The Lcd Display; Operational Procedures; Measurement Modes; Saving, Viewing And Deleting Data - VWR DO210 Manuel D'exploitation

THE LCD DISPLAY

1. BAT: Low battery indicator.
2. CAL: Calibration mode indicator.
3. SAL ppt: Displays during calibration
when user is prompted for the
approximate salinity of the sample in
parts per thousand (ppt).
4. mBar: Displays during calibration to
prompt user for barometric pressure.
5. Main display for dissolved oxygen
values.
6. %/ppm: Unit indicators.
7. ºC: Temperature display.

OPERATIONAL PROCEDURES

Press to turn the unit on or off. The instrument will perform a self-diagnostic test, during
which an "ovEr" message may appear on the display. This is normal. After the warm up is
complete the message will disappear. After the self-diagnostic test completes, the temperature
displays in the lower right of the display, and the unit is ready for operation. Immerse the probe
halfway into the sample solution. If possible, do not allow probe to touch any solid object in the
solution. Allow no air bubbles around the probe. When the unit is not in use, turn it off to save
battery life. The instrument has a 30 minute auto shut off feature when not in use.
NOTE: During an oxygen measurement, the probe must be moved approximately 1/2 ft per
second to overcome the inherent consumption of oxygen by the sensor.

MEASUREMENT MODES

This unit provides three distinct measurements:
1. Temperature - Current solution temperature continually displays.
2. Dissolved Oxygen % - Measurement of oxygen in percent saturation.
3. Dissolved Oxygen ppm - Measurement of oxygen in ppm (mg/L).
Carefully observe the units displayed at the far side of the LCD to determine the desired mode.

SAVING, VIEWING AND DELETING DATA

The DO210 can save 50 data records. When in measurement mode, press
The instrument will confirm the saved data by displaying SAVE and the record number for one
second. "Full" is displayed when trying to save data and the memory is full.
To view saved data, press mode until RECALL is displayed and then press
Down arrow keys to review different saved records. Press Mode to escape back to
measurement mode.
To delete data records, press Mode while in measurement mode until DELETE is displayed.
Press  . "All" will be displayed and blinking. Press the Up or Down arrow key to switch
between delete 'All' or 'Each' options. Select either 'All' or 'Each' by pressing  while that
option is displayed.
If 'All' is selected, all records will be deleted from memory and 'None' will be displayed. Press
Mode twice to return to the measurement mode.
Figure2. LCD Display
3

to save a record.
.
Use the Up or