Aquaprobe
®
AP-7000 Instruction Manual
10401-00894 Rev M
12.2. Important Notes Regarding Long-Term Deployment
Whilst the AP-7000 features an effective electrode cleaning system, the Probe should not
be deployed and left for extended periods without regular checking, calibration and
maintenance.
The time period between maintenance visits depends heavily upon the deployment
conditions. For example, if the Probe is deployed in clean water, the only necessity should
be regular single point calibration of the electrodes. This should be done every 4 – 6
weeks.
If the Probe is deployed in water that is polluted, silt-laden or heavily affected by algal
growth, maintenance visits should be much more frequent.
It is very important to keep the cleaning brushes in good condition. The brushes should be
replaced as soon as they show any signs of clogging or deterioration.
Likewise, it is very important to keep the inside of the Probe Sleeve and End Cap clean and
free from any build up of algae or silt. The Probe Sleeve and End Cap form an integral part
of the optical measurement system. If they are allowed to become excessively dirty, the
accuracy of your readings will be affected.
It is strongly recommended that after initial deployment, maintenance visits are made on a
weekly basis in order to assess the rate of fouling. After several weeks, it should be
possible to establish the optimum time interval for routine maintenance at any given site.
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®
Ltd.
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