Bante904P Portable Conductivity/DO Meter
22
Electrode Care and Maintenance
Conductivity electrode
•
DO NOT touch the measurement area of electrode and always make sure that is clean.
•
If there is a build-up of solids inside the measurement area, these should be removed very carefully with a cotton bud soaked in solvent, taking care
not to touch the metal parts of the inner cell. After the solids are removed, the electrode must be recalibrated.
Dissolved oxygen probe
•
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
Electrode dried out
Soak the conductivity electrode in tap water for a few minutes.
Measured value is out of range
Check the electrode whether clogged, dirty or broken.
Incorrect calibration solutions
Using the fresh calibration solutions for calibration.
Setting value does not match calibration solution
Reset the calibration value.
DO electrolyte solution is depleted
Refilling electrolyte solution.
Zero oxygen solution is contaminated
Replace the calibration solution.
Keypad is not working properly
Replace the batteries.
Measurement area
Membrane cap
Cathode and Anode
