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Example 1 Level Monitoring with Alarms
A vessel, containing a liquid that has a variation in level that is to be
monitored, with a high level alarm set on Relay 1, and low level alarm set
on Relay 2.
The application is to be assigned to Point (transducer) 1.
empty distance (P1-105), 11.0 feet
100%, span (P1-106), 10.0 feet
85% , high alarm on (P*213), 8.5 feet
80% , high alarm off (P*214), 8.0 feet
15% , low alarm off (P*224), 1.5 feet
10% , low alarm on (P*223), 1.0 feet
In this example, when the level rises to 8.5 feet, Relay 1 will come on until
the level drops to 8.0 feet when it will turn off. If the level drops to 1.0 feet,
then Relay 2 will come on until it rises to 1.5 feet when it will turn off.
The display will show the level in the tank.
The mA output 1 will be representative of level where 4mA = empty level
(0%) and 20mA = 10.0 feet (100%).
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