. Doing so could ignite the gases and
cause an explosion.
12. DO NOT use the monitor in enriched oxygen environments such
as a hospital’s hyperbaric chamber or oxygen tent. Doing so could
ignite the oxygen and cause a fi re.
English
- Eng 5 -
PRECAUTIONS FOR USE AND MAINTENANCE
13. DO NOT use mobile phones near the monitor as this could result in
a malfunction.
14. If you use a cardiac pacemaker, consult your physician before using
the monitor.
English
15. Be sure to use this unit only for measuring blood pressure. DO NOT
use it for any other purpose.
16. DO NOT use this unit on infants.
17. Blood pressure measurement may not be possible for anyone with
common arrhythmias such as atrial or ventricular premature beats
or atrial fi brillation.
Maintenance Precautions
1. DO NOT store the blood pressure monitor in locations exposed to
direct sunlight, high temperatures (over 60°C), low temperatures
(below -20°C), high relative humidity (over 95%) or excessive
amounts of dust.
2. DO NOT drop the blood pressure monitor or subject it to other
shocks or vibration.
3. Remove the batteries if the monitor will be left unused for a long
period.
4. DO NOT attempt to disassemble the monitor.
5. DO NOT bend the cuff excessively.
6. If the monitor is very dirty, wipe it clean with a cloth moistened with
sterilizing alcohol or a neutral detergent. Then wipe it with a dry
cloth.
7. NEVER clean the blood pressure monitor with thinners or benzene,
as this could damage the monitor.
8. To clean the cuff, wipe it with a moist cloth. Avoid hard rubbing, as
this will cause air leakages.
- Eng 6 -
PRECAUTIONS FOR USE AND MAINTENANCE
Symbols Explanation
: The CE marking is meant to provide information to market
inspectors in the EU member countries.
: Type B applied part
: Refer to instruction manual before use
: Appliance compliance WEEE directive
: Accumulators and battery packs for separate collection
Pb
: Manufacturer
Warning
The device has been tested and homologated
in accordance with EN60601-1-2 for EMC.
This does not guarantee in any way that the
device will not be affected by electromagnetic
interference. Avoid using the device in high
electromagnetic environment.
English
- Eng 7 -
PRECAUTIONS FOR USE AND MAINTENANCE
Nature and frequency of maintenance:
This product is designed for use over an extended period of time;
however, it is generally recommended that it be inspected every two
years to ensure proper function and performance.
English
Protect the nature environment:
Please help to protect natural environment by respecting national and/or local
recycling regulations when disposing of the battery and the product at the end of
their useful live.
WEEE MARK
If you want to dispose this product, do not mix with general household
waste. There is a separate collection systems for used electronics products in
accordance with legislation under the WEEE Directive (Directive 2002/96/EC)
and is effective only within European Union.
Information for Users on Collection and Disposal of used
Batteries.
The symbol in this information sheet means that used batteries should not
be mixed with general household waste.
For proper treatment, recovery and recycling of used batteries, please take
them to applicable collection points.
For more information about collection and recycling of batteries, please
contact your local municipality, your waste disposal service or the point of sale where
you purchased the items.
Information on Disposal in other Countries outside the European
Union.
This symbol is only valid in the European Union.
If you wish to discard used batteries, please contact your local authorities or dealer
and ask for the correct method of disposal.
Note for the battery symbol.
The symbol might be used in combination with a chemical symbol. In this case it
complies with the requirement set by the Directive for the chemical involved.
Calibration:
The blood pressure measuring device is generally recommended to have the
monitor inspected every two years to ensure correct functioning and accuracy.
Please contact a distributor.
PbPb
- Eng 8 -
PRECAUTIONS FOR USE AND MAINTENANCE
Name :
Address :
European Representative:
Name : WvW electronishe Geräte Vertrieb GmbH
Address : Fintelmannstraße 20/Eingang, Martin-Heydert-Straße,
• For technical data, please contact our European Representative
CITIZEN SYSTEMS JAPAN CO.,LTD.
6-1-12, Tanashi-cho, Nishi-Tokyo-shi,
Tokyo 188-8511, Japan
D-14109 Berlin, Germany
English
- Eng 9 -
IDENTIFICATION OF PARTS
Component names
<Main Unit>
English
Display
MEMORY Switch
Battery cover
Wrist cuff
START/STOP Switch
w Stand-by
- Eng 10 -
<Display>
IDENTIFICATION OF PARTS
Systolic blood
pressure
Diastolic blood
pressure
Irregular Heartbeat
(IHB) Indicator
Pulse
English
Body Movement Indicator
Battery level indicator
Appears when the batteries are running
low. (
See page 13)
- Eng 11 -
LOADING THE BATTERIES
(Batteries supplied with the unit should be loaded in compartment
before you use the blood pressure monitor.)
English
1 Open the cover of battery compartment.
Battery cover
Pressing down on the
battery cover, slide the
cover off in the direction of
the arrow.
2 Place batteries in the compartment.
Put the batteries paying attention to the positive and negative
terminal symbols
* The battery goes in negative side fi rst.
Insert the battery near
the display fi rst.
and .
- Eng 12 -
LOADING THE BATTERIES
3 Close the battery cover.
Slide the cover in the direction
of the arrow. Push the cover on
until it clicks.
REMOVING THE BATTERIES
• When the icon is displayed or nothing appears in the display,
replace the old batteries with two new ones. All two batteries should
be changed at once.
• Do not use rechargeable batteries.
• Do not use alkaline (LR03) and manganese (R03) batteries together.
• Batteries included are for demonstration purposes only. Battery life
may be shorter than specifi ed.
• When disposing of used batteries, comply with governmental
regulations or environmental public institution’s rules that apply in
your country/area.
English
- Eng 13 -
HOW TO WRAP THE WRIST CUFF
Wrap the wrist cuff around your wrist properly. Improper wrapping of
the cuff may result in measuring errors.
English
1 Unfasten and open the wrist cuff.
2 Wrap the cuff around your left wrist
so that the monitor is positioned on
the inside of your wrist.
• Wrap the wrist cuff on bare skin.
• The wrist cuff is designed to fi t
wrists from 13.5 to 21.5 cm in
circumference.
3 Loosely fi t the wrist cuff by
pulling the end of the cuff.
- Eng 14 -
HOW TO WRAP THE WRIST CUFF
4 Position the top edge of the cuff
approximately 1 to 2 cm away from
the crease of your wrist.
5 Secure the wrist cuff with the
Velcro.
• If the wrist cuff is wrapped
too loose or tight, errors or
incorrect readings may result.
You may use your right wrist to measure your blood pressure.
However, your blood pressure may differ by about 10mmHg depending
on whether measured on your left or your right wrist, so ideally you
should measure your blood pressure on the same wrist each time.
To obtain accurate measurements
• Wrapping the cuff too loosely or too tightly may prevent correct
measurement.
• Sit up straight while taking the measurement.
English
- Eng 15 -
TIPS FOR OBTAINING ACCURATE MEASUREMENTS
Place a folded towel or similar
under your arm.
Your blood pressure varies according to your posture, the time of day
and a range of other factors. Ideally, you should measure your blood
pressure in the same posture at the same time every day.
English
Make sure that your posture is correct.
1
Sit up straight, take a deep breath and relax.
Place your palm facing up and
2
keep your fi ngers relaxed.
It is important to have the
3
cuff level with your heart.
- Eng 16 -
TIPS FOR OBTAINING ACCURATE MEASUREMENTS
To obtain correct measurements
• Do not clench your fi st tightly.
• Do not wrap the wrist cuff too loosely.
• Do not change the position of the
monitor.
• Do not move your body or talk during
measurement
English
- Eng 17 -
MEASURING YOUR BLOOD PRESSURE
1 Wrap the wrist cuff around your left wrist.
( See page 14 “HOW TO WRAP THE WRIST CUFF”.)
2 Make sure that your posture is correct.
English
( See page 16 “TIPS FOR OBTAINING ACCURATE
MEASUREMENTS”.)
3 Press the “START/STOP” switch to start measurement.
is displayed when a pulse is detected.
- Eng 18 -
MEASURING YOUR BLOOD PRESSURE
4 The measurement results are displayed.
Systolic blood
pressure
Irregular Heartbeat
(IHB) Indicator
Body Movement Indicator
Caution
Diastolic blood
pressure
Pulse
The Body Movement Indicator is displayed on the
measurement results display if you move your hand
or wrist during measurement, causing a substantial
pressure change to be detected.
• If the Body Movement Indicator is displayed,
measure your blood pressure again.
If an irregular heartbeat is detected during
measurement, the Irregular Heartbeat (IHB) Indicator
is displayed after measurement is completed.
• Measurement may not be correct if your heartbeat
fl uctuates greatly during measurement. If the
Irregular Heartbeat (IHB) Indicator is displayed,
measure your blood pressure again.
If the Irregular Heartbeat (IHB) Indicator
appears frequently, you are advised to
consult a doctor about your health condition.
- Eng 19 -
English
MEASURING YOUR BLOOD PRESSURE
5 Finishing measurement.
• Press the “START/STOP” switch to turn the monitor off.
English
AUTOMATIC POWER OFF FEATURE
• After taking the blood pressure measurement, pressing the “START/
STOP” switch will turn the monitor off. However, if you do not press
the switch, the monitor’s Auto OFF function will automatically turn
the monitor off after 3 minutes.
CALLING UP THE DATA STORED IN MEMORY
90 measurement results can be stored in the memory.
The average value is calculated automatically to help you manage your
daily health.
HOW TO CALL UP THE DATA
1 Press the “MEMORY” switch.
• “3A” indicating the average value appears on the left section
of the display. Then, the average value, based on the last three
measurements, is displayed. (“3A” and the average value do not
appear if there are two or fewer measurements stored in memory.)
- Eng 20 -
CALLING UP THE DATA STORED IN MEMORY
2 Each time you press the switch, the measurement data are
displayed in order from the most recent to the oldest.
The data number
is displayed before
the measurement
results.
The measurement results are displayed after the data number.
• The value stored in memory is numbered in the order of
measurements. For example, when 90 sets of data are stored in
memory, the data number 1 represents the latest data.
Data number: 1, 2, 3, ... ... 89, 90
©
The latest data©The earliest data
HOW TO DELETE THE DATA
1 Press the “MEMORY” switch.
2 While pressing the “MEMORY” switch, press and hold the
“START/STOP” switch for more than 3 seconds.
All the stored data will be deleted.
Press and
hold for 3
seconds
Deleted
A message
saying all the
data have been
deleted from
the memory is
displayed.
English
- Eng 21 -
ERROR INDICATIONS
DISPLAY MARK CONDITION/CAUSE
English
Appears when the wrist
cuff is wrapped too
loose.
Appears when your
wrist moved during the
measurement.; or
Appears when the cuff is
not wrapped correctly.
Appears when the
batteries have run out.
Appears when the pulse
rate falls outside the
measuring range (below
39 beats/min. or above
181 beats/min.)
The unit does not
function properly.
CORRECTIVE ACTION
Re-wrap the wrist cuff
snugly. Take another
reading, making sure
you remain still. (
See page 14 “HOW
TO WRAP THE WRIST
CUFF”.)
Re-wrap the wrist cuff
correctly. Take another
reading, making sure
you remain perfectly
See page 14
still. (
“HOW TO WRAP THE
WRIST CUFF”.)
Replace two alkaline
batteries with new
ones. (
13 “REMOVING THE
BATTERIES”.)
Re-wrap the wrist cuff
properly. Take deep
breaths to relax, and
measure again. (
See page 16 “TIPS FOR
OBTAINING ACCURATE
MEASUREMENT”.)
Contact the store where
it was purchased or
your local service center.
See page 25
(
“BEFORE REQUESTING
REPAIRS OR TESTING”.)
See page
- Eng 22 -
ABOUT “BLOOD PRESSURE”
What is blood pressure?
The heart is a pump that circulates blood throughout your body. Blood is pumped
from the heart at a constant pressure into arteries. This pressure is called the
arterial blood pressure and represents, in general terms, your blood pressure. Blood
pressure is indicated by several kinds of pressures, including the systolic pressure
that occurs when the heart pumps blood, and the diastolic pressure that occurs
when blood returns to the heart.
(Systolic) (Diastolic)
Left atrium
Artery
Left atrium
Artery
English
Left
ventricle
Your blood pressure changes all the time.
Your blood pressure differs according to your age, gender and a range of other
factors. It is likely to be affected by your biorhythm during the day and by your
posture, physical activities, mental activities, level of stress and even by the air
temperature. The blood pressure of a healthy person generally varies within a day.
The artery wall
expands.
Contraction
Left
ventricle
Normal state is restored to
the artery wall.
Dilation
[Example of blood pressure variations within a day]
Systolic blood
Sleeping
pressure
Diastolic blood
pressure
160
140
120
100
80
60
40
Blood pressure value (mmHg)
12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11
(Blood pressure values measured at fi ve-minute intervals through the day)
Time of day
● Bevan AT, Honour AJ, Stott FH. Clin Sci 1969;36:329–44.
- Eng 23 -
BLOOD PRESSURE Q&A
Q Why is the blood pressure measured at home different from that
measured by the physician or at a hospital?
A Your blood pressure may vary due to exercise, the ambient temperature
English
or your mental state. When you have a physician or nurse measure your
blood pressure, the pressure value is likely to be 10 to 20 mmHg higher
than usual due to anxiety and/or stress. Knowing what affects your blood
pressure helps you to better monitor your health.
Q Why does the blood pressure obtained vary with measurement?
A Our blood pressure is adjusted by automatic nerve function. Blood
pressure differs with every heart beat. We are likely to think that our
blood pressure is constant, but it varies if you take measurements
in repetition. Blood pressure is susceptible to the time of day, such
as morning and afternoon, season and atmospheric temperature. In
addition, blood pressure is easily affected by mental stress or emotional
ups and downs. It tends to increase when you feel tension or decrease
when you are relaxed.
Q What is the benefi t of measuring my blood pressure at home?
A Blood pressure measurements taken at home give reliable data as they
can be taken when you are in a stable and relaxed condition. Physicians
place considerable importance on blood pressure measurements taken
at home. You should measure your blood pressure at the same time
each day and record the variations in your blood pressure.
Always consult your physician for an interpretation of your
blood pressure readings and to determine the proper
treatment.
- Eng 24 -
BEFORE REQUESTING REPAIRS OR TESTING
Make sure to check the following before sending your blood pressure
monitor away to be tested or repaired.
Problem Checks Response
Display stays
blank when
you press the
“START/STOP”
switch.
Check whether the
batteries are dead.
Check whether the
batteries are installed
the right way round
and oriented
(
correctly).
Replace all the batteries
with new ones.
Load the batteries in the
correct direction.
English
No
measurements
can be taken.
Your blood pressure readings are
abnormally high or low compared with
those taken in hospital.
Other phenomena
Check whether the
measurement icon
is displayed.
Check whether the
cuff is attached
correctly.
Did you stay
calm during
measurement?
Note that blood pressure measurement may not
be possible for someone with an extremely weak
pulse or cardiac arrhythmia (irregular pulse).
- Eng 25 -
Attach the cuff properly.
Measure your blood
pressure again, making
sure to remain still.
See page 24.
Remove the batteries from
the unit and change them
with new ones.
SPECIFICATIONS
Model Number CH-657
Measurement system Oscillometric method
Display Digital display type
Wrist circumference range 13.5 to 21.5 cm
English
Measurement
range
Accuracy
Infl ation Automatic infl ation by internal pump
Rated voltage 3V DC
Exhaust Electromagnetic quick exhaust valve
Power supply 2 AAA batteries (LR03)
Battery duration Approx. 400 times
Operating
conditions
Storage
conditions
Memory Function Up to 90 measurements
Electric shock Protection Internal power unit
Safety Classifi cation
Mode of operation Continuous operation
Protection against ingress of water
Dimensions 69(W) x 70(H) x 15(D) mm
Weight Approx. 86g w/o batteries
Accessories
Pressure 0 to 280 mmHg
Pulse 40 to 180 pulse/min
Pressure ±3 mmHg
Pulse ±5% of reading
( : direct current)
Temperature 10°C to 40°C
Humidity 30% to 85% RH
Temperature -20°C to 60°C
Humidity 10% to 95%RH
Type B Equipment
IPX0
Set includes 2 AAA batteries (LR03) for the
monitor, Instruction Manual, Storage case
(180 mmHg,
once/day, 22°C)
- Eng 26 -
CITIZEN is a registered trade mark of Citizen Holdings Co., Japan.
CITIZEN es una marca registrada de Citizen Holdings Co., Japón.
Design and Specification are subject to change without notice.
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