P-600 SIC Analyzer Manual
Chapter IV: Programming
31
CAUTION: Any changes made will affect how the Analyzer performs a
measurement. You should have a complete and thorough understanding
of how the instrument performs measurements before making any
changes to the State Table.
Any of the following steps can be included in a salt in crude measurement cycle. Steps that are underlined
are required. The last step in any measurement cycle must be Repeat.
•
Wait
—
This idles the Analyzer for a programmed period of time. It is generally used to allow a
component or function to stabilize before proceeding to the next step. It is set in seconds.
•
Inject
—
This injects crude sample and solvents into the measurement cell.
•
Mix
—
This injects instrument air through the sample/solvent line to (1) ensure all contents have
been injected into measurement cell and (2) thoroughly mix the crude/solvent mixture. It is set in
seconds.
•
Read
—
This step is used to read and calculate the SIC value. The programmed time period
associated with this step allows the reading to stabilize. It is set in seconds.
•
Drain
—
This opens the valve to the atmospheric drain to ensure that spent sample and vapors
are removed from the measurement cell.
•
Clean
—
This step allows for the injection of cleaning solvent (naphtha) into the measurement
cell. If a cleaning step is used, it should occur after Drain and before Repeat. The duration is the
number of measurements that should be performed between cleaning steps.
•
Repeat
—
This should always be the last step in the State table. It tells the Analyzer to return to
state #1.
The default states are as follows:
Line
State Type
Data
1
Drain
20
2
Inject
-
3
Mix
60
4
Read
30
5
Drain
60
6
Clean
10
7
Repeat
-
* Read state has additional hardcoded 40 seconds for measurement circuit.
Calibration
This menu selection is used for calibrating the Analyzer. See Chapter VI: Maintenance & Service for more
information (