GERATHERM GT-5907 User manual

GB
Digital Blood Pressure Monitor
for the upper arm
INSTRUCTION MANUAL
GT-5907

GB
2828
Designated use
This unit uses the non-invasive measurement method in
order to measure systolic and diastolic blood pressure, as
well as the heart rate.
The measurement is conducted on the upper arm.
All values can be read on an LCD screen.
This unit has been developed for home and professional
use and should only be used by adults. The cuff circumfer-
ence is 22 to 30 cm (8.7 to 11.81 inches).
Designated use ......................................................... 28
Precautionary measures .......................................... 29
Warranty ..................................................................... 31
Information you should know before
operating the unit ...................................................... 31
About the unit
Function description ................................................ 32
Explanation of displays............................................ 33
Preparation for use
Installing/Replacing batteries .................................. 34
Attaching the pressure cuff ..................................... 34
Posture during measurement.................................. 35
Operations
Setting the clock and date....................................... 36
Measuring blood pressure ...................................... 37
WHO classification of blood pressure
for adults ................................................................. 39
Recalling memories................................................. 40
Erasing memories .................................................. 40
Care and maintenance............................................... 41
Disposal ..................................................................... 43
Error messages ......................................................... 43
Specifications............................................................. 45
Quality standard ........................................................ 46
Symbol index ............................................................. 46
Annex ......................................................................... 47
Contents

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Precautionary measures
29
• This manual and the product are not substitutes for visit-
ing the doctor.
Neither the information contained herein nor this product
may be used to diagnose or treat health problems, or to
prescribe drugs. If you have or suspect that you have a
medical problem, please seek immediate advice from
your doctor.
• Do not conduct any measurements if the temperature is
low (below +5 °C) or high (over +40 °C), or if the relative
humidity is over 90 %, as this can lead to inaccurate read-
ings.
• Wait 30 to 45 minutes, before taking a measurement if you
have just had a caffeinated drink or a cigarette.
• Relax for at least 5 to 10 minutes before taking a measure-
ment.
• Please wait 3 to 5 minutes between measurements, so
that your blood vessels can return to the state they were
in prior to measurement. You may have to adapt the wait-
ing time to your personal physiology.
• It is recommended that you use the same arm for each
measurement (preferably the left) and take the measure-
ment at about the same time every day.
• Sit down comfortably with your elbows placed on the table
and both feet on the ground. Please do not interlock your
legs during the measurement.
• Wrap the cuff snug around your upper arm and lay your
arm on a flat surface at the same level as your heart.
• Take the measurement at room temperature in a quiet and
stress-free environment.
• The unit should not be moved or shaken during the meas-
urement. Please do not speak during the measurement.
• Please keep in mind that blood pressure naturally varies
depending on the time of day and is affected by many
different factors. Blood pressure is usually highest at work
and reaches its lowest level during the sleep phase.
• Blood pressure measurements should be assessed by a
doctor or trained healthcare professional who is familiar
with your medical history. If you use the unit and regularly
record the results, please keep your doctor informed with
regard to the ongoing changes in your blood pressure.
• If you suffer from a cardiovascular disease (such as
atherosclerosis), diabetes, a liver or kidney disease, se-
vere hypertension or peripheral circulatory disorders, etc.,
please consult your doctor before using this unit.
• This unit is not suitable for use by people with cardiac
arrhythmias.

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• The blood pressure measurements conducted with
this unit are equivalent to measurements obtained by a
trained observer in accordance with the values achieved
using the cuff/stethoscope auscultation method and are
within the specified EN 1060-4 standard limits.
• If the cuff causes any discomfort during the measurement,
press the “START” button to turn off the unit immediately.
• If the pressure is over 300 mmHg and the cuff does not
deflate automatically, pull off the Velcro strap to detach
the cuff.
• Do not use this appliance on infants, children or persons
who cannot express their own intentions.
• To avoid accidental strangulation, keep the product away
from children and do not place the hose around the neck.
• Measuring too frequently may result in circulatory disor-
ders, which can cause unpleasant sensations such as lo-
calised bleeding under the skin or temporary numbness in
your arm. These symptoms do not usually last long. How-
ever, if you have not recovered after some time, please
consult your doctor.
• Please take into consideration the electromagnetic com-
patibility of the unit (e.g. disruptions to the power supply,
radio frequency interference, etc.) see annex. Please
only use the unit indoors. To avoid inaccurate results due
to electromagnetic interference between electrical and
electronic equipment, please do not use the unit near
mobile phones or microwave ovens. In the case of de-
vices whose maximum power exceeds 2 W, the minimum
distance from your blood pressure monitor should be 3.3
metres.
• The unit is not waterproof. Never immerse this instrument
in any liquids.
• Do not use the instrument if you think it is damaged or if
you notice anything unusual.
Precautionary measures

31
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Warranty
What is blood pressure?
A force is created by the heart as the ventricleforcibly ejects
blood into the blood vessels and through the vascular sys-
tem. Another force is created by the arteries as they resist
the blood flow. Blood pressure is the result of these two
forces.
What are systolic and diastolic pressures?
Systolic pressure is the highest pressure at the height of
the heart‘s contraction. Diastolic pressure is the lowest
pressure when the heart is resting.
Is my blood pressure normal?
See the blood pressure classification chart released by the
WHO (World Health Organization) on page 39 for evalua-
tion of your blood pressure level.
What about low blood pressure?
In general, a lower blood pressure reading is better unless
causes unpleasant symptoms such as fainting and/or light-
headedness.
The warranty for this blood pressure monitor is valid for any
error on the part of the manufacturer under normal use for
3 years from the date of purchase. If your unit does not
function properly due to defective parts or assembly, we will
repair it free of charge.
With the exception of the battery and cuff, all parts of the
unit are subject to this warranty. Damage caused by im-
proper handling of your unit is not guaranteed.
We recommend that the accuracy of the unit be checked
after 2 years from manufacturing date by an authorized
laboratory.
This checking procedure is not a service provided under
the warranty.
Information you should know before
operating the unit

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3232
The following factors will influence blood pressure meas-
urement results and cause variations:
Information you should know before
operating the unit
mmHg
Fluctuation and variation in blood pressure
The following chart shows possible blood pressure fluctua-
tions during a 24-hour period.
Function description
Based on oscillometric method and silicon integrate pres-
sure sensor technology, blood pressure and heart rate can
be measured automatically and non-invasively which helps
to ease the operation. The Geratherm med control have 2 x
99 memories with date and time display, a big LCD screen
and arrhythmia detection. The RCC (radio controlled clock)
function can automatically receive the German radio clock
signal (DCF77) to adjust the clock accurately. And the col-
our LED for indicates the class according to WHO of your
blood pressure. Also the monitor has the function of aver-
aging the latest three records.
About the unit
diastolic
systolic
• Bathing
• Breathing
• Conversation
• Drinking alcohol
• Exercise
• Moving
• Mental tension
• Eating
• Temperature changes
• Thoughts
• Smoking etc.

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About the unit
33
MEM
START
The cuff is designed to fit arm sizes between
22 and 30cm (8.7 to 11.81 inches.)
Explanation of displays
access for power supply
cuff
On/Off Button
LCD Display
Memory
Date/
Time
Systo-
lic
Pulse
Diasto-
lic
Low Batterie
Memory
RCC
Group Irregular Heart Beat
(IHB)
WHO
classi-
fication

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34
Preparation for use
Installing/ Replacing batteries
1. Insert the batteries into the battery
compartment matching correct polari-
ties “+” and “-”.
2. Replace all batteries if the low battery
indicator appears.
3. Remove the batteries if the unit will
not be used for a long period of time.
4. REMOVE all of the BATTERIES
when utilizing an optional AC adapter.
Note:
It is recommended that the same type of alkaline bat-
teries be used to avoid incompatibility. Rechargeable
batteries with a voltage of 1.2V are not suitable for
this product.
Keep batteries away from small children. Do not
throw batteries into fires: they could explode.
Attaching the pressure cuff
1. Wrap the cuff around the left
arm. The arm should be bare.
2. Fasten the cuff. Don’t pull it
too strongly or make the cuff
too tight. The edge of the cuff
should be approximately 1 inch
from the crease of your elbow.
2. Attach the cuff on the right arm
as shown in the figure if it is not
possible to measure on the left
arm.

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Posture during measuring
1. Sit upright and ensure that
the cuff is at heart level. Re-
lax and retain a natural pos-
ture during measurement.
2. Measure and record blood
pressure at the same time every day to establish your
blood pressure pattern.
Preparation for use
AC adapter (accessory)
Use the device only with a medical approved stabi-
lized AC adapter (6V, DC, 600mA).
Note:
1. No batteries are required during operation using
the AC adapter.
2. If AC adapter power is interrupted during measure-
ment, the unit must be reset by disconnecting the
AC adapter from the unit.
3. Only use medical approved adapters that comply
with the specifications in this manual. Using other
adapters could cause damage your blood pres-
sure monitor.

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36
Operations
Setting the clock and date
1. Clock Mode
Once you install the batteries, with two “beep”, the LCD
will display the time and date by turns. At the same time,
the machine enters the Radio Controlled Clock Mode with
the RCC symbol twinkling. After the RCC receiving, the
machine enters the Clock Mode and the LCD displays the
time and date by turns. And the COLOUR CHANGE LED
will twinkle with the colour changed in random turn.
2. Radio Controlled Clock(RCC) Receiving
a. Initial receiving:
Once you install the battery, the machine enters the
RCC Receiving Mode. The RCC symbol twinkles during
the receiving process. If clock data received, the time
and date will be adjusted automatically. And then enter
the Clock Mode. If no clock data received, the machine
enters Clock Mode and keeps the time and date un-
changed.
When the machine is in the RCC Mode, you can skip
RCC receiving and enter the Clock Mode by pressing
“START” button.
b. Forced RCC Receiving
When the machine is in Clock Mode, keep on press-
ing both the button “START” and “MEM” at the same
time for two seconds, you will enter forced RCC mode
and the RCC symbol is twinkling. If clock data received,
the time and date will be adjusted automatically. And
then enter the Clock Mode with two “beep”. If no clock
data received, the machine enters Clock Mode with long
beep and keeps the time and date unchanged.
You can skip forced RCC Mode by pressing the button
“START”. Then the machine enters the Manual Clock Ad-
justing mode.
c. Periodical receiving
The machine will automatically receive the RCC signal
at the time 2:05 and 14:05 every day. You can skip the
receiving process by press the button “START” to enter
clock mode.

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Measuring blood pressure
a. After your body is in a comfortable
position, press the “START” button.
After a long “beep”, BPM will verify
itself with LCD display all automati-
cally, and the COLOUR CHANGE
LED will lighten with 3 colours by
turn (picture 1).
b. Then the LCD twinkle the current group sign and show
the total of memories in this group. Now you can mod-
ify the current group number by pressing the “START”
button, and confirm the current group by pressing the
“MEM” button.
pic. 1
Operations
3. Manual Clock Adjusting
Normally, the time and date can be adjusted by RCC
signal automatically. But you also can try manual clock
adjusting if no RCC signal or weak signal.
a. When the machine is in Clock Mode, press the “START”
and “MEM” button at the same time (abt. 2 sec.), the
machine enters Forced RCC Receiving mode, then
press “START” button, the machine enters manual
Clock Adjusting Mode.
b. The number of year will twinkle first. Press “START”
button continuously, the numbers of month, day, hour
and minute will twinkle in turn. While the number is twin-
kling, press “MEM” button to increase the correspond-
ing number. Keep on pressing the button “MEM”, the
number will increase fast.
c. You can exit the Clock Adjusting Mode by pressing but-
ton “START” when the number of minute is twinkling,
then enter the Clock Mode.
d. When you change the batteries, the clock will be reset.
You can readjust clock or let the monitor modifying the
clock by RCC automatically.

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c. Once you choose the group, and
if it already has memory, LCD will
show the latest result with the LED
indicator (picture 2).
If machine does not have memory
before, the LCD will show six “0”.
d. One second later, LCD shows a
single “0”. While the “down arrow”
does not twinkle until the air pres-
sure is stable, and then it begins to measure automati-
cally.
e. Then the monitor begins to pressurize automatically.
During the measurement, the current pressure will dis-
play on the LCD, and the bars will automatically rise up
or fall down with the current pressure in the cuff. The
heart sign will glimmer with the heartbeat during the
pressure are falling down.
f. After measurement, the result of
systolic, diastolic and pulse rate
will all display on LCD. And irregu-
lar heartbeat symbol and blood
pressure classification indicator
will twinkle (picture 3). The result
will be automatically memorized by
itself. And the COLOUR CHANGE
LED will also indicate the blood
pressure classification.
g. During the measurement, you can turn off the monitor
by press the “START” button.
h. Pressing “START” button after measuring, machine will
be turn off, or it will be automatically shut down after 1
minutes of none use.
Note:
If the symbol “ ” appears, it means the unit has
detected irregular pulse during measurement. If the
symbol appears regularly please consult a qualified
physician for professional advice.
Operations
pic. 2
pic. 3

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Operations
WHO classification of blood pressure for adults
Please note that other risk factors (e.g. diabetes,
obesity, smoking, etc.) need to be taken into con-
sideration and may affect these figures. Consult with
your physician for accurate assessment.
diastolic pressure mmHg
systolic pressure mmHg
Severe Hypertension (Grade 3)
Moderate Hypertension (Grade 2)
Mild Hypertension (Grade 1)
Optimal
Normal
High - Normal
Blood pressure
classification
Systolic BP
mm HG
Diastolic
BP mm Hg
Color
indica-
tor
Optimal < 120 < 80 Green
Normal 120 – 129 80 – 84 Green
High – Normal 130 – 139 85 – 89 Yellow
Stage 1
Hypertension 140 – 159 90 – 99 Red
Stage 2 Hyper-
tension 160 – 179 100 – 109 Red
Stage 3 Hyper-
tension >= 180 >= 110 Red

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40
Operations
Recalling memories
a. Under the clock-displaying mode, press button “MEM”
will enter the mode of recalling memories. LCD will
show how many results it has in the current group. Now
you can modify the current group number by pressing
the “START” button, and confirm the current group by
pressing the “MEM” button.
b. When the group is selected, the average of last three
records will be displayed. If machine does not have
memory before, the LCD will show four “0”.
c. After that the latest result will be displayed, which is 01
for memory number. The time which you measured will
also be displayed. Continuously press the “MEM” but-
ton, previously memories will show by turns.
d. All memories have the WHO classification and the COL-
OUR CHANGE LED will also indicate the blood pres-
sure classification.
e. If it has no memory (or all memories have been deleted),
then LCD will show “0” for systolic, diastolic, and show
“00” for the numbers of memory, heart rate.
f. Press “MEM” button again after the last memory, the
machine will power off. Under the memory-displaying
mode, it will be automatically power off after 1 minute
of none use. Or you can press “START” button to shut
down the machine.
Erasing memories
When it displays one memory (no matter which memory),
holding on pressing “MEM” button for three seconds, all
memories will be deleted with three “beep”. LCD will show
the “- -” before you release the button, then it comes to the
mode without memory.

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Care and maintenance
Do not drop the unit. It is
not shock-proof.
Do not modify or disassem-
ble the unit or the arm cuff.
Do not twist the arm cuff.
Use a cloth moistened with
water or neutral detergent
to clean the body of the unit
and then wipe it dry.

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42
Avoid thinning agents,
benzine, and other harsh
cleaners.
Keep the unit in a suitable
place.
Avoid high temperatures,
direct sunlight, high humid-
ity level, and dust.
Remove the batteries if the
unit will not be
used for a long time.
Do not press the START
button if the cuff has not
been properly wrapped
around the arm.
Care and maintenance
It is recommended the cuff should be disinfected 2 times
every week if needed (For example, in hospital or in cli-
nique). Wipe the inner side (the side contacts skin) of the
cuff by a soft cloth squeezed after moistened with Ethyl al-
cohol (75-90%), then dry the cuff by airing.

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Disposal
Abnormality Reason Checkout
LCD Display
shows abnor-
mal result
The cuff position was
not correct or it was
not properly tightened
Apply the cuff
correctly and try
again
Body posture was not
correct during testing
Review the
“BODY POS-
TURE DURING
MEASURE-
MENT” sections
of the instructions
and re-test.
Speaking, arm or
body movement, an-
gry, excited or nerv-
ous during testing
Re-test when
calm and without
speaking or
moving during
the test
Irregular heartbeat
(arrhythmia)
It is inappropriate
for people with
serious arrhyth-
mia to use this
blood pressure
monitor.
LCD shows
low battery
symbol
Batteries low Change the
batteries
Observe the applicable regulations when disposing of the
device and batteries. This product must not be disposed of
together with domestic waste.
All users are obliged to hand in all electrical or electronic
devices, regardless of whether or not they contain toxic
substances, at a municipal or commercial collection point
so that they can be disposed of in an environmentally ac-
ceptable manner.
Please remove the batteries before disposing of the device/
unit.
Do not dispose of old batteries with your household
waste, but at a battery collection station at a recy-
cling site or in a shop.
Error messages

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44
LCD shows
“Er 0”
Pressure system is
unstable before meas-
urement. Don’t move
and try again.
LCD shows
“Er 1”
Systolic pressure
detect fail
LCD shows
“Er 2”
Diastolic pressure
detect fail
LCD shows
“Er 3”
Pneumatic system
blocked or cuff is too
tight during inflation Place the cuff
correctly and
try again
LCD shows
“Er 4”
Pneumatic system
leakage or cuff is too
loose during inflation
LCD shows
“Er 5”
Inflation above
300 mm Hg
Measure
again after
5 minutes. If
the monitor is
still abnormal,
please contact
the local
distributor or
the factory.
LCD shows
“Er 6”
Pressure is over
15 mm Hg for longer
than 3 min. At the start
of measurement the
pressure reading must
be below 15 mm Hg.
LCD shows
“Er 7”
EEPROM accessing
error
LCD shows
“Er 8”
Device parameter
check error
LCD shows
“Er A” Span error
BPM no
response when
you press
button. BPM
hang
Incorrect operation or
strong electromagnetic
interference
Take out bat-
teries for five
minutes, and
then reinstall
all batteries.
Error messages
Technical alarm:
Should the recorded blood pressure (systolic or diastolic)
lies outside the limits specified in “Specifications” the tech-
nical alarm will appear on the display indicating either “HI”
or “Lo”. You should seek medical assistance and check the
accuracy of your procedure.
The limit values for the technical alarm are factory set and
cannot be adjusted or deactivated.
The signal shown on the display will disappear automati-
cally after about 8 seconds.

45
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Specifications
Model No. GT-5907
Display System Liquid Crystal Display
Measuring Method oscillometric method, automatic
air inflation and measurement
Power Source 4 alkaline “AA“ type batteries
(1.5V) or AC adapter (6V, DC,
600mA)
Measuring Range blood pressure measuring
range: 0 to 300 mmHg
Heart pulse rate range:
40 to 180 pulse beats /min
Accuracy ±3mmHg (blood pressure)
±5% (pulse rate)
Memory 2 x 99 times with time and date
displaying
Low Battery Indicator yes
Auto Power-Off after 1 minute
Battery Life Approx.200 measurements
IP Classification IPX0 (no protection)
Cuff size 22 to 30 cm (8.7 to 11.81 inches)
Operating Environment +5°C to +40°C; RH ≤90 %
Storage Environment -20°C to +55°C; RH ≤90 %
Dimensions 160mm x 115mm x 69mm
Weight 364 g (monitor) +90 g (batteries)
Specifications are subject to change without notice for
purposes of product improvement.

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46
Quality standard
Geratherm®is certified in accordance with Council Direc-
tive 93/42/EEC and EN ISO 13485 and is entitled to affix
the CE-mark CE 0197 (Notified Body: TÜV Rheinland LGA
Products GmbH).
The blood pressure monitor conforms to
• EN 1060-1 (Non-invasive sphygmomanometers part 1:
General requirements) and
• EN 1060-3 (Non-invasive sphygmomanometers part
3: Supplementary requirements for electromechanical
blood pressure measuring systems)
• EN 1060-4 Non-invasive sphygmomanometers, Part 4:
Test procedures to determine the overall system accu-
racy of automated non-invasive sphygmomanometers
Symbol index
Follow instructions
for use Type BF Equipment
Keep dry Batch code
(mm/yyyy; month/year)
Store at a max. relative
humidity of 90 % Serial number
Store between -20 °C
and +55 °C Manufacturer
The device must not
be disposed of with
household waste.
Caution! Read the
instruction manual!
SN
90%
-20°C
+55°C