17
B. Dissolved Oxygen Calibration
The 9020M can be calibrated quickly and easily in air.
1. Connect the DO probe LD-900G-1 to the unit and turn the unit
on. Rinse the probe well with distilled water. For best accuracy,
wipe the end of the probe dry. Do not touch the membrane.
2. Hold the probe in the air gently with the sensor facing down
and press “MODE” key to select “Dissolved Oxygen in %”
mode.
3. Allow temperature reading to stabilize, press the “CAL” key to
enter the “Calibration” mode. The “CAL” icon appears on the
LCD. The main screen will display “1013mBar” (factory default
value). The meter is now ready for atmospheric pressure
calibration.
4. To change the pressure factor, use the “UP” and “DOWN”
keys to adjust the value between 600 and 1100mBar. Press
“ENTER” key to save the new value and the unit will
automatically go into the next calibration parameter which is
the value of 100% saturation in air. If “MODE” key is pressed
instead of the “ENTER” key, any changes made will be
cancelled and the previous calibration settings will be retained.
5. In this interface, the user can views the calibration value in the
secondary display. Once the value in the main display
stabilizes, press “ENTER” key to save the new value and the
unit will automatically go into the salinity compensation
parameter. If “MODE” key is pressed instead of the “ENTER”
key, any changes made will be cancelled and the previous
calibration settings will be retained.
6. The salinity default factor value is 0.0 ppt. To change the
salinity compensation factor, use the “UP” and “DOWN” keys
to adjust the value between 0 and 40 ppt. Press “ENTER” key
to save the new value and the unit will automatically switch to
“Measurement” mode. Calibration is now complete. If “MODE”
key is pressed instead of the “ENTER” key, any changes
made will be cancelled and the previous calibration settings
will be retained and will automatically switch to “Measurement”
mode.
C. Dissolved Oxygen Measurements
Press “MODE” key to choose the dissolved oxygen in % mode or
dissolved oxygen in ppm mode. Rinse the DO probe with distilled
water and immerse it in the sample to be measured.
Summary of Contents for VisionPlus 9020M
Page 1: ...9020M 02270148 9020M...
Page 2: ...1 2 2 2 3 3 A 3 B 4 5 A 5 B 6 C 7 D 7 8 9 10...
Page 3: ...2 9020M 9020M 9V EEPROM LCD 9020M 50 9020M LD 900G 01 9020M 50 60HZ JENCO 9020M 1 2 3 JENCO...
Page 4: ...3 LCD BAT 1 1 2 9V 3 A 1 2 3 4 5 10 8 9 7 6 11 12 14 13 LCD...
Page 7: ...6 1 2 3 4 B 9020M 1 LD 900G 1 2 MODE...
Page 11: ...10 JENCO 18 201601 57619600 57619008 57619240...
