14
Electrode Care and Maintenance
•
Always keep the membrane of the dissolved oxygen probe is wet or moist.
•
If you do not use the probe for long periods,
please screw off membrane cap and rinse the cathode,
anode and membrane with deionized water, then
soak up residual water on them with filter pape. Install the probe again.
Troubleshooting
LCD DISPLAY
CAUSE
CORRECTIVE ACTION
DO probe does not connect to meter
Check the connector of probe.
Measured value is out of range
Check the DO membrane whether clogged, dirty or broken.
Electrolyte solution is depleted
Refilling electrolyte solution.
Zero oxygen solution is contaminated
Replace the calibration solution.
Keypad is not working properly
Replace the batteries.
Specifications
Dissolved Oxygen
Model
DO901
Range
0.00~20.00mg/L
Accuracy
± 0.5mg/L
Resolution
0.01mg/L
Calibration Points
1 or 2 points
% Saturation of Oxygen
Range
0.0~200.0%
Accuracy
± 2.0%
Resolution
0.1%
Others
Temperature Compensation
0~50° C, 32~122° F, Automatic
Pressure Correction
60.0~112.5
kPa, 450~850
mmHg
Salinity Correction
0~50g/L
Memory
Stores up to 100 data sets
Output
USB communication interface
Power Requirements
3 ×
1.5V “AA” batteries or DC5V power adpter
Dimensions
170 (L) × 85 (W) × 30 (H)mm
Weight
300g
Membrane cap
Cathode and Anode
DO901 Portable Dissolved Oxygen Meter
