What is the duration of air supply in an SCBA unit?
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Our standard cylinder is rated at 300 bar. A 6.8L cylinder filled to this pressure can theoretically provide approximately 50 minutes of air supply. However, actual usage time can vary significantly based on factors like breathing rate, physical exertion, and other conditions. We strongly recommend allowing a 10-minute safety margin, resulting in an effective duration of around 40 minutes.
To calculate the theoretical air duration, you can use the following formula:
- Duration = (Pressure x Volume) / 40
- For example, with a 6.8L cylinder at 300 bar:
- Duration = (300 bar x 6.8 L) / 40 = 51 minutes
Again, this is a theoretical calculation, and actual usage time will be shorter.
Important: Always prioritize safety and consider the potential for reduced air supply under demanding conditions.