PULSAR MEASUREMENT
51
Example 1 Level Monitoring with Alarms
A vessel, containing 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.
This application is to be assigned to Point 1 (Transducer 1)
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 1.5 feet when it will turn off.
The display will show the level in the tank.
The mA output will be representative of level where 4mA = empty level (0%)
and 20mA = 10.0 feet (100%).
Empty Distance (P105), 11.0 feet
100%. Span (P106), 10.0 feet
85%. High alarm on (P213), 8.5 feet
80%. High alarm off (P214), 8.0 feet
0%, Empty level
10%. Low alarm on (P223), 1.0 feet
15%, Low alarm off (P224), 1.5 feet
