Sonmol Digital Peak Flow Meter PEF FEV1 Tester Instruction Manual

1. Product Overview

The Sonmol Digital Peak Flow Meter is a portable electronic device designed for monitoring respiratory function by measuring Peak Expiratory Flow (PEF) and Forced Expiratory Volume in 1 second (FEV1). It is suitable for both adults and children and features an LCD display with a smart risk indicator system (red, yellow, green zones) to help users understand their lung function status.

This device utilizes a differential pressure sensor for ultra-precise measurements, adhering to US Department of Health and Human Services guidelines. Its compact design makes it convenient for daily use and monitoring.

Figure 1: Device Components. This image shows the Sonmol Digital Peak Flow Meter with its key parts labeled: Mouthpiece, Risk Indicator display, LCD Display, and Home Button.

Key Features:

• PEF and FEV1 Measurement: Accurately measures two critical respiratory parameters.
• Digital LCD Display: Provides clear, easy-to-read test results.
• Smart Risk Indicator: Features a color-coded system (Green, Yellow, Red) to indicate lung function status based on personal expected values.
• Portable Design: Compact and lightweight, powered by 2 AAA batteries for extended use.
• Easy to Clean: Designed with an open mouthpiece for simple cleaning and disinfection.

2. What's in the Box

• 1 x Sonmol Digital Peak Flow Meter (Model: SMBT-2)
• 1 x User Manual (this document)
• Note: 2 AAA batteries are required but not included.

3. Setup and First Use

3.1. Battery Installation

1. Locate the battery compartment on the back of the device.
2. Open the battery cover.
3. Insert two (2) AAA batteries, ensuring correct polarity (+/-).
4. Close the battery cover securely.

Figure 2: Battery Installation. This image illustrates the device's power source, indicating it uses 2 AAA batteries for up to one year of daily use.

3.2. Setting Personal Expected Values (PEF)

To utilize the smart risk indicator (red, yellow, green zones), you must first set your personal expected PEF value. This value is typically determined by a healthcare professional or can be estimated using charts based on age, height, and gender. A QR code tool for calculating expected PEF values is mentioned in the product description, which you may scan for assistance.

1. Turn on the device by pressing the Home Button.
2. Navigate to the settings menu (refer to the device's on-screen prompts or a more detailed manual if available for specific button presses).
3. Enter your personal expected PEF value.
4. Confirm the setting.

Important: The risk indicator will not display correctly without a properly set expected PEF value.

4. Operating Instructions

4.1. Taking a Measurement

1. Ensure the device is clean and the mouthpiece is free of obstructions.
2. Sit or stand upright in a comfortable position.
3. Take a deep breath, filling your lungs completely.
4. Place your lips tightly around the mouthpiece, ensuring a good seal.
5. Exhale as hard and fast as you can into the mouthpiece in a single breath.
6. The device will display your PEF (L/min) and FEV1 (L) values on the LCD screen.
7. Repeat the measurement two more times. Record the highest of the three readings.

Figure 3: PEF and FEV1 Measurement. This image explains Peak Expiratory Flow (PEF) as the maximum speed of expiration and Forced Expiratory Volume in 1 second (FEV1) as the amount of air exhaled in one second, both displayed on the device.

4.2. Understanding the Risk Indicator

After each test, a triangular symbol will point to a colored section (green, yellow, or red) on the device's display, indicating your lung function control condition relative to your personal expected PEF value.

• Green Zone (PEF ≥ 80% of personal best): Indicates good control of lung function.
• Yellow Zone (50% ≤ PEF < 80% of personal best): Indicates caution. Your peak flow reading suggests a need for attention or adjustment to your management plan. Consult your healthcare provider.
• Red Zone (PEF < 50% of personal best): Indicates a medical emergency. Seek immediate medical attention.

Note: The risk indicator will only function if your personal expected PEF value has been correctly set in the device.

Figure 4: Smart Risk Indicator. This image details the meaning of the green, yellow, and red zones for the PEF risk indicator, guiding users on their lung function status.

4.3. Recording Measurements

The Sonmol Digital Peak Flow Meter does not have Bluetooth functionality and cannot automatically sync data. You must manually record your readings.

• Peak Flow Diary: Use a physical peak flow diary to log your daily PEF and FEV1 readings, along with the corresponding risk indicator.
• ePEF App: A free 'ePEF' app is available for manual record-keeping and online sharing. Download the app and manually input your readings.

Figure 5: Recording Options. This image presents two methods for recording measurements: a traditional Peak Flow Diary for manual entry and the 'ePEF' app, also requiring manual data input as there is no Bluetooth connectivity.

5. Maintenance and Cleaning

5.1. Cleaning the Device

Regular cleaning of the mouthpiece is essential for hygiene and accurate readings. The device features an open mouthpiece design for easy cleaning.

1. Remove the mouthpiece from the main unit.
2. Wash the mouthpiece with warm water and mild soap.
3. Rinse thoroughly with clean water.
4. Allow the mouthpiece to air dry completely before reattaching it to the device.
5. Wipe the main body of the device with a soft, damp cloth. Do not immerse the main unit in water.

Caution: Do not use abrasive cleaners or solvents on any part of the device.

5.2. Battery Replacement

When the battery indicator on the display shows low power, replace the two AAA batteries following the instructions in Section 3.1. Timely battery replacement ensures consistent performance and accuracy.

6. Troubleshooting

Figure 6: Bluetooth Functionality. This image clarifies that the current model does not have auto-sync capabilities and suggests an upgraded Bluetooth model for users who require this feature.

7. Specifications

8. Warranty and Support

Specific warranty information is not provided in the product details. Please refer to the packaging or contact Sonmol customer support for warranty details and technical assistance.

For further inquiries or support, please visit the official Sonmol website or contact their customer service department.