Oxygen Tank Duration Calculator
Calculate how long your oxygen tank will last based on pressure, size, and flow rate
Calculate Oxygen Tank Duration
Selected: 680 L - Large portable
Current pressure in the oxygen tank
Oxygen consumption rate
Tank Duration Results
Short durationOxygen Consumption
Refill Requirements
Calculation Formula
Duration = (Pressure - 500 PSI) × Conversion Factor ÷ Flow Rate
Your calculation: (2000 - 500) × 0.28 ÷ 2.0 = 210 minutes
⚠️ Safety Recommendations
• Plan for refill within next few hours
• Always maintain backup oxygen supply for emergencies
• Monitor tank pressure regularly and refill before reaching 500 PSI
• Keep spare tanks available for continuous oxygen therapy
Example Calculation
Hospital Patient Example
Scenario: Patient requiring continuous oxygen therapy
Tank size: E (680 L capacity)
Tank pressure: 2000 PSI
Flow rate: 2 LPM
Conversion factor: 0.28
Calculation
Duration = (2000 - 500) × 0.28 ÷ 2
Duration = 1500 × 0.28 ÷ 2
Duration = 420 ÷ 2
Duration = 210 minutes (3.5 hours)
Tank Size Reference
Medical Usage Guide
Low Flow (1-2 LPM)
Stable patients, sleep therapy
Medium Flow (3-5 LPM)
Moderate respiratory distress
High Flow (6+ LPM)
Severe respiratory conditions
Safety Tips
Never let tank pressure drop below 500 PSI
Keep spare tanks for emergencies
Monitor pressure gauge regularly
Store tanks in cool, dry places
Ensure proper ventilation during use
Understanding Oxygen Tank Duration
What Affects Tank Duration?
Oxygen tank duration depends on three critical factors: tank size (capacity), current pressure, and flow rate. Understanding these variables helps ensure continuous oxygen supply for medical needs.
The Duration Formula
- •Pressure: Measured in PSI, excludes unusable 500 PSI residual
- •Conversion Factor: Unique to each tank size
- •Flow Rate: Patient's oxygen consumption rate
Medical Applications
Emergency Medicine
Critical for ambulances and emergency rooms
Home Care
Long-term oxygen therapy for chronic conditions
Surgery
Anesthesia and surgical procedures
Important: Always consult healthcare professionals for medical oxygen therapy requirements.