DR-2™ Polarization Monitor
Polatrak® Cathodic Protection Monitoring
in conjunction with Deepwater Corrosion Inc.
A rugged dual element reference electrode to provide CP status for 20 years.
Product OverviewThe Deepwater Polatrak DR-2 CD polarization monitor combines the standard DR-2 dual-element reference electrode with a 1 square meter current density monitor, thus providing a compact package which will give accurate polarization data from a single instrument. The instrument may be either hard wired to a surface location or locally into a SunStation™ readout module. The sintered Ag/AgCl reference electrode provides very accurate potential data to monitor polarization of the structure. The heavy-duty zinc electrode element provides a long-term, ultra-reliable, low-resolution electrode. The compact current density coupon allows placement in confined spaces. The rugged dual-element (Ag/AgCl sw / Zinc) reference electrode is designed for weld-on, bolt-on or clamp-on attachment to an offshore structure. Designed for permanent monitoring of cathodic protection systems, the electrode has a 20-year design life. Added to the back of the instrument is a 1 square meter current density monitoring array, such that polarization data may be logged directly from the instrument. Use of permanent monitoring systems has grown recently, based on increased integrity emphasis and the ease of data telemetry. The DR-2 CD represents the latest innovation in cathodic protection monitoring from the world’s leading supplier of these systems. Applications
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![]() The DR2 CD combines two instruments: the DR-2 reference cell (yellow and black) and a current density monitor (top array). ![]() DR-2 CD shown in-situ on bare framing ![]() Offshore installation in progress. |
Main Benefits
Specifications |
Zinc Electrode |
Material Dimensions Weight Anti-passivation Accuracy |
Zinc (high purity 99.95%) 6 x 5 x 11.5" 12 lbs (5.45 kg) Embedded carbon steel rods ±0.02 V |
Ag/AgCl Electrode |
Material Dimensions Weight Accuracy |
Sintered Ag/AgCl w/ silver
wire core 0.47" dia. x 0.20" (12 mm dia. x 5 mm) 0.09 oz (2.5 g) ±0.005 V |
Electrode Housing | Material Dimensions |
Black Delrin 18" x 5" x 4" (45.7 x 12.7 x 10.2 cm) |
Cable Encapsulation | Type | Cold-mold soft polyurethane made inside embedded PVC condulet within electrode housing. |
Electrode Frame | Material Coating Conduduit interface |
ASTM A36 carbon steel Marine epoxy 2" pipe coupling or 2" 150# blind flange |
Dimensions | W x H x D | 27” x 6” x 6” (68.6 x 15.2 x 15.2 cm) |
Current Density Fins | Material Insulator Finish Shunt |
ASTM A36 carbon steel, 0.125" (3 mm) plate Natural Ddelrin isolation plate and spacers Sandblast 1 mV = 10 mA per square meter |
Cable | Type |
2 x #12 AWG PVC insulated, PU bedded, DGSWA, HMWPE sheathed available on request |