6300 Rev H User’s Manual
125-9106A Page 37
[7] The Actual value at the end of 2 minutes
[8] Total leak in 2 minutes
[9] Average per-minute leak rate over 2 minutes
[10] The Actual value at the end of 3 minutes
[11] Total leak in 3 minutes
[12] Average per-minute leak rate over 3 minutes
When CANC is pressed to exit out of Leak mode, the 6300 automatically goes back to Control mode.
Instant Pitot leak rate: While the leak-check is going on, the Actual values are still updated every 250
msec in the Upper section of the screen. The Actual Pitot Rate is the “instant” leak rate and will instantly
indicate any change in the leak. This is especially helpful when adjustments are made to the Pitot system
(including tightening fittings, adjusting adapters etc) to reduce the leak.
Excessive Pitot Leak: If the ‘instant’ leak-rate exceeds 50 knots/min, to protect the aircraft instruments,
the 6300 will automatically put Pitot back into Control mode and abort the leak check. An error message:
ERR 7: Pitot leak excessive. Exiting Leak mode. Press CANC
will be displayed on the last line of the screen. Pressing CANC will clear the Lower section.
Independent Static Leak-check
The ideal way to perform a Static leak-check is to keep Pitot in Control at 100 knots and control Static to a
minimum of 3000 feet above “Ground”, before starting the leak check. Below is a step-by-step process of
performing the Static leak-check. It is assumed that the Self-Test has already been performed as
described in Section 3.1
1. Close both Pitot and Static ports (tightly, please).
2. Press GND to perform the Go-To-Ground function. The pumps will turn On and the tester will
go through the EQZN process. The targets will automatically be set to 20 knots and the feet
equivalent to “Ground” (ambient pressure).
3. Once the EQZN process is completed, the tester will control the Actual values at the Targets.
4. Change the Pitot Target to 100 knots. (Press 2 to change Pitot Target. Press 1, 0, 0, ENTER for
new value.) The new Target value will be blinking. Do NOT press GO.
5. Assuming that “Ground” is 200 feet, change the Static Target to 3200 feet. . (Press 6 to change
Static Target. Press 3, 2, 0, 0, ENTER for new value.) The new Target value will be blinking.
6. Press GO to activate both targets simultaneously. The Pitot Actual value will ramp to 100 knots.
The Static Actual value will ramp to 3200 feet.
7. Once the Pitot and Static Actual values reach their targets, allow them to stabilize for a few
seconds.
8. Change the Static mode to Leak. (Press 8 to change Static mode. Press 2 to select Leak). ‘Leak’
will be blinking in the Static mode field. Press GO to activate. Note that Pitot will still be in
Control at 100 knots.
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