Page 44 MiniRanger Plus 7ML19981CJ01
Applications
Simple Level Application
One of the most common applications of a Milltronics process material level
monitor is simple level measurement, whereby the material level or space
between the transducer and reflecting surface is measured and displayed.
This may or may not include alarms and mA output.
Example
The application is to obtain a level measurement and corresponding 4-20
mA output proportional to material level in a gravel bin. The transducer face
is 5 m from the bin bottom. The empty level is 0 m (bottom) and the full level
(span) is 4.5 m from the bottom. A high alarm is required at 4 m from the
bottom and a low alarm is required at 1 m from the bottom. The maximum
rate of filling or emptying is about 1 m/min. In the event of a loss of echo, the
MiniRanger Plus is to go into fail-safe low after 2 min.
Empty
(P006)
Span
(P007)
P113-1
3.9m
P112-1
4.0m
relay 1
on
off
relay 2
off
on
P112-2
1.0m
P113-2
1.1m
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