Electro-Chemical Devices (ECD) CA6 Hardness Analyzer - Manual (Page 23)

Sample #1
Sample #1 actuates the peristaltic pump with the bottom pinch valve closed
and the colorimetric cell fills with sample #1. The sample time is set in
seconds.
SAMPLE #1 = left side of the selection valve
Sample #2
Sample #2 actuates the peristaltic pump with the bottom pinch valve closed
and the colorimetric cell fills with sample #2. The sample time is set in
seconds.
SAMPLE #2 = right side of the selection valve
Dilution options
Loop On
Loop On allows the sample liquid (sample line #1) that is to be diluted to
flow through the Sample Loop. The Loop On time is set in seconds.
Loop off
Loop Off traps the sample inside the loop tubing while the sample fluid is
flushed from the lines with the dilution water. The Loop off time is set in
seconds.
Loop On
Loop On for the dilution fluid, DI water (sample line #2), dilutes the sample
in the loop tube and fills the Colorimetric Cell.
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