10 Pitot Gauge Flow Chart : 7 Training Exercises You Should Do EVERY DAY At Home!. For a given pitot pressure in psi, this flow chart will determine your flow in gpm for the specific nozzle diameter used. A pitot tube consists of two tubes in one probe that sense both total and static pressure.
If the glycerin density happens to change from 78.6 lb/ft3 to 75.1 lb/ft3 , calculate the mass flow rate at a differential pressure of 24.8 ”wc. The flow impacts on one tube pointing directly into the fluid flow that senses the total pressure. Do not apply these values to other nozzles and pitot gauges unless their coefficient of discharge.