6 - 5
Druck ADTS 405 User Manual
K114 Issue No. 9
6
Press F1, F2 or F3 to select the required WAIT and TIME periods.
The main pressure displays shows the WAIT or TIME period counting down.
After timing, the timed average value, identified by a T directly to the right
of the value, replaces the instantaneous rate value.
In measure mode the display changes to show the timed rate of all associated
parameters on the same screen. Pressing one of the set-point keys (e.g., ALT, ROC,
SPEED etc.,) or CLEAR/QUIT exits from this screen.
At any time during rate timing or when a timed value is displayed, pressing the RATE
TIMER key allows for either the restarting or cancelling of the timing. When timing is
cancelled, the rate displays return to instantaneous values.
The timed average value remains until a new aim is entered. During this
time, it is possible to view any parameter.
The WAIT and TIME periods can be changed using SETUP, RATE TIMER,
providing SETUP lock is not enabled.
HOLD
When HOLD is pressed, a changing pressure is instantaneously held. Pressing HOLD
again releases the pressure to continue to the aim value. The HOLD facility applies to
both channels simultaneously and can be used to test pressure switches as follows:
Airspeed Switch Test
Take the airspeed to a value just below the expected trip point.
Enter a low rate of speed.
Enter a new airspeed aim above the trip point.
Immediately the switch trips, press HOLD.
Read the airspeed value - this is the trip value for increasing airspeed.
Enter a new airspeed aim below the expected trip value.
Immediately the switch trips, press HOLD.
Read the airspeed value - this is the trip value for decreasing airspeed.
Press HOLD again to release hold.
For both channels to start moving to new aims at the same time, use the following
sequence:
Press HOLD.
Enter Ps channel aim.
Enter Pt channel aim.
Enter required rates.
Press HOLD again to release hold.
HOLD is automatically released when entering Measure Mode.
To Next Page
Loading...
