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Instruction manual for
Pulse Oximeter
(REF LTD800)
1. General description
Haemoglobin Saturation is percentage of HbO2
(Oxyhemoglobin), compounded with oxygen, in hae-
moglobin (Hb). In other words, it indicates the satu-
ration of HbO
2
in blood. It is a crucial physiological
parameter for Respiration System. Many respiratory
diseases can lead to decrease of SPO
2
saturation.
Moreover, such factors as organic automatic adju-
stment malfunction derived from anesthesia, side
effect of major operation and injures aroused from
physical check can also cause problems about SPO2
saturation variation, which contributed to such
adverse symptoms such as faint, vomit and feel
weakness and so on. What’s more, if can not get the
right remedy, it can lead to dangers to human’s life.
The Fingertip Pulse Oximeter with features of small
dimension, low power consumption, easy-to-use and
convenience for portable. As long as you put your
finger in the device which read data though a light-
sensitive probe, then the associated reading will be
displayed on the indicator. It is proved by clinical
trial Pulse Oximeter have outstanding precise and
could repeat to measure the SPO
2
more accurately
and stably.
2. Measurement principle
The principle of the pulse oximeter is based on the
fact that the colour of blood depends on the quanti-
ty of the Oxyhemoglobin. While the Oxyhemoglobin
is red, the colour of the non-saturated Hemoglobin
tends to blue. The hemoglobin changes its structu-
ral configuration when it gets involved in a chemical
reaction; each of these configurations presents a
different type of light reflection. The wave length
of 660nm corresponds to red colour of the Oxyhe-
moglobin ( HbO
2
), the non-saturated Hemoglobin
corresponds to the wave length of 940nm. Both of
the wave lengths pass through a blood sample and
show the percentage of HbO2. This percentage cor-
responds to the value of saturation (SpO
2
).
Diagram of operation principle
1. Glow and Infrared-ray Emission Tube
2. Glow and Infrared-ray Receipt Tube
3. Technical parameters
3.1 Display Format: LED display
Hemoglobin sturation Display SPO
2
: 35-99%
Pulse Ratio Display: 30-254 BPM
Pulse rate display: barograph
Battery Voltage Low Indication:
3.2 Power Requirements: 2 AAA sige 1.5V 3.3
3.3 Power Consumption: less than 40mA
3.4 Measurement Accuracy:
SPO
2
: +-2% between 80%-99%,
+-3% between 70% - 80%, <70% -no definition
Pulse rate: +-2 BPM between 30-235 BPM
3.5 Dimension:
length: 58mm
width:30mm
height:34mm
weight: 50g (including two AAA batteries)
4. Product properties
4.1 Easy to use.
4.2 Small dimension, light (total weight is
about 50g including batteries) and portable.
4.3 Low power consumption; included two AAA
batteries can last up to 30 hours.
4.4 Low voltage warning will be indicated on display
when battery voltage is too low and normal applica-
tion of the Oximeter might be influenced.
4.5 No signal can be tested, device will power off
automatically in 8 seconds.
5. Application field
You can use it in the field such as family, hospital,
and sports (do not use the device during exercises,
but can use it before or after exercises).
Attention: The product is not suitable to monitor
patient continuously.
6. Operation instructions
6.1 Installing two AAA batteries into battery
cassette before closing its cover.
6.2 Open the clamp shown as in the picture below:
6.3 Put one of your fingers into rubber hole of the
Oximeter (it is better to let your finger touch the
bottom) before releasing the clamp.
6.4 Press the switch button for one time on front
panel.
6.5 Do not move your body at the same time.
6.6 Read correspondent data from display screen.
Attention: When you put finger into the Oximeter,
your nail surface must be upward.
Attention: Use the medical alcohol to clean the
rubber touching the finger inside of Oximeter, be-
fore and after operation. (The rubber inside of the
Oximeter is medical rubber without toxin, and it is
not harmful to the skin).
7. Brief description of front panel
a) Power Switch
b) Low Voltage Lamp
c) Heartrate Burgraph Display
d) Hemoglobin Saturation
e) Heart rate
The length of the heart rate Bar indicates the inten-
sity of the pulse
8. Pieces of accessories
8.1 One hanging string
8.2 Two batteries
8.3 One User manual
9. Battery installations
9.1 Push the two AAA batteries into battery cassette in cor-
rect polarities.
9.2Push the battery cover horizontally along the arrow
shown as below.
Notes: Battery polarities must be correctly loca-
ted. Otherwise, might cause serious damage to the
device.
Please put or remove batteries in right order, or is
likely to damage the device bracket.
Please remove the battery if the Oximeter will not
be used for a long time.
10. Hang string installations
10.1 Thread thinner end of the hang lace through the
hanging hole. Thread thicker and of the lace through
the threaded end before pulling it tightly
11. Maintenance and storage
11.1 Replace the batteries timely when low voltage
indicator is on.
11.2 Clean surface of the fingertip Oximeter before it
is used in diagnosis for patients
11.3 Remove the batteries inside the battery casset-
te if the Oximeter will not be operated for a long
time.
11.4 It is better to preserve the product in a place
where ambient temperatures range from -10° e i
40°C and humidity range from 10 e 80%.
It is recommended that the product be kept in a dry
place. A damp ambient might affect its lifetime and
even might damage the product.
Notes: Please follow the articles of the local gover-
nment to waste with used batteries
11.5 Environment requirements:
Operation Temperature: 5 - 40°C
Storage Temperature: : -10 - 40°C
Humidity: 10 – 80%
12. Possible problems and resolutions
Declaration: EMC of this product comply with
IEC60601-1-1-2 standard.
13. Signal definitions
14. Guarantee
This device has 2-year warranty from the purchase
date which is certified by the receipt or invoice. The di-
stributor reserves the right either to repair or replace
necessary parts to correct defects in the materials or
workmanship without any charge. The warranty does
not apply to damage resulting from failure to follow the
operating instructions, accidents, abuse, alteration or
disassembly by unauthorized individuals. In the case
you need to get your device repaired and you fulfil the
conditions of warranty, send the device to the nearest
retailer together with the purchase receipt.
Problems Possible
reason
Solution
Spo
2
or PR can
not be shown
normally
1.Finger is
not plugged
correctly
2.Patient’s
Oxyhemoglo-
bin value is
too low to be
measured.
1.Retry putting in
the finger
2. Try some more
times, If you
can make sure
about no problem
existing in the
product.
Spo
2
or PR is
shown unstably
1.Finger might
not be plugged
deep enough
2.Finger is
trembling or
patient’s body
is in movement
status
1.Retry putting in
the finger
2.Try not to move
The Oximeter
can not be powe-
red on
1.Powerof
batteries might
be inadequate
or not be there
at all
2.Batteries mi-
ght be installed
incorrectly
3.The Oximeter
might be
damaged
1.Please replace
batteries
2.Please reinstall
the batteries
3.Please contact
with local
customer service
centre
Indication lamps
are suddenly off
1.The product
is automatical-
ly powered off
when no signal
is detected
longer than 8
seconds
2. Low battery
1.Normal
2.Replace the
batteries
“Error 3” ,
“Error 4” or
“Error 7”
1 Low power
2 Receiving or
emission tubes
shielded or
damaged.
3 Current
control circuit
malfunctions.
1 Please change
battery
2 Please contact
with local
customer service
center
0123
Distributed by:
http://www.morettispa.com
Beijing Choice Electronic Technology Co., Ltd
Shanghai International Hoiding Corp.
GmbH (Europe) Eiffestraße 80 20537 Hamburg Germany
Signals Definitions
The equipment is BF type
Attention: Please reference instruction
manual before operation
Hemoglobin saturation
Pulse rate or Heart rate
(Beat per Minute)
Low Voltage Indication
Serial No
%SpO
2
SN
BPM
MA LTD800 01 B
EC
REP
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