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CORROSION TESTING PROBE ROV-II™ CP PROBE OPERATION MANUAL Twin reference Can be used with Works as either electrodes for ROVs or as a a contact or online calibration diver-held probe proximity probe Deepwater Corrosion Services Inc. +1 (713) 983 7117 | Email: sales@stoprust.com www.polatrak.com...
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4.2.5 Topside, the system can be wired directly to a pair of digital multimeters (Fig. 7) or a Polatrak Deep C Meter™ (Fig. 6). It can also be wired directly into a video annotator with an input impedance of at least 1.0 MΩ.
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5.1 General As with any subsea measurement device, it is important to cali- brate the ROV-II™ probe to ensure that the reference electrodes are working properly and that there is no damage to the probe. The probe comes calibrated from the factory. Calibration should be checked before and after each dive.
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Pin socket 3: Reference electrode #2 (R2) 5.4 Subsea calibration The cell-to-cell value can be checked at any time while the ROV-II™ probe is deployed subsea. Subsea calibration should be performed with the entire cable immersed, as it will quickly www.polatrak.com 13813 FM 529 Rd, Houston, TX 77041 | US +1 (713) 983 7117 | Email: sales@stoprust.com...
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ROV-II™ MANUAL detect any cable damage. Diver surveys using the ROV-II™ probe should have two topside multimeters connected to the dive cable. ROV-assisted surveys should have the Polatrak® Deep C Meter™ alongside the probe to provide a subsea LED readout of the voltages.
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Please handle with care. 9.2 Reference electrode element replacement Spare plug-in electrode elements are available for the ROV-II probe. These elements will also work in the Polatrak® CP Gun™. If one element or more needs to be changed, follow this procedure: 9.2.1 Remove the probe from the ROV and un-mate the connector.
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(section 9.2). • There is damage to the tail assembly cable or umbilical cable. When recovering the ROV-II™ probe from the dive, any cable dam- age can be quickly located and repaired. Monitor the cell-to-cell value as the cable comes out of the water. If the problem is cable damage, the cell-to-cell value will revert to the acceptable range (10 mV or less) as soon as the damaged area of cable clears the water.
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LED readouts are blank Pressure housing is Replace batteries flooded Go to backup; return unit to Polatrak. 10.4 If a problem persists or is not listed, please call our hotline at (713) 983-7117 and ask for Polatrak ® technical support.
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