Xylem photoLab 6600 UV-VIS - Manual (Page 67)

photoLab
®
6600 UV-VIS Operation
67 ba75848e01 08/2009
Variant 3:
Enter formula
Note
Entering the formula is especially simple if you measure with a commercial
test set for which the manufacturer has given the value for the coefficient a1.
It is often called the "Factor" and corresponds to the reciprocal value of the
slope of the straight line of the calibration function.
If a linear function (straight line) should be entered, it is necessary to enter
the coefficients a0 and a1 to receive correct measured values.
If the exact value for a0 is not known at the time the formula is entered, it is
sufficient to enter the coefficient a1. In this case, the User-defined blank value
function (in the Concentration / Setup menu) has to be activated to measure
with this method. Prior to measuring with this method, a blank value
measurement has to be carried out in this case. During this procedure the
value for a0 is determined and replaces the previous value.
1 Select and confirm Enter formula.
Input fields for the coefficients (a0
... a5) of the formula are displayed.
2 Enter and confirm the factors.
If no value is entered for a
coefficient the photometer
automatically uses the value 0.
3 Enter and confirm the measuring
range limits.
4 Complete the entering of the
formula with [Next].
The timers and AQA2 data linked
to the method are displayed.
5 If necessary, enter intervals for up
to 4 timers.
6 If necessary, enter the AQA2
target value and AQA2 tolerance.
7 Complete the programming of the
method with [Complete].
The method is programmed and
selected for measuring.
Edit method 16.04.07 9:52
c = a0 + a1·A + a2·A 2 + a3·A 3 + a4·A 4 + a5·A 5
a0 0.605
a1 2
a2
a3
a4
a5
Lower limit of measuring range
1,000 mg/l
Upper limit of measuring range 3.000 mg/l
Method list Delete Next
Edit method 04/16/07 9:52
Timer 0 00:00:00
Timer 1 00:00:00
Timer 2 00:00:00
Timer 3 00:00:00
AQA2 target value 2.000 mg/l
AQA2 tolerance 0.200 mg/l
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