MultiSmart Installation & Operation Manual
14.8.12 Level Locked
The Level Locked alarm indicates that the level returned by the level device has not changed by more than
a predefined amount in a specified period of time. The timed period can be a period of the day (e.g. 14:30 to
17:00) or the entire day. Up to four different time periods can be set.
To configure, navigate to the following screen:
• Press the Locked button
• With one of the four periods highlighted, press the Configure button
• With Enabled highlighted, press the Toggle button to check the box
• Scroll down to Change Threshold (%) and enter the minimum percentage by which the level should
change during the set period.
• Scroll down to Duration and enter the period of time over which to monitor the minimum percentage
change (e.g. with a threshold of 5% set, the level should change by at least 5% in 30 minutes).
• Press Save.
If only a period of the day is to be specified, rather than the whole day:
• Scroll down to Always and press Toggle to uncheck the box.
• Enter a start and finish time.
If a start and finish time is specified, any ‘Locked’ time immediately prior to the start time is taken into
account when the period starts. For example, with a 5% threshold, a 30 minute duration and a start time of
06:00 set, and if the level changes by no more than 1% in 25 minutes prior to the start time and continues
like this for another 5 minutes, a Level Locked alarm is generated at 06:05.
MultiSmart_IO_Manual_R20 Page 121 of 260
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