Proper Technique for Using a Peak Flow Meter

A peak flow meter is a simple device used to measure how well your lungs are functioning. It is commonly used by individuals with asthma to monitor their lung function and track changes in their breathing. Using a peak flow meter correctly is essential to ensure accurate results and effectively manage your condition.

Model CLA-7000 Series Free Chlorine(DPD)online automatic analyzer
Inlet channel Single channel/Double channel
Measurement range Free chlorine\uff1a(0.0\uff5e2.0)mg/L or (0.5\uff5e10.0)mg/L ,Calculated as Cl2; pH:(0-14); Temperature(0-100)\u2103
Accuracy Free chlorine:\u00b110% or \u00b10.1/0.25 mg/L; pH:\u00b10.1pH\uff1bTemperature\uff1a\u00b10.5\u2103
Measurement Period \u22642.5min
Sampling interval The interval (1\uff5e999) min can be set arbitrarily
Maintenance cycle Recommended once a month (see maintenance chapter)
Environmental requirements A ventilated and dry room without strong vibration;Recommended room temperature\uff1a(15\uff5e28)\u2103\uff1bRelative humidity\uff1a\u226485%\uff08No condensation\uff09
Water sample flow (200-400) mL/min
Inlet pressure (0.1-0.3) bar
Inlet water temp. (0-40)\u2103
Power supply AC (100-240)V\uff1b 50/60Hz
Power 120W
Power connection The 3-core power cord with plug is connected to the mains Socket with ground wire
Data output RS232/RS485/(4\uff5e20)mA
Size H*W*D:(800*400*200)mm

To use a peak flow meter, start by standing up straight and taking a deep breath. Make sure your feet are shoulder-width apart and your back is straight. Hold the peak flow meter horizontally with the mouthpiece facing you. Take a deep breath in and place the mouthpiece in your mouth, sealing your lips around it to create a tight seal.

Once you have the mouthpiece in your mouth, exhale as forcefully and quickly as possible into the peak flow meter. Make sure to blow out all the air in your lungs until you cannot exhale any further. The peak flow meter will measure the speed at which you are able to exhale, giving you a reading in liters per minute.

It is important to repeat this process three times to ensure accuracy. Take note of the highest reading out of the three attempts, as this will be your peak expiratory flow rate (PEFR). This number is a valuable indicator of how well your lungs are functioning and can help you and your healthcare provider make informed decisions about your asthma management.


When using a peak flow meter, there are a few key points to keep in mind to ensure accurate results. First, always use the same peak flow meter for consistency. Different devices may give slightly different readings, so it is important to stick with one meter to track changes over time.

Additionally, make sure to use your peak flow meter at the same time each day. Your lung function can vary throughout the day, so measuring at a consistent time will give you a more accurate picture of your breathing patterns. Many individuals find it helpful to use their peak flow meter in the morning before taking any asthma medications.

It is also important to keep a record of your peak flow readings. By tracking your PEFR over time, you can identify patterns and trends in your lung function. This information can be invaluable in managing your asthma and adjusting your treatment plan as needed.

In conclusion, using a peak flow meter is a simple yet effective way to monitor your lung function and manage your asthma. By following the proper technique and keeping accurate records of your readings, you can gain valuable insights into your breathing patterns and work with your healthcare provider to optimize your asthma management. Remember to use the same peak flow meter consistently, measure at the same time each day, and keep a record of your readings to make the most of this valuable tool.