The Sequence Main Panel:

    The main panel shown below is used to enter sample info, start and stop sample channels as well as lauch other panels via the 6 menu selection push buttons. To start a sample, enter the channel that you wish to run it on. You may either use the arrows or simply enter the number. If you wish to use the numeric keypad be sure that your NUM LOCK is on at the keyboard. Next, enter the sample name pressing either return or enter. If you wish to edit the name you can use the mouse to select where the editing is to take place. Next, enter a comment if desired. Then as soon as you have connected the air to the sample and placed it in the block. Hit the red START button. If you wish to change the sample name or comment while the sample is running use the purple RECALL button to be back the current info so you don't have to type everything in again, then make the changes using the mouse to position the cursor. Then press the UPDATE button to update that channel. The STOP button causes the active collection of data on the specified channel to cease.

    The menu display buttons pop up new panels that perform various functions. To activate panel simply click once on the button. To deactivate that panel click on the X in the upper right hand corner of the panel. You will notice that the Main panel labeled Sequence does not have an X in it's upper right hand corner. This is because this panel must be active at all times. It maybe minimized if you wish but not closed. If for some reason you wish to stop the OSI program pull the bottom of the Sequence window down which will reveal a Program Shut down button. Click this button and the program will shut down after taking the readings on the current channel. To start it again choose the OSI folder from the Windows START button on the menu bar at the bottom of the screen. Then choose the OSI.exe icon.

The Table subpanel:

    This panel functions as the instrument status screen on previous versions of the Oil Stability Instrument, except that it is possible to leave this screen showing all the time. The second column from the left has a moving x to indicate which channel is currently being read. The current time is constantly being updated at the top of the window. The Status column shows whether a particular channel is "active" or "inactive". The Sample Name column comes next, followed by the Run Time column which is how long a sample has been under test so far. The next column is the OSI column which will be 0.00 until an OSI is found. Next is the Start Time column which is when the sample test was started. The last column can be toggled by the button above it between
Comments and File Names. The directory structure used by this instrument is different than the previous instrument to allow the user to manage his files more conveniently using standard Windows functions. The directory tree is based upon year and month like so: C:\OSI\1998\07\3101.OSI The actual file name 3101.OSI is the first sample run on the 31st of July, 1998. The .OSI file contains the sample information and the raw data for the OSI curve. It can be viewed if desired using the Windows Notepad editor.

 The Graph subpanel:

    This panel allows the graphs from upto 6 samples to be plotted together and if desired printed on any Windows 95/98/NT compatible printer. To select a channel to be plotted select the channel in the selector box or push the plot from filename button if you wish to plot a sample analyzed earlier that is not currently at a channel location. This will bring up a filename selector box where you can choose the file you wish to plot. If you do not know the filename you can use the database panel to find info for any previous sample name, date, or comment that was found in any previously run sample. Note in the screen above that three samples of a frying oil were tested. The first sample was tested fresh unused frying oil. The next samples were taken of the same oil after 3 and 5 days of frying. One can see how the stability of these oils were reduced after being used for frying. It is possible to monitor the effect of anti-oxidants additions or pro-oxidant effects from various contaminants. The OSI technique has been used by all major fats and oils producers.
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