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)