Accumet XL 20, Руководство пользователя

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DO Setup:
Set Salinity / Set Alarm Limits
XL40 and 60 meters
Set Salinity
Water containing high levels of dissolved salts reduces dissolved oxygen in that water versus
water with little or no dissolved salts. The dissolved salts alter the relationship between the partial
pressure of oxygen and the oxygen concentration in water. By setting the salinity (in ppt) of your
sample, the XL40 and XL60 meter will compensate for the impact of salinity on the partial
pressure/oxygen concentration relationship of your sample.
The salinity can be set from 0 to 45 ppt.
To set Salinity
1. The current internal salinity value is displayed on the Salinity box .
2. Touch the Salinity box and use the numeric keypad on the screen to enter the salinity of
your sample. The BS key allows you to remove characters that are incorrectly entered.
3. Touch Enter on the keypad to accept the salinity value and return to the Setup screen.
Set Alarm Limits
This option allows you to set alarm limits for the DO measuring mode. If the DO value of the
measurement is outside of the boundaries set by the minimum and maximum limits, an audio and
visual warning will appear to let you know that your sample measurement was outside of the set
limits.
The Alarm Limit can be set from 0 to 600% Sat, 0 to 60 mg/L and 0 to 1272 mbar at the
atmospheric pressure of 1013 mbar.
To set Alarm Limits
1. Touch ON or OFF to set the status of the alarm of DO mode
2. Touch the Low box and use numeric keypad to enter the new limit values. The BS key
allows you to remove characters that are incorrectly entered.
3. Touch Enter on the keypad to accept this limit and return to the Setup screen.
4. Touch the High box and use numeric keypad to enter the new limit values. The BS key
allows you to remove characters that are incorrectly entered.
5. Touch Enter on the keypad to accept this limit and return to the Setup screen.