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User-Entered Calibration
Overview
The Pocket Colorimeter™ II will accept a user-prepared calibration curve. The
curve can extend from 0 to 2.5 absorbance. A user-prepared calibration curve
may be entered into any channel that does not contain a factory-programmed
curve. These channels are labeled “abs” on instruments having a single factory
calibration or are labeled “1” and “2” on the uncalibrated single wavelength
instruments. Any chemistry that can be run at the instrument wavelength may
be user-entered in these channels.
Using prepared standard solutions that cover the range of interest, the meter
generates a calibration curve by calculating the straight-line segments
between each standard entered. A calibration curve may be entered using the
keypad. Factory-entered calibration curves may also be recalculated or
adjusted using the same procedure.
To enter the user-entered calibration mode, press the
MENU key and hold it
down until the display shows “USER” (about 5 seconds), followed by “CAL”.
Press
ZERO/SCROLL to scroll through the options.
Note: If the meter does not display USER followed by CAL after pressing the
MENU key, the factory calibration cannot be modified on this channel.
5957088.book Page 15 Friday, March 22, 2013 3:54 PM
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