Electro-Chemical Devices (ECD) CA6 Hardness Analyzer User Manual
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4. When the analysis cycle begins the analyzer will sample the DI water and automatically run 1
analysis cycle and then stop and enter the Stand-By (Wait) mode. Repeat 2 times.
5. After the third cycle press PROGRAM → CALIBRATION MENU key (Password protected, Service
1111) to open the calibration menu window. Press and hold the BLANK button until the value
changes. This operation will replace the stored BLANK value.
6. Remove the sampling tubing from the DI water and place it in the standard solution container.
7. Verify or enter the value of the standard solution used for the calibration by pressing PROGRAM
→ CALIBRATION MENU → STANDARD.
8. From the main menu select RUN → Cycle Ch 1. When the new analysis cycle begins the analyzer
will sample the standard solution and automatically run 1 analysis cycle, then stop and enter the
Stand-By (Wait) mode. Repeat 2 times.
9. After the third cycle press PROGRAM → CALIBRATION MENU to open the calibration menu
window, press and hold the CAL button until the FACTOR value changes. This operation will
replace the stored FACTOR value.
10. Remove the sample tube from the standard solution and reconnect the sample tube to the fast-
loop reservoir (if present).
After manual calibration enable the 4-20 mA output, pressing PROGRAM → SETTINGS → OUTPUT
SIGNAL → ENABLE/DISABLE. Start the sampling cycle by pressing RUN → Start On-Line.
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