Hach-Lange NITRATAX sc - Manual (Page 23)

21
Operation
5. Close the hole of the back of the measuring path of 2 and 5 mm sensors with a sticky
tape that filled water cannot flow out.
6. Select OFFSET ADJUST and confirm.
7. Confirm the displayed OUTPUT MODE information.
8. FILL IN AQUA DEST PRESS ENTER TO CONTINUE is displayed. Remove the
sensor from the tank and the rinse measuring path with distilled water. Align the
measuring path horizontally and completely fill with distilled water. Confirm.
9. PRESS ENTER WHEN STABLE, CONC. X.X mg/l NO3, DEXT X.X mE is displayed.
Confirm when a stable value is reached.
10. Select WIPE. Wiping process occurs.
11. PRESS ENTER WHEN STABLE , CONC. X.X mg/l NO3, DEXT X.X mE is displayed.
Add distilled water until the measured value is stable and confirm.
12. Select CALIBRATE and confirm.
13. COMPLETE OFFSET X.X mE is displayed. Confirm.
14. PRESS ENTER WHEN STABLE, CONC. X.X mg/l NO3, DEXT X.X mE is displayed.
Confirm when a stable value is reached.
15. Select COMPLETE and confirm.
16. Select 1 SAMPLE CAL and confirm.
17. FILL IN STANDARD PRESS ENTER TO CONTINUE is displayed.
Select Option 1 or Option 2:
• Option 1: Insert the verification filter now to calibrate.
• Option 2: Adjust the sensor calibration using a standard solution (or a
user-specific measuring solution) and laboratory spectrophotometer.
Confirm.
18. PRESS ENTER WHEN STABLE, CONC. X.X mg/l NO3, DEXT X.X mE is displayed.
Note the mE value if working with the sample and confirm.
19. Select CALIBRATE. Adjust the XX.X mE value of the filter or sample from the
previously noted value and confirm.
20. Confirm COMPLETE FACTOR and the factor will be adjusted automatically.
21. PRESS ENTER WHEN STABLE, X.X mg/l NO3, X.X mE is displayed.
• Option 1: Completed after confirming. If this message is not displayed and
Option 1 was chosen, clean the lens and repeat.
• Option 2: Continue with the following steps.
22. Select WIPE and confirm.
23. PRESS ENTER WHEN STABLE, X.X mg/l NO3, X.X mE is displayed.
24. Check the values. Confirm when the mE value is close to noted previous one.
Option 2 is now completed.
25. Select COMPLETE and confirm.
Note: Only NITRATAXeco has a one point calibration which influences the offset.
26. The sensor calibration is completed.