1. Introduction
The CONTEC CMS50NA Pulse Oximeter is a portable device designed for non-invasive spot-check measurement of oxygen saturation of arterial hemoglobin (SpO2) and pulse rate. It is intended for sports and aviation use only and is not a medical device. This manual provides essential information for the safe and effective operation of the device.
Important Note: This product is intended for sports and aviation use only. It is not a medical device and should not be used for diagnosis or treatment of any medical condition.
2. What's Included
Upon opening the package, please verify that all components are present:
- CONTEC CMS50NA Pulse Oximeter (1 unit)
- Handy Carry Pouch (1 unit)
- 1.5V AAA Alkaline Batteries (2 units)
- Long Lanyard (Neck/Wrist Cord) (1 unit)
- User Manual (1 unit)
Image: All items included in the CONTEC CMS50NA Pulse Oximeter package, including the oximeter, carry pouch, batteries, lanyard, and user manual.
3. Setup
3.1 Battery Installation
- Open the battery cover on the back of the device by sliding it downwards.
- Insert two 1.5V AAA alkaline batteries into the battery compartment, ensuring the positive (+) and negative (-) terminals align correctly with the indicators inside the compartment.
- Close the battery cover by sliding it back into place until it clicks securely.
Image: The open battery compartment of the pulse oximeter, showing where to insert the two AAA batteries.
3.2 Attaching the Lanyard
- Thread the thinner end of the lanyard through the lanyard loop hole located on the side of the oximeter.
- Pass the thicker end of the lanyard through the looped thinner end and pull gently to secure.
Image: A visual guide demonstrating the three steps to correctly attach the neck/wrist lanyard to the pulse oximeter.
4. Operating Instructions
4.1 Taking a Measurement
- Open the clip of the pulse oximeter.
- Insert one of your fingers (preferably the index or middle finger) into the rubber opening of the oximeter, ensuring it is placed correctly.
- Press the power button on the top of the device.
- Keep your hand still and avoid shaking during the measurement process.
- The SpO2 and Pulse Rate values will appear on the display within a few seconds.
Image: A three-step visual guide showing how to open the clip, insert a finger, and press the power button to take a measurement.
4.2 Understanding the Display
The bright TFT display shows the following information:
- SpO2: Blood Oxygen Saturation Level (displayed as a percentage).
- PRbpm: Pulse Rate (displayed in beats per minute).
- Pulse Rate Waveform: A graphical representation of your pulse.
- Pulse Bar Graph: A vertical bar graph indicating pulse intensity.
- Battery Indicator: Shows the remaining battery life.
Image: The pulse oximeter display showing SpO2 and PRbpm readings, along with the pulse waveform and bar graph.
4.3 Display Orientation
The device features a rotatable multi-directional display. The display orientation automatically adjusts based on how the device is held, ensuring easy readability from various angles.
Image: The pulse oximeter display shown in different orientations, demonstrating its rotatable feature for easy viewing.
4.4 Automatic Power Off
The device will automatically power off after 5 seconds of inactivity or when the finger is removed from the sensor.
5. Maintenance
5.1 Cleaning the Device
- Clean the surface of the oximeter with a soft cloth dampened with 70% isopropyl alcohol.
- Do not immerse the device in water or any cleaning solution.
- Ensure the device is completely dry before reuse.
5.2 Battery Replacement
Replace batteries when the low battery indicator appears on the display. Always use new 1.5V AAA alkaline batteries.
5.3 Storage
Store the pulse oximeter in its handy carry pouch in a cool, dry place, away from direct sunlight and extreme temperatures.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display after power on. | Batteries are dead or incorrectly installed. | Replace batteries or re-install them correctly, ensuring polarity. |
| SpO2 and PR values are unstable. | Finger not inserted properly, patient movement, or cold hands. | Re-insert finger, remain still, or warm hands before measurement. Ensure no nail polish. |
| "Finger Out" message displayed. | Finger not detected or removed. | Ensure finger is fully inserted into the sensor. |
| Display is dim. | Low battery or screen protective film still on. | Replace batteries. Remove the thin protective film from the screen. |
7. Specifications
- Model Name: CMS50NA
- Product Dimensions: 2.24 x 1.34 x 1.22 inches
- Weight: 3.21 ounces (with batteries)
- Power Requirements: 2 x 1.5V AAA alkaline batteries
- Battery Life: Approximately 20-30 hours of continuous operation
- Display Type: TFT Display
- SpO2 Measuring Range: 0% - 100%
- Pulse Rate Measuring Range: 30 bpm - 250 bpm
- Automatic Power Off: After 5 seconds of inactivity
- Manufacturer: Contec Medical Systems Co., Ltd.
8. Warranty & Support
For warranty information and customer support, please refer to the official CONTEC website or contact your retailer. Keep your purchase receipt as proof of purchase.
Legal Disclaimer: This product is intended for sports and aviation use only. We are the direct manufacturer, there is a clear screen protector which can be removed before use.
For additional resources, you may refer to the Official User Manual (PDF).
9. Official Product Videos
How to take measurements with CONTEC50NA pulse oximeter?
Video: An official demonstration by Contec Medical Systems Co., Ltd. showing the correct procedure for taking measurements with the CMS50NA pulse oximeter.
