Citizen CH-471B User Manual

TM

INSTRUCTION MANUAL

FOR

DIGITAL BLOOD PRESSURE MONIT OR

REF CH-471 B

IDENTIFICATION OF PARTS

English

Diastolic blood pressure
display section

Pulse display
section

Cuff Tube Air connector

Systolic blood pressure display section

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Start switch

Power switch

Battery
cover

— Eng 1 —

SPECIFICATIONS

Measuring method: Oscillometric system
Indication: Digital display, Height: 14.5mm
Measuring range: Pressure; 0 ~ 280mmHg, Pulse; 40 ~ 180 beat/min.
Accuracy: Pressure; ±3mmHg, Pulse; ±5%
Inflation: Automatic inflation at suitable level by internal pump
Deflation: Electromagnetic valve
Memory function: 1 data
Power source: 4 “AA” (LR6) Alkaline batteries
Battery life: Approx. 700 times/LR6 (once a day, 170mmHg, room temp. 22°C)
Rated voltage: 6V DC
Working temp. & humidity: +10°C ~ +40°C, 30 to 85%RH
Storage temp. & humidity: –20°C ~ +60°C, 10 to 95%RH
Outside dimensions: 171mm(W) × 125mm(D) × 65mm(H)
Weight: 440g (Apparatus and batteries)
Electric shock protection: Type B equipment
Accessories: Preformed Cuff, 4 “AA” (LR6) batteries, Instruction manual

*Specifications and designs may be changed without notice in the event of improvements being made.

CLEANING METHOD OF CUFF

After cleaning the cuff with a neutral detergent, lightly rinse it
with water and let it dry in the air. Hard rubbing or washing in a

GENERAL REMARKS

General Remarks on blood pressure measurement

• If the cuff is to be deflated quickly , depress “POWER” s witch.

• The attached cuff is suited for an arm circumstance of 22cm
to 32cm.

• When attaching the cuff, rubber cuff hose should be placed
on the inside of your arm on top of the arterial.

• Self measurement is no therapy! In no case may you change
the dosage of medication prescribed by your physician.

• In operation for blood pressure measurement, you should
urinate and should remain relatively still for 10 to 15 min­utes prior to measurement.

• Exercise, eating and drinking, smoking, etc., prior to mea­surement may affect the results.

washing machine will cause air leakage. Also, be careful not to
get water into the air hose.

• The blood pressure varies constantly throughout the day.
Measurement should be made regularly at the same time
each day.

• Do NOT be impressed by the results of one measurement.
Keep a record of blood pressure variations. Many readings
tell a story.

• Emotional stress may tend to cause pressure to rise.

For proper measurement of blood pressure

• Take a deep breath five or six time and then relax before
measuring blood pressure. If you are tense when taking
the measurement, you will not get a valid reading.

— Eng 2 —

• Blood pressure will be elevated when you are in a worri­some or irritated state, suffering from lack of sleep or con­stipation, or after exercise or a meal.

• Putting on the cuff is one of the most important tasks for
ensuring proper measurement of blood pressure.
the cuff around the arm and tighten it so that one
finger may be inserted between the cuff and arm.

• Do NOT measure blood pressure after bathing or drinking.

• When you feel like relieving yourself, you should do so be­fore measuring blood pressure.

• Measure blood pressure where the room temperature is

Wind

PRECAUTION FOR USE AND MAINTENANCE

about 20°C. Do NOT measure blood pressure when it is
too cold (below 10°C) or too hot (above 40°C) in the room.

• Do NOT measure blood pressure immediately after drink­ing coffee or tea or smoking.

• Measure blood pressure with a relaxed and quiet posture.
Keep the center of the cuff at the level of your heart, and
do NOT move your arm or talk during measurement.

• Do NOT keep on measuring so many times, as your arm
will have built up congestion of blood, and you will not get a
valid reading.

English

Precautions for use

• If you suffer from heart disease, high blood pressure or
other circulatory disease, please consult your doctor first.

• If you feel abnormal pressure of the cuff during use or any
other irregularity, reduce the pressure by immediately
switching off the power or removing the batteries and con­sult the sales outlet where purchased.

• If you think the measured value is abnormal or if measur­ing makes you feel unwell, discontinue use and consult y our
doctor.

• Measurement of blood pressure may not be possible for
someone with a weak pulse or arrhythmia.

• Congestion, swelling, etc. may occur in some people.

• If blood pressure is measured repeatedly, an accurate
result will not be achieved. An interval of about 10 minutes
should be allowed.

• The memory is erased if the batteries are removed for re­placement, etc. and a record should be kept of any neces­sary data.

Precautions for maintenance

• Do NOT store the blood pressure monitor where it will be
exposed to direct sunlight, high temperature (over 60°C),
low temperature (below –20°C), high relative humidity (over
95%) or in a dusty place.

• Do NOT expose the blood pressure monitor to under force
or vibration, or drop it.

• Remove the battery/batteries when not in use for a long
period.

• Do NOT disassemble the apparatus.

• Do NOT bend the cuff or air hose unnecessarily.

• NEVER wipe the blood pressure monitor with thinner or
benzene, as they may damage it.

• When the monitor is very dirty, wipe it clean with a cloth
moistened with Sterilizing alcohol or a neutral detergent,
and then wipe it with a dry cloth. Do NOT use thinner or
benzene.

Nature and frequency of maintenance:

This products 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.

Protect the nature environment:

Please help protect natural environment by respecting national
and/or local recycling regulations when disposing of the batter­ies and the products at the end of their useful lives.

Reference European standard:

This products complies with EC instructions 93/42/EEC (Medi­cal Device Directive) and with the follo wing standards: EN 1060­1: 1995 “Noninvasive Sphygmomanometers, Part 1 General
Requirements” and EN 1060-3: 1997 “Noninvasive Sphygmo­manometers, Part 3 Supplementary Requirements for Electro­mechanical Blood-Pressure Measuring Systems.

— Eng 3 —

Manufacturer:

Name: Premier Precision Ltd.
Address: Block E, G-H, 6

Factory Building,
73-75 Hoi Yuen Road, Kwun Tong, Kowloon,
Hong Kong

th

floor, Phase 2, Yip Fat

European Representative:

Name: WvW elektronische Geräte Vertrieb GmbH.
Address: Robert-Koch-Straße 20, D-80538 München,

GERMANY

MEASUREMENTS

1. Turn Power On

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Insert the air connector from the cuff into the tube socket at
the mainframe until it is tightly connected.

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POWER

Press on the Power switch for power on.

If the Power switch is pressed, the
mark of “Q” lights up and the buzzer
sounds for one second.

After the buzzer sounds, the last­measured systolic blood pressure,
diastolic blood pressure and pulse
are indicated for about 2 seconds.

Then, the buzzer sounds three times
at the interval of 100ms, and the
meter is automatically set to the state
to wait for pressurization.

2. Attaching of Arm Cuff and Posture During
Measurement

Unfasten and open the cuff as shown
in the figure.

Wind the arm cuff around the left upper arm tightly so that
bottom edge of the cuff is positioned about 2 – 3 cm above
the elbow joint.

— Eng 4 —

2〜3cm

START

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• When you will wind the cuff, please wind the cuff next
to the skin of possible.
(If measurement is made by rolling the shirts or jacket
up over the arm, this will constrict the upper arm and
prevent accurate measurement.)

• Rubber cuff hose should be placed on the inside of your
arm on top of the arteria as figure.

• Please make sure that the cuff is fastened tightly. Note
that uneven cuff winding will prevent proper measure­ment.

3. To Start the Measurement

Press the “START Switch”.
The arm cuff pressurizes when “ST ART Switch” is pressed.

After the “START Switch” is pressed,
the pressure is automatically height­ened to the level for measurement of
the blood pressure.

When the pressure lowers by
15mmHg after pressurization stops,
the mark of “Q” lights up.

If the pulse is recognized, the pres­sure is shifted to the diastolic blood
pressure display section and
changed over, synchronized with the
pulse.

English

Rest the elbow on a table so that the section of the upper
arm is at the height of the heart. Relax the lower arm across
the table and remain still, since movement - artifacts may
falsify the measuring result.
Make measurements in either a seated or reclining pos­ture with the palm turned upward.

The buzzer sounds for two seconds,
then the systolic blood pressure, di­astolic blood pressure and pulse are
indicated and the air is discharged.
The measured data are registered
automatically , as long as the y are not
error.

4. Turn Power OFF

Press the “POWER Switch” to turn off.

— Eng 5 —

5. Subsequent Measurement

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When a measurement need to be made again, the time
between two measurements must be at least ten minutes.

6. Automatic Power OFF Function

If this is left on after measurement an “Automatic Power­OFF Function” turns the power off after approximately 3
minutes. To continue measurement press the “POWER
Switch” turning the units on.

7. Battery Replacement

If the batteries become weak, the “ ” mark will appear
in the display, indicating that batteries should be replaced
with new one. Dispose of the dead batteries properly to
preserve the environment.

Remove the battery cover at mainframe and replace the
four pieces of batteries.
Type “AA” battery or equivalent is suitable for this blood
pressure monitor.

Batteries are dead.

Battery will be dead soon.
This is rough indication and dispersed,
depending on batteries.

Batteries are normal.

— Eng 6 —

*Depending on the battery,

play.

may not be on the dis-

DESCRIPTION OF DISPLAY MARKS

DISPLAY MARK CONDITION/CAUSE CORRECTIVE ACTION

English

Measurement is begun, but the pressure was in­sufficient.

Appears when the blood pressure could not be
measured accurately. (Some noises were de­tected by the movement of arm during measure­ment.)

Appears when the pulse could not be measured.

Appears when the batteries become weak.

Device has a trouble.

Repeat measurement again.

Repeat measurement again.

First, exhaust air from the cuff, reapply the cuff
properly and remeasure.
Repeat measurement again.

Replace the batteries.

Ask purchased shop.

— Eng 7 —

●CITIZEN is a registered trademark of Citizen Watch Co., Japan.

Consumer Electronics Division

CBM Bldg. 5F, 5-68-10, Nakano, Nakano-ku, Tokyo 164-0001, Japan
Phone: [phone] Fax: [phone] E-mail: [e-mail]