A DS 4 20
| D I SS O LV ED OX YG EN SEN S O R | O I/A DS 4 2 0 - EN R E V. B
11
9
If
2-Point Cal
is displayed, go to step 11.
If
2-Point Cal
is not displayed, press the
key (below the
Edit
prompt).
The
Calibration Type
selection page is displayed:
Calibration Type
1-Point Cal
2-Point Cal
Cancel
OK
10
Use the
/
keys to select
2-Point Cal
and press the
key (below the
OK
prompt).
The
Calibration Type
page is displayed:
S1: DO
Next
Edit
Calibration Type
2-Point Cal
11
Press the
key below the
Next
prompt).
The
Calibrate/Start Span Cal?
page is displayed:
Calibrate
Start Span Cal ?
Place in 100 % Sat
Abort
Continue
12
Press the
key (below the
Continue
prompt).
The
Calibrate
page is displayed:
Calibrate
PV 98.26 %
Tmp 25.22 °C
Setting-Please Wait
Abort
13
When span calibration is complete, the
Calibrate/Start Zero
Cal?
page is displayed:
Calibrate
Start Zero Cal?
Place in 0 % Sat
Abort
Continue
14
Remove the sponge wafer from the calibration pot.
15
Fill calibration chamber with fresh sodium sulfite solution,
leaving at least 13 mm (0.5 in) between the surface of the
sensing element and the bottom of the chamber.
16
Allow 5 to 10 minutes for temperature stabilization prior to
continuing the calibration procedure.
17
Press the
key (below the
Continue
prompt).
The
Calibrate
page is displayed:
Calibrate
PV 2.31 %
Tmp 25.32 °C
Setting-Please Wait
Abort
