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• To change the fail-safe default obtain the `FLS' display.
• Scroll forward through the options (1-2-3) by pressing the "20" key. Scroll backward through the
options (3-2-1) by pressing the "4" key.
• When the desired option is displayed, stop pressing the key. The display will automatically return
to the Run mode (6 sec).
Fail-Safe Timer
The fail-safe timer allows the user to vary the 'waiting' period from the time a loss of echo or
operating fault condition begins, until the fail-safe default is effected. The 'waiting' period is
adjustable from 1 to 15 minutes, in 1 minute increments.
The fail-safe timer value will default to settings determined by the speed of response (see page 11).
If a different value is desired, the fail-safe timer should be adjusted
set.
• To change the fail-safe timer, obtain the 'FSt' display.
• Increase the 'waiting' period by pressing the "20" key, and decrease it by pressing the "4" key,
stopping when the desired value is displayed.
• The display automatically reverts to the Run mode (6 sec).
Units
The units of the measurement reading can be selected as follows:
1 = metres, m (factory setting)
2 = feet, ft
The selected units are also applicable to the `Blanking' and `Alarm' adjustments.
• To change the units obtain the `Un' display.
• Scroll forward through the options ( 1 - 2 ) by pressing the "20" key. Scroll backward through the
options ( 2 - 1 ) by pressing the "4" key.
• When the desired option is displayed, stop pressing the key. The display will automatically return
to the Run mode (6 sec).
Page 8
fail-safe
3 sec
current option i.e. full
Press "20" for option 2 i.e. empty
option 2 selected
6 sec
units
3 sec
current option i.e. m
Press "20" for option 2 i.e. ft
option 2 selected
6 sec
The Probe – INSTRUCTION MANUAL
after
the speed of response is
7ML19981GD61
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