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Add rea #3
Add rea #3 turns on the micro peristaltic pump for the addition of reagent #3. The mixing pump is
circulating the sample as the reagent is being added. The Add Rea #3 time is set in seconds.
Add rea #4
Add rea #4 turns on the micro peristaltic pump for the addition of reagent #4. The mixing pump is
circulating the sample as the reagent is being added. The Add Rea #4 time is set in seconds.
Wait
The waiting time is set in seconds. Wait puts the CA6 in Stand By mode.
Mix
The mixing time is set in seconds.
Reference
The reference measurement is the first point for the calculation of the absorbance, I
0
. Reference sets the
time, in seconds, of when to take the base intensity measurement.
Absorbance
Absorbance sets the time, in seconds, of when to take the colored intensity measurement, the Reading,
I
1
, and calculate the absorbance, I
0
/ I
1
. Typically 1 – 2 seconds
Calculation
Calculation sets the time in seconds to convert the absorbance reading into a concentration reading and
sends the calculated value to the main display. Calculation uses the absorbance reading and the
calibration factor. Typically 1 – 2 seconds
Calibration
Calibration sets the time in seconds, to calculate and record a new calibration factor after a calibration
extra cycle, Auto Calibration. Typically 1 – 2 seconds
Validation
Validation sets the time, in seconds, to calculate and display % Validation of a Known Standard in the
display screen using the current calibration factor as a calibration check. A 5 ppm sample reading 4.8
ppm, displays 96% after the validation extra cycle. Typically 1 – 2 seconds
Blank
The Blank function sets the time, in seconds, to enter a new blank calibration, calculating and recording
the new blank value in the calibration screen after a Blank extra cycle. Typically 1 – 2 seconds
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