Contec CMS50D User Manual

Instructions to User
Dear users, thank you for purchasing the Acc U Rate® CMS 50D Pulse Oximeter.
In case of modifications and software upgrades, the information contained in this document is subject to
change without notice.
The Manual describes, in accordance with the Pulse Oximeter's features and requirements, main structure,
functions, specifications, correct methods for transportation, installation, usage, operation, repair, maintenance
and storage, etc. as well as the safety procedures to protect both the user and equipment. Refer to the respective
chapters for details.
Please read the Manual very carefully before using this equipment. These instructions describe the operating
procedures to be followed strictly. Failure to follow these instructions can lead to measurement abnormality,
equipment damage and personal injury. The manufacturer is NOT responsible for the safety, reliability and
performance issues and any monitoring abnormality, personal injury and equipment damage due to user's
negligence of the operation instructions. The manufacturer's warranty service does not cover such faults.
Due to constant revision, the specific products you received may not be totally in accordance with the
description of this User Manual. We sincerely apologize for that.
WARNING:
User might experience discomfort if the device is used for a prolong period of time. It is
recommended that the sensor should not be applied to the same finger for over 2 hours.
The device should not be clipped on tender tissue.
The light (infrared is invisible) emitted from the device is harmful to the eyes. The user should not
stare at the light.
User should not use apply enamel or other makeup on the fingertip.
Warning: Keep unit and lanyard away from children as the included lanyard may present an
entanglement or choking hazard to small children. Adult supervision required; never leave children
unattended with unit or lanyard
The user's fingernail should not be too long.
This device is not intended to diagnose or treat any medical condition or disease. It is intended for
non-medical use in healthy people to monitor their pulse and blood oxygen levels during sports
and/or aviation only. People who need SpO2 and pulse rate measurements because of a medical
condition should not use the device and should consult with their physician.
1 Safety
1.1 Instructions for Safe Operations
Check the main unit and all accessories periodically to make sure that there is no visible damage that may
affect your safety and monitoring performance. It is recommended that the device should be inspected
once a week at least. When there is obvious damage, stop using the monitor.
Necessary maintenance must be performed by qualified service engineers ONLY. Users are not permitted
to maintain it by themselves.
The oximeter should not be used together with devices not specified in User's Manual. Only
accompanied accessories should be used with this device.
This product is calibrated before leaving factory.
1.2 Warnings
Explosive hazard—DO NOT use the oximeter in environment with inflammable gas.
Individuals who are allergic to rubber should not use this device.
This pulse oximeter has no SpO alarms and it is not meant for continuous monitoring.
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The disposal of the pulse oximeters, accessories and packing material (including battery, plastic bags,
foams and paper boxes) should follow local laws and regulations.
Please make sure that the device and accessories are in complete accordance with the packing list, or the
device might not function normally.
1.3 Attentions
֠ Keep the oximeter away from dust, vibration, corrosive substances, explosive materials, high temperature
and moisture.
֠ If the oximeter gets wet, please stop operating it.
֠ When the pulse oximeter is moved from a cold environment to a warm and/or humid environment, please
do not use it immediately.
֠ DO NOT operate keys on front panel with sharp materials.
֠ High temperature or high pressure steam disinfection of the oximeter is not permitted. Refer to User
Manual in the relative chapter for instructions of cleaning and disinfection.
֠ Do not immerse the oximeter in liquid. When it needs cleaning, please wipe its surface with medical
alcohol by soft material. Do not spray any liquid on the device directly.
֠ When cleaning the device with water, the temperature should be lower than 60°C.
֠ For fingers which are too thin or too cold, it would probably affect the normal measurement of the users'
SpO and pulse rate. Please clip on a thicker finger such as the thumb, index or middle finger deeply into
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the probe.
֠ Do not use the device on infant or new born child.
֠ The product is suitable for children above four years old and adults (Weight should be between 15kg to
110kg).
֠ The device may not work for everyone. If you are unable to achieve stable readings, discontinue use.
֠ The update period of data is less than 5 seconds but might change based on different individual pulse
rate.
֠ If abnormal conditions appear on the screen during the test process, pull out the finger and reinsert to
restore normal use.
֠ The normal shelf life of the device is three years.
֠ The lanyard attached the product is made from non-allergic material. If you are sensitive to it, stop using
it. In addition, the lanyard could present a choking hazard. Please use extreme caution when using it.
֠ The instrument does not have a low-voltage alarm function. It only shows the low-voltage on the LED
screen. Please change the battery when the battery is used up.
֠ The instrument does not have alarm functions. Do not use the device in situations where alarms are
required.
֠ Batteries must be removed if the device is going to be stored for more than one month, or the batteries
may leak.
֠ A flexible circuit connects the two parts of the device. Do not twist or pull on the connection.
1.4 Indication for Use
The Fingertip Pulse Oximeter is a non-invasive device intended for the spot-check of oxygen saturation of
arterial hemoglobin (SpO ) and the pulse rate of adult and children. This device is not intended for continuous
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monitoring.
2 Overview
SpO stands for peripheral capillary oxygen saturation. Oxygen saturation is defined as the ratio of
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oxyhemoglobin (HbO ) to the total concentration of hemoglobin (i.e. Oxyhemoglobin + reduced hemoglobin)
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present in the blood. It is an important physiological parameter involved in respiration and circulation. For that
purpose, our company developed the Pulse Oximeter which can measure your SpO
simultaneously. The Pulse Oximeter feature herein is small, portable, non-invasive and easy to use. The user
only needs to insert a finger into the chamber to measure his/her SpO
2.1 Features
Operation of the product is simple and convenient.
The product is small, light (total weight is about 50g including batteries) and easy to use.
Power consumption of the product is low and the two originally equipped AAA batteries can be operated
continuously for 20 hours.
The product will automatically be powered off when no signal is in the product within 5 seconds.
Includes Plethymosgraph to indicate strength of blood flow.
Rotational OLED display for viewing convenience.
2.2 Major Applications and Scope of Application
The Pulse Oximeter can be used to measure human Hemoglobin Saturation and pulse rate through finger, and
and pulse rate
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and Pulse Rate.
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indicate the pulse intensity by the bar-display. The product is designed to be used by athletes, pilots or anyone
who wants to obtain their SpO and pulse rate on the go.
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The product is not suitable for continuous use.
The device is inaccurate if the user is suffering from toxicosis by carbon monoxide. The device should
not be used under such circumstance.
2.4 Environment Requirements
Storage Environment
a) Temperature: -40°C~+60°C
b) Relative humidity: ≤95%
c) Atmospheric pressure: 500hPa~1060hPa
Operating Environment
a) Temperature: 10°C ~40°C
b) Relative Humidity: ≤75%
c) Atmospheric pressure:700hPa~1060hPa
3 Principle and Caution
3.1 Principle of Measurement
Oxygenated blood absorbs light at 660nm (red light), whereas deoxygenated blood absorbs light preferentially
at 880nm (infra-red). A pulse oximeter works by passing a beam of red and infrared light through a pulsating
capillary bed and then measure the amount of red and infrared light emerging from the human nail tip via a
sensor. The relative absorption of light by oxyhemoglobin (HbO) and deoxyhemoglobin is then processed
according to the Beer-Lambert's law and the result is a qualitative measurement of the users' oxyhemoglobin
status i.e. Oxygen saturation level (SpO ).
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3.2 Caution
1. The finger should be placed properly such that it is exactly in between the infra-red Emission tube and
infra-red sensor (see the attached illustration of this manual, Figure 1 & 5), or else it may cause inaccurate
measurement.
2. The pulse oximeter should not be used on any finger where blood flow might be restricted. For example,
a limb tied with arterial canal or blood pressure cuff or receiving intravenous injection.
3. Make sure the optical path is free from any optical obstacles like rubberized fabric.
4. Excessive ambient light may affect the measuring result. It includes fluorescent lamp, dual ruby light,
infrared heater, direct sunlight and etc.
5. Strenuous action of the subject or extreme electrosurgical interference may also affect the accuracy.
6. Testee cannot use enamel or other makeup on the finger.
3.3 Limitations
1. As the measurement is taken on the basis of the arteriole pulse, substantial pulsating blood flow of
subject is required. For a subject with weak pulse due to shock, low ambient/body temperature, major bleeding,
or use of vascular contracting drug, the pulse oximeter might not be able to take a reading. In this case, the
measurement will also be more sensitive to interference.
2. For those with a substantial amount of staining dilution drug (such as methylene blue, indigo green and
acid indigo blue), or carbon monoxide hemoglobin (COHb), or methionine (Me+Hb) or thiosalicylic
hemoglobin, and some with icterus problem, the SpO
3. The drugs like dopamine, procaine, prilocaine, lidocaine and butacaine may also affect the accuracy of
your SpO levels.
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4 Technical Specifications
1) Display Format: OLED Display;
SpO Measuring Range: 0% ~ 100%;
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Pulse Rate Measuring Range: 30 bpm ~ 250 bpm;
Pulse Wave Display: columniation display and the waveform display.
2) Power Requirements: 2×1.5V AAA alkaline battery, adaptable range: 2.6V~3.6V.
3) Power Consumption: Less than 30mA.
4) Resolution: 1% for SpO and 1 bpm for Pulse Rate.
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5) Measurement Accuracy: ±2% in stage of 70%-100% SpO
than 70%. ±2 bpm during the pulse rate range of 30-99 bpm and ±2% during the pulse rate range of
100~250 bpm .
7) Measurement Performance in low blood perfusion condition: SpO2 and pulse rate can be shown during
low blood perfusion. However, SpO2 error is ±4%, pulse rate error is ±2 bpm or ±2% (select larger).
8) Resistance to surrounding light: The deviation between the value measured in the condition of man-made
light or indoor natural light and that of darkroom is less than ±1%.
8) Equipped with a function switch. The Oximeter will automatically power off if the finger is removed after 5
seconds
9) Optical Sensor
Red light (wavelength is 660nm, 6.65mW)
Infrared (wavelength is 880nm, 6.75mW)
5 Accessories
One hanging rope;
Two AAA batteries;
One silicon cover;
One User Manual.
6 Installation
6.1 View of the Front Panel
Figure 2 Front view
Mounting the hanging rope
6.2 Battery
Step 1. Refer to Figure 3 and insert two AAA size batteries properly in the right direction.
Step 2. Replace the cover.
Please take care when you insert the batteries. Improper insertion may damage the device.
6.3 Mounting the Hanging Rope
Step 1. Put the end of the rope through the hole.
Step 2. Put another end of the rope through the first one and then tighten it.
7 Operating Guide
1) Insert the two batteries properly to the direction, and then replace the cover.
2) Open the clip as shown in Figure 5.
Figure 1 Operating principle
determination by this monitor may be inaccurate.
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, and meaningless when stage being smaller
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Figure 3 Batteries installation Figure 4