Process
Requirement–
A manufacturer of
sulfuric acid and related chemicals needed an easy way to
fill trucks with their hazardous cargo. They needed to:
- Ensure the safety
of the operator by eliminating exposure from
looking in the loading port to gage how full the
tank was
- Account for
actual amount sold - accuracy and reliability
extremely important
- Eliminate
overfills - Overages must be pumped into other
tanks and returned to the process through a
return system which traps vapors but reduces
their production capacity.
- Complicated
software of current meters were making it
extremely difficult to program the range of their
flow instruments
|
| |
Solution–
The
Sparling Tigermag
|
- Their first
Tigermag was installed in a truck loading line
for Oleum (130% sulfuric acid)
- The feeding
system is completely automated, sending a batcher
the high frequency pulses for control and the PLC
a low flow alarm via a current trip from the
4-20mA signal.
- The PLC controls
the valves and monitors other larms for
shutdowns.
- Mag-Command made
programming easy - they didn't have to open the
meter to reset the span
- They were so
satisfied, they put it in three other truck
loading applications in 99% sulfuric and 20-40%
sodium bisulfite.
|
|
