P-600 SIC Analyzer Manual
Chapter VI: Maintenance & Service
46
Low Solvent
– Solvent’s tank (Xylene or Alcohol) level switch status (Off = tank filled,
On = tank empty);
•
Relays
R1
–
relay1 command (Off = deenergized, On = energized);
R2
–
relay2 command (Off = deenergized, On = energized);
R3
–
relay3 command (Off = deenergized, On = energized);
Calibration
This Analyzer’s menu allows you to create custom calibration table. The maximum size of the table is 10
data points.
The Analyzer’s software will use that table to perform quadratic regression in order to find the
formula for calculating Salt in Crude concentration.
NOTE: Bartec Orb recommends a minimum of four calibration
samples (data points) for calibration table.
Calibration submenu consists of the following menu items:
•
Value
–
concentration value of a standard used for calibration cycle;
•
Start Cal Cycle
–
command to initiate calibration cycle;
•
Default Table
–
load saved table from flash memory. The table can be saved to memory from
Factory screen;
•
Reset Table
–
clear the whole table;
•
SiC Offset
–
offset applied to the final measurement result (-5.0 to 5.0);
•
Entries
–
number of data point for calibration table;
•
SiC
–
Salt in Crude concentration value (y point);
•
Conductance
–
Conductance value (x point);
•
Delete
–
command to delete data line in the same row.
Calibration is performed as follows:
1. Connect sample to Crude Oil sample loop.
2.
Set concentration value of a standard sample that’s going to be used for calibration.
3.
Index to “Start Cal Cycle” and tap Enter key. Confirm your selection.
4. The analyzer will run 3 standard cycles, average results, and input that value to the table.
5. The results should be similar. Run calibration at least twice to confirm.
6. Repeat the steps for other standards. Modify the table if needed by removing or adding entries.
Other Calibration method:
1. The zero value should remain consistent from factory calibration but can always be re-run by
circulating de-salted neutral oil through the analyzer.
2. Run the Analyzer on the process line and note conductance reading from the Run screen. At the
same time, get the Salt in Crude concentration from the lab and manually input those values into
the calibration table.