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Air Flow Calculation

The Air Flow Calculation is used to determine how much air is passing through a section of cable at a given point in time. Using the Air Flow Calculation, the flow rate of any cable section can be measured in Standard Cubic Feet per Hour without a flow rater or Flow Gauge. The following items and information are needed to calculate air flow:
  • C Pressure Gauge
  • Pneumatic resistance charts
  • Two pressure readings along the cable to be tested
  • Distance in feet between pressure testing valves
  • Pneumatic resistance of the cable to be calculated (per 1,000 feet)

Air Flow Calculation Formula