1) The document provides instructions for use of the SENDO Primo aneroid sphygmomanometer kit for measuring blood pressure, including how to fit the cuff and stethoscope, take measurements, and understand blood pressure classifications. 2) Key steps to take a measurement involve placing the cuff on the upper arm and stethoscope over the brachial artery, inflating the cuff until 30 mmHg above normal blood pressure, and listening through the stethoscope as the cuff deflates to determine systolic and diastolic pressures. 3) The kit is guaranteed for 24 months against defects but not damage from misuse or repairs by unauthorized services.

1. P R I M O
INSTRUCTION MANUAL
Aneroid sphygmomanometer kit

2. Introduction
Thank you for purchasing SENDO Primo aneroid sphygmomanometer kit.
When used properly this apparatus will give you years of accurate measurement.
Unicoms ltd is dedicated to assuring product quality. We are ready to help at our
free telephone 0800 13456.
24 months guarantee.
Please read carefully the instructions before using the apparatus..
Fitting together the apparatus
Съединете тръбичките към манометъра и главата на стетоскопа.
PRIMO aneroid sphygmomanometer kit

3. Sit comfortably in a chair with your feet flat on
the floor. Place your left arm on a table at a
slight angle.
On the inside of the upper arm, ca 2,5 cm
above your elbow, you can feel your pulse with
your finger tips.
Slide the open cuff over your arm until the
lower edge is 2-3 cm away from the elbow.
Make sure that the stethoscope head is placed
over the artery.
Measurment instructions
1
2
3
4

4. Place your left arm on a table, so the cuff is a
level with your hart.
Make sure the valve is closed.
Inflate the cuff until the pointer is on the
gouge is 30 mmHg above your normal blood
pressure. If there are still noises in the
stethoscope, inflate to 200 mmHg first.
Slightly unscrew the valve. Proper deflation
rate is 2-3 mmHg per second.
As the cuff begins to deflate you must listen
carefully with the stethoscope. Note the
reading on the gauge as soon as you hear a
faint, rhythmic tapping or thumping sound.
This is the systolic blood pressure reading.
When your diastolic blood pressure value is
reached, the thumping sounds stops.
5
6
7
8
9
3 seconds

5. Classification of the blood pressure values
The blood pressure values vary during the day. On the graphic below it is shown
how the values could vary in one day for a 35 years old male.
Range
Hypotension
Normal range
Normal – border line
Hypertension
Diastolic Blood-pressure
Lower than 60
60-90
90 -100
Higher than 100
Systolic Blood-pressure
Lower than 99
100 -139
140-159
Higher than 160

6. Technical specifications
Common source of error
Common problem with the aneroid sphygmomanometers is blocking the
apparatus with hair and dust.
Keep the apparatus in a clean place away from hair and dust.
Please call 0800 13456 if you face any difficulties with your SENDO apparatus.
DO NOT TRY TO DISASSEMBLE AND FIX THE SPHYGMOMANOMETER!
Method
Measuring Range
Precision
Inflation
Deflation
OperationalTemperature / humidity
Storage temperature / humidity
Weight
Korotkof
Pressure: 20-280 mm.Hg.
Pressure: ± 3 mm.Hg
Pump
Push button valve
10 °C ~ 40 °C / 40-85%
5 °C ~ 50 °C / 10-95%
350 g
Malfunction
The sound
transmission is poor
The pressure
does not rise although
the bulb is pumping
The systolic and
diastolic blood
pressure can not be
measured on the gouge
Remed
1. Place the head over the artery
2. Repalce them carefully and wipe
with clean cloth or cotton.
1. Carefully close the valve.
2. Make sure the tubing is covering the
whole metal connector of the bulb.
1. Carefully open the valve to release
the air with deflation rate of 2-3 mmHg.
Possible reason
1.The head (chest piece)
is not placed over the
artery during measuring.
2.The ear pieces are
blocked with dirt.
1.The valve is not close.
2.The cuff is not properly
connected to manometer.
1.The air in the cuff is
released too fast.
For information and consultaitions: 0800 13456

7. Guarantee
The blood pressure monitor SENDO is guaranteed for 24 months. This guarantee
includes the instrument and the cuff.
In the event your SENDO blood-pressure monitor fails to operate due to
manufacturing or workmanship related defects in this period we will repair it free
of charge. The warranty does not cover damage caused by improper use; damage
caused by repairs made not in the authorized services; Damages caused by dust,
liquids, drops or stress on the mechanism.
 This apparatus contains highly sensible parts
 Keep the apparatus away from direct sun light, extreme temperatures
and humidity
 Do not drop or hit the apparatus
 Keep it away from dust
 Do not dissemble the apparatus
 Do not pierce the cuff, pomp or the tubing
 Do not pump the sphygmomanometer more than 300 mmHg
 Always deflate the cuff after use
 This apparatus is for home use, not for medical treatment and diagnosis
 Keep the apparatus in the caring case
 Calibration in licensed laboratories is recommended every 2 years
ATENTION
0123
Distributor and importer: UniComs, 90 Petar Dertliev Bld., Sofia, Bulgaria; tel. (+359 2) 925 13 50.
Wenzhou Honsun Industries andTrade,Wenzhou, Jeyang, PRC
Shanghai InternationalTrading Corp. GmbH, Eiffestrasse 80, 2537 Hamburg, GERMANY.