12. Measurement Procedures
Here are a few helpful tips to help you obtain more accurate readings:
• Blood pressure changes with every heartbeat and is in constant fluctua
-
tion throughout the day.
• Blood pressure recording can be affected by the position of the user, his
or her physiological condition and other factors. For greatest accuracy,
wait one hour after exercising, bathing, eating, drinking beverages with
alcohol or caffeine, or smoking to measure blood pressure.
• Before measurement, it’s suggested that you sit quietly for 15 minutes
as measurement taken during a relaxed state will have greater accuracy.
You should not be physically tired or exhausted while taking a measure-
ment.
• Do not take measurements if you are under stress or tension.
• During measurement, do not talk or move your arm or hand muscles.
• Take your blood pressure at normal body temperature. If you are feeling
cold or hot, wait a while before taking a measurement.
• If the monitor is stored at very low temperature (near freezing), have it
placed at a warm location for at least one hour before using it.
• Wait about 5 minutes before taking the next measurement.
1. Press the ON/OFF/START Key. All digits will light up, checking the display
functions. The checking procedure will be completed in 2 seconds.
2. After all symbols appear, the display will show a blinking “0”. The mon-
itor is ready to measure and will automatically inflate the cuff slowly to
start measurement.
3. When the measurement is completed, the cuff will exhaust the inside
pressure. Systolic blood pressure, diastolic blood pressure and pulse will
be shown simultaneously on the LCD screen with the date and time
appearing on alternating manner in every 4 second interval. The meas-
urement is then automatically stored.
This monitor will re-inflate automatically to approximately 220 mmHg if
the system detects that your body needs more pressure to measure your
blood pressure.
Note:
1. This monitor automatically switches off approximately
1 minute
after last key operation.
2. To interrupt the measurement, simply press the
ON/OFF/START
or
Memory key
; the cuff will deflate immediately.
3. During the measurement, do not talk or move your arm or hand
muscles.
13. Recalling Values from Memory
1. To recall stored blood pressure readings from memory, simply press the
Memory key. The last set of memorized readings will be displayed.
2. Another press of the Memory key will recall the previous set of readings.
3. All readings stored in memory will be displayed with its sequence number.
Note:
The memory bank can store up to 90 readings per memory zone.
When the number of readings exceeds 90, the oldest data will be
replaced with the new record.
14. Clearing Values from Memory
Press and hold the Memory key for approximately 5 seconds, then the data
in the memory zone can be erased automatically.
1. To adjust the date/ time in the monitor, press the
key. The display will
show a blinking number showing the hour.
2. Change the hour by pressing the
key. Each press will increase the
number by one in a cycling manner. Press the
key again to confirm
the entry, and the screen will show a blinking number representing the
minute.
3. Change the minute, and date as described in Step 2 above, using the
key to change and the
key to confirm the entries.
4. “0” will reappear as the Blood Pressure Monitor is ready for measurement
again.
15. Time Adjustment
16. Data Transfer to PC (Optional)
“Rossmax provides a free, integrated and user-friendly blood pressure
management software system which can be downloaded and installed on
your computer. You may purchase our special designed USB cable in order
to connect Rossmax’s blood pressure monitor and your PC. Please visit the
web site at http://www.rossmaxhealth.com for proceeding the download-
ing and installation process.
17. Troubleshooting
If any abnormality should arise during use, please check the following points.
EE/Measurement Error:
Make sure the L-plug is securely connected to the
air socket and measure again. Wrap the cuff correctly and keep arm steady
during measurement. If the error keeps occurring, return the device to your
local distributor or service center.
E1/Air Circuit Abnormality:
Make sure the L-Plug is securely connected
to the air socket on the side of the unit and measure again. If the errors still
occur, return the device to your local distributor or service center for help.
E2/Pressure Exceeding 300 mmHg:
Switch the unit off and measure
again. If the error keeps occurring, return the device to your local distribu-
tor or service center.
E3/Data Error:
Remove the batteries, wait for 60 seconds, and reload.
If the error keeps occurring, return the device to your local distributor or
service center.
Er/Exceeding Measurement Range:
Measure again. If the error keeps oc-
curring, return the device to your local distributor or service center.
No display when the ON/OFF/START key is pressed:
Re-insert the bat-
teries in the correct positions.
Note:
If the unit still does not work, return it to your dealer. Under no cir-
cumstance should you disassemble and repair the unit by yourself.
18. Cautionary Notes
1. The unit contains high-precision assemblies. Therefore, avoid extreme temperatures,
humidity, and direct sunlight. Avoid dropping or strongly shocking the main unit, and
protect it from dust.
2. Clean the blood pressure monitor body and the cuff carefully with a slightly damp, soft
cloth. Do not press. Do not wash the cuff or use chemical cleaner on it. Never use thin-
ner, alcohol or petrol (gasoline) as cleaner.
3. Leaky batteries can damage the unit. Remove the batteries when the unit is not used
for a long time.
4. The unit should not be operated by children so to avoid hazardous situations.
5. If the unit is stored near freezing, allow it to acclimate at room temperature before use.
6. This unit is not field serviceable. You should not use any tool to open the device nor
should you attempt to adjust anything inside the device. If you have any problems,
please contact the store or the doctor from whom you purchased this unit or please
contact Rossmax International Ltd.
7. For users diagnosed with common arrhythmia (atrial or ventricular premature beats
or atrial fibrillation), diabetes, poor circulation of blood, kidney problems, or for users
suffered from stroke, or for unconscious users, the device may have difficulty in deter
-
mining the proper blood pressure.
8. To stop operation at any time, press the ON/OFF/START key, and the air in the cuff will
be rapidly exhausted.
9. Once the inflation reaches 300 mmHg, the unit will start deflating rapidly for safety
reasons.
10. Please note that this is a home healthcare product only and it is not intended to serve
as a substitute for the advice of a physician or medical professional.
11. Do not use this device for diagnosis or treatment of any health problem or disease.
Measurement results are for reference only. Consult a healthcare professional for in-
terpretation of pressure measurements. Contact your physician if you have or suspect
any medical problem. Do not change your medications without the advice of your
physician or healthcare professional.
12. Electromagnetic interference: The device contains sensitive electronic components.
Avoid strong electrical or electromagnetic fields in the direct vicinity of the device (e.g.
mobile telephones, microwave ovens). These may lead to temporary impairment of
measurement accuracy.
13. Dispose of device, batteries, components and accessories according to local regula-
tions.
14. This monitor may not meet its performance specification if stored or used outside
temperature and humidity ranges specified in Specifications.
19. Specifications
Measurement Method : Oscillometric
Measurement Range
: Pressure: 40~250mmHg;
Pulse: 40~199 beats/ minute
Pressure Sensor
: Semi conductor
Accuracy
: Pressure: ±3mmHg; Pulse: ±5% of reading
Inflation
: Pump Driven
Deflation
: Automatic Pressure Release Valve
Memory capacity
: 90 memories
Auto-shut-off
: 1 minute after last key operation
Operation Environment : 10°C~40°C (50°F~104°F); 40%~85% RH
Storage Environment
: -10°C~60°C (14°F~140°F); 10%~90% RH
DC Power Source
: DC 6V four R06 (AA) Batteries
AC Power Source
: DC 12V, > 600mA
(Plug size: outer(-) is 3.8Ø, inner(+) is 1.3Ø)
Dimensions
: 145 (L) X 105 (W) X 75 (H) mm
Weight
: 384.5g (G.W.) (w/o Batteries)
Arm circumference
: 24~36 cm (9.4”~14.2”)
Limited users
: Adult users
: Type BF :Device and cuff are designed to provide
special protection against electrical shocks.
*Specifications are subject to change without notice.
20. EMC guidance and manufacturer’s declaration
Guidance and manufacturer’s declaration-electromagnetic emissions
The AK150f is intended for use in the electromagnetic environment specified below.
The customer or the user of the AK150f should assure that it is used in such an environment.
Emission test
Compliance
Electromagnetic environment-guidance
RF emissions CISPR 11
Group 1
The AK150f uses RF energy only for its internal function.
Therefore, its RF emissions are very low and are not likely to
cause any interference in nearby electronic equipment.
RF emissions CISPR 11
Class B
The AK150f is suitable for use in all establishments, including
domestic establishments and those directly connected to the
public low-voltage power supply network that supplies buildings
used for domestic purposes.
Harmonic emissions IEC 61000-3-2
Class A
Voltage fluctuations/flicker
emissions IEC 61000-3-3
Compliance
Guidance and manufacturer’s declaration-electromagnetic immunity
The AK150f is intended for use in the electromagnetic environment specified below.
The customer or the user of the AK150f should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment-guidance
Electrostatic
discharge(ESD) IEC
61000-4-2
± 6 kV contact
± 8 kV air
± 6 kV contact
± 8 kV air
Floors should be wood, concrete or
ceramic tile. If floors are covered with
synthetic material, the relative humidity
should be at least 30%
Electrical fast
transient/burst IEC
61000-4-4
± 2kV for power supply lines
± 1kV for input / output lines
± 2kV for power supply
lines
Not applicable
Mains power quality should be that of a
typical commercial or hospital environ
-
ment.
Surge IEC 61000-4-5 ± 1kV line(s) to line(s)
± 2kV line(s) to earth
± 1kV differential
mode
Not applicable
Mains power quality should be that of a
typical commercial or hospital environ
-
ment.
Voltage Dips, short
interruptions and
voltage variations on
power supply input
lines IEC 61000-4-11
<5% UT(>95% dip in UT) for
0,5 cycle
40% UT(60% dip in UT) for 5
cycles
70% UT(30% dip in UT) for 25
cycles
<5% UT(>95% dip in UT) for 5
s
<5% UT(>95% dip in
UT) for 0,5 cycle
40% UT(60% dip in
UT) for 5 cycles
70% UT(30% dip in
UT) for 25 cycles
<5% UT(>95% dip in
UT) for 5 s
Mains power quality should be that of a
typical commercial or hospital environ
-
ment. If the user of the AK150f requires
continued operation during power mains
interruptions, it is recommended that the
AK150f be powered from an uninterrupt-
ible power supply or a battery.
Power frequency
(50/60 Hz) magnetic
field IEC 61000-4-8
3 A/m
3 A/m
Power frequency magnetic fields should
be at levels characteristics of a typical
location in a typical commercial or hospital
environment.
NOTE: UT is the a.c. mains voltage prior to application of the test level.
Guidance and manufacturer’s declaration-electromagnetic immunity
The AK150f is intended for use in the electromagnetic environment specified below.
The customer or the user of the AK150f should assure that is used in such and environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment-guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 KHz to 80 MHz
3 V/m
80MHz to 2,5 GHz
3 Vrms
3 V/m
Portable and mobile RF communications equipment should
be used no closer to any part of the AK150f including
cables, than the recommended separation distance calcu-
lated from the equation applicable to the frequency of the
transmitter.
Recommended separation distance:
d = 1,2 √P
d = 1,2 √P 80MHz to 800 MHz
d = 2,3 √P 800MHz to 2,5 GHz
Where P is the maximum output power rating of the trans-
mitter in watts (W) according to the transmitter manufacturer
and d is the recommended separation distance in metres
(m).
Field strengths from fixed RF transmitters, as determined
by an electromagnetic site survey,
a
should be less than the
compliance level in each frequency range. b
Interference may occur in the vicinity of equipment marked
with the following symbol:
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
a: Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile
radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To
assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be consid-
ered. If the measured field strength in the location in which the AK150f is used exceeds the applicable RF compliance
level above, the AK150f should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the AK150f.
b: Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distance between
portable and mobile RF communications equipment and the AK150f
The AK150f is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the AK150f can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the AK150f as recommended below, ac-
cording to the maximum output power of the communications equipment.
Rated maximum out-
put power of transmit-
ter
W
Separation distance according to frequency of transmitter /
m
150 kHz to 80 MHz/d = 1,2
√P
80 MHz to 800 MHz/d = 1,2
√P
800 MHz to 2,5 GHz/d = 2,3 √P
0,01
0,12
0,12
0,23
0,1
0,38
0,38
0,73
1
1,2
1,2
2,3
10
3,8
3,8
7,3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres
(m) can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output
power rating of the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
OBM_IB_ AK150f_EN_ver1136
www.rossmaxhealth.com
Sole Distributor in Thailand
Circlife Co., Ltd.
125/8 Kanchanapisek Rd., Bangkhae,
Bangkhae, Bangkok 10160 THAILAND
CIRCLIFE
