CE- Shanghai Baoya-How long can you breathe with the positive pressure fire-fighting air respirator?

PARIS - Oct. 10, 2024 - PRLog -- Let's start by discussing the working principle of the air respirator. The air respirator automatically adjusts the air supply based on the user's breathing volume. The breathing air travels from the cylinder, is decompressed by a pressure reducer, passes through a supply valve that automatically adjusts the air supply volume, and is finally delivered to the user via a full-face mask with slight positive pressure.

The exhaled air is then directly expelled into the atmosphere through the exhaust valve on the full-face mask. When the cylinder capacity and inflation pressure are fixed, the usage time depends on the worker's work intensity and breathing habits.

First, let's talk about work intensity. According to estimates, the average air consumption for different types of work is roughly as follows:

For personnel using air respirators, the work intensity is typically between high-intensity work and vigorous activity, resulting in generally high air consumption.

Taking a 6.8L / 30MPa cylinder as an example, the approximate air storage capacity is around 1,900L. If the standard test flow rate is 30L/minute, the theoretical usage time is approximately 63 minutes. However, if the respiratory rate is calculated at 50L/minute, the usage time drops to 35 minutes.

When the same air respirator is used by the same person for the same task, the only variable affecting usage time is breathing habits.

To extend the usage time of your air respirator, you need to adjust your breathing habits, maintain a calm mindset, and reduce tension. You can adopt the method of "deep inhalation, slow exhalation" to prolong each breathing cycle, allowing for sufficient air exchange within the user's body.

Try to control your breathing volume, which can effectively reduce ineffective breathing and avoid wasting air, thereby extending the usage time. Therefore, to maximize the usage time of your air respirator, adopt the breathing pattern of "deep inhalation, slow exhalation" (an important reminder repeated three times) to cultivate good breathing habits that will undoubtedly extend the usage time of your air respirator!

The following conclusions are based on actual tests and are for reference only:

~ To be continued

By Starrick Li
Overseas BD

Shanghai Baoya Safety Equipment Co., Ltd

Tel: +86–172 7468 1311

• +86–183 2102 9311

email : starrick.li.baoya@gmail.com

www.bauergroup.com.cn