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5.5.1 Manual salinity compensation (Hnd)
(A) In parameter setting P3.3, select manual salinity
compensation (Hnd). Operation refers to P3.3.
(B) In parameter setting P3.4, input salinity value (0~45ppt),
Operation refers to P3.4.
(C) Connect DO probe to take DO measurement.
5.5.2 Automatic salinity compensation (Aut)
(A)
Connect salinity probe to meter;
(B)
Switch parameter setting to P3.3, select auto. salinity
compensation (
Aut
), Operation refers to P3.3.
(C)
Switch parameter setting to P3.4, press to enter salinity
calibration mode. Submerge the salinity probe in 12.88mS/cm
conductivity calibration solution, stir gentlely and allow it to stay
in the calibration solution for a while. When the reading is stable
and displays on the LCD, press to calibrate, LCD
displays correct salinity value (the calibration procedure refer
to Figure –13). Press to return to measurement mode.
Special notes:
(A)
Use 12.88mS/cm conductivity calibration solution to calibrate salinity. If the standard
solution is wrong,
Err
icon will be flashing at the bottom right of LCD if is pressed,
indicating invalid calibration.
(B)
Since salinity calibration is done by the factory before shipment. It
is not necessary to perform salinity calibration during initial use.
Only perform salinity calibration when replacing a new electrode,
or when the electrode is unused for a long time.
(C)
For auto. salinity compensation, salinity probe must be connected,
As shown in figure-14. Users can fit DO probe and salinity probe
together into the clip to measure them simultaneously.
6
Calibration
6.1
Saturated Oxygen Calibration
(A)
This procedure requires the use of a calibration sleeve to allow the probe to be calibrated
in a humidity-saturated atmosphere.
(B)
Check if the sponge in the calibration sleeve is damp. Attach the calibration sleeve to
Fig.-14
Fig.-13
