YSI BOD Analyst Pro - Manual (Page 70)

YSI BOD Analyst Pro ® User Manual 70
file. You may choose one or two Samples to compare. The length of time may be days to years
depending on the size of the database. Finally there is a field to label the title of your graph or
plot. You may type in up to 80 characters/spaces to describe your graph.
Below is an example graph displayed for reference to accompany the setup information that
follows in the next sub-section where you will learn to set up and print a graph.
9.2 SET UP AND PRINT A GRAPH
To set up a graph like the one shown above a database file with more than one year of data was
chosen. The parameter chosen to plot was the Sample Name LC Standard T. The Start and Stop
dates were entered by the calendar icons. The Start Date was Jan 1, 2009 and the Stop Date was
Oct 30, 2009.
Once the title was typed in the Graph button was clicked to produce a series of points connected
by lines over the time period chosen. The Y-axis is the Final BOD for each date that this
particular sample was run. Basically one time a week on Thursday (T) a BOD was set up and run
on a glucose/glutamic acid preparation (GGA) used in conjunction with a full set of samples that
included Blank, Seed, Raw (influent), and Effluent. This is the time-based plot of the Standard
samples. Generally GGA Standard limits are set to run from163 to 237 mg/l BOD if appropriately
seeded. As you see all values on this plot fall within the limits listed above.
Depending on how your PC display is set the graph may not initially center in the field of view.