Electro-Chemical Devices (ECD) CA6 Hardness Analyzer - Manual (Page 25)

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
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