EXAMPLE 1 - LEVEL MEASUREMENT
Material Level
This is the most common application of the XPL+ level monitor.
For this example we’ll assume the following:
» one 30 m high cement silo is to be monitored.
» the maximum vessel filling rate is 0.08 m per minute.
» alarm indicators are required when the cement level exceeds 25 m or falls below 10 m.
» filling equipment is to be automatically deactivated at 27 m.
» in the event of a measurement difficulty, failsafe operation is to be activated in 2 minutes.
» if the difficulty doesn’t subside, the filling process is to be stopped before a spill occurs.
» an XLT-30 transducer is mounted with its face flush with the top of the vessel.
» a TS-3 temperature sensor is connected to the Temp Sensor 1 terminals.
» a SAM-20 is connected as BANK 1 to the Peripheral Communications terminals.
transducer
30.00 m
(P006)
29.01 m
(P007)
25.00
(P101)
27.00 m
(P103)
10.00 m
(P102)
5.00 m
(P104)
TECHNICAL REFERENCE
PL-532 87
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