Hach-Lange DR 6000 User Manual - Manual (Page 52)

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Standard programs
7. Select the required data analysis interval, or the start- and
end date and confirm with Next.
8. Set an upper and lower control limit and confirm with Next.
9. In Trend Settings all selected functions are shown. Press
OK to confirm.
10. Select the required trend with the created settings from the
list. Press Select.
The trend can be displayed in several formats, as a line or a
point.
11. Select Information to call up an overview of the parameter
information.
12. Select Options > Add Data to add more readings to the
trend.
13. Select Options > Ratio:Off to activate the Ratio function.
The ratio corresponds to the first row of readings selected.
5.3.4.2 Ratios
The Ratios function is based on a unique allocation of the
samples to a sample location with the optional accessories "LOC
100 RFID Locator" and "RFID Sample ID Kit". The precise
sample location, date and time are assigned automatically. Ratio
analysis calculates a ratio between two or three parameters. The
last defined parameter is represented by 1. The first or second
parameters are calculated as a ratio against this, e.g. 4:2:1.