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Offshore Structure Protection >
Monitoring Equipment for
Cathodic Protection
Overview of Polatrak® CP Probes
by Deepwater Corrosion
Services
Choice of probes for offshore, subsea
cathodic protection status measurement.
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ROV II probe performing a
pipeline survey. |
ROV II Probe with dual Ag/AgCl
reference electrodes. |
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Deep-C-Meter kit includes an
ROV II probe,
pictured here on the ROV T-Handle. |
CP Gun delivered in a
protective case. |
CP Gun™
- Twin Ag/AgCl Electrodes
- Contact Probe (Bathycorrometer Style)
- Replaceable Electrodes
- Rated to 1000 fsw (305 m)
- Integral Voltage Readout
- Diver Held
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DC-II™
Drop Cell
- Twin Ag/AgCl Electrodes
- Proximity Probe (Drop Cell or Dip Cell
Style)
- Rated to 1500 fsw (458 m)
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ROV II™ Probe
- Twin Ag/AgCl Electrodes
- Proximity or Contact Probe
- Rated to 10,000 fsw (3050 m)
- Diver Held or ROV interfaced
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Deep-C-Meter™
- Twin Ag/AgCl Electrodes
- Contact Probe
- Replaceable Electrodes
- Integral Voltage Readout
- Rated to 10,000 fsw (3050 m)
- ROV interfaced
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Close
Proximity Electrode
- Twin Ag/AgCl Electrodes
- Proximity Probe
- Rated to 1000 fsw (305 m)
- Diver Held
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DC-II |
CP Gun |
Prox Electrode |
ROV II |
Deep-C-Meter |
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Electrode type |
Twin Ag/AgCl |
Twin Ag/AgCl |
Twin Ag/AgCl |
Twin Ag/AgCl |
Twin Ag/AgCl |
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Replaceable electrodes? |
No |
Yes |
No |
Yes |
Yes |
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Depth rating |
1500 ft |
1000 ft |
1000 ft |
10,000 ft |
10,000 ft |
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Integral voltage readout? |
No |
Yes |
No |
No |
Yes |
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Can be ROV interfaced? |
No |
Yes |
Yes |
Yes |
No |
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Uses |
Drop cell for platform or
dock surveys |
Diver or ROV
assisted surveys where a limited no. of readings are
needed |
Diver assisted platform
inspections |
Any underwater inspection
requiring tip contact capability |
Deep water ROV inspections
(pipelines, mooring, subsea equipment etc.) |
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