Hach Portable Spectrophotometer DR 2800 User Manual page 76

Portable spectrophotometer
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Advanced Operations
Screen
76
Refer to
Table 11
formula keys.
Note: The evaluation formula is built up successively in the display in
accordance with the input.
Note: The arrow key deletes the most recently entered element of the
formula.
Table 11 Edit formula key descriptions
Key
Abs/Variables
New Number
for detailed information on the Edit
Description
Press the Abs/Variables key to select, from the
displayed list, the required element of the defined
measuring sequence and therefore the corresponding
measurement wavelength, so that this can be taken into
account in the formula.
Press New Number to enter a new factor or constant.

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