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Siemens SITRANS L にも：応用例 (11 ページ)

6.10

Adjusting the fail-safe setting

To change the fail-safe setting, go to the 'FLS'' display (as described in Adjustments

(Page 23)), and proceed as follows:

1. Press the "20" key to scroll forward through the available values (1-2-3), and press the "4"

key to scroll backwards.

2. Once you have reached the appropriate value, stop pressing the key. The display

automatically returns to the Run mode (6 secs).

6.11

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

(Page 27). If a different value is desired, the fail-safe timer should be adjusted after the speed

of response is set.

6.12

To change the fail-safe setting, go to the 'FSt'' display (as described in Adjustments

(Page 23)), and proceed as follows:

1. Press the "20" key to increase the 'waiting' period, and press the "4" key to decrease it.

2. Once you have reached the appropriate value, stop pressing the key. The display

automatically returns to the Run mode (6 secs).

SITRANS LU180

Operating Instructions, 09/2021, A5E37100674-AB

Indicates that the device is now in fail-safe mode.

seconds

The current option is shown

(i.e. full)

Press "20" for option 2

(i.e. empty)

Option 2 has now been selected.

seconds

6.10 Adjusting the fail-safe setting

Operating