System Leak Check
1) Connect the pressure measuring device and the pressure generating device. Connect the quick
connect from the pressure measuring device to the A1 Audit Port on the console.
2) Plug the P1 Velocity Pressure port on the pitot probe head
3) Pressurize the probe’s A1 pressure port until at least 7.6 cm H2O (3 in. H2O) pressure, or a
pressure corresponding to approximately 75 percent of the pressure-measuring device’s
measurement scale, whichever is less restrictive, registers on the device. The pressure shall remain
stable [±2.5 mm H2O (±0.10 in. H2O)] for at least 15 seconds.
Check the P2, P3, P4, and P5 pressure ports in the same fashion.
1
2
3
P3
P2
P4
P5
NOTE: The P1, P2, P3 Ports are larger than the P4, P5 Ports
2 different plugs are required
Revision:01 Page 14 of 23 9/26/2017