DR-2 CD™
CP potential measurement and current-density sensor
![dr-2-cd3-1296px.jpg](/media/5393/dr-2-cd3-1296px.jpg?width=1296&height=0&mode=crop)
Easily installed in a few critical areas, DR-2 CD™ can provide valuable data about CP and polarization
The DR-2 CD™ combines the standard DR-2™ dual element reference electrode with a 1 sq. meter current-density monitor. The two types of instruments together allow engineers to monitor polarization of a structure. The instrument may be either hardwired to a surface location or read subsea with a SunStation™ readout.
An Ag/AgCl reference electrode provides very accurate potential data for monitoring polarization of the structure. The heavy-duty zinc-electrode element provides a reliable, long-term data source alongside the more accurate but less stable silver chloride.
![IMG_0041-Quick Preset_1024x768.jpg](/media/1129/img_0041-quick-preset_1024x768.jpg?width=538&height=359&mode=crop)
![close up dr-2 cd-TB_1024x768.jpg](/media/1680/close-up-dr-2-cd-tb_1024x768.jpg?width=538&height=359&mode=crop)
![IMG_0040 (2)-Quick Preset_1024x768.jpg](/media/1128/img_0040-2-quick-preset_1024x768.jpg?width=538&height=359&mode=crop)
Installation
Monitor critical areas: DR-2 CD™ is shown mounted at a critical point on the structure.
Monitoring options: Polatrak® fixed monitoring components can be wired to the surface and monitored through a dedicated panel, or they can wire into the SCADA system.
Larger surface area: The current-density sensor looks like a large metal fan with one sq. m of surface area. The readings from this extra monitor allow the operator to calculate data about the polarization of the structure.
Rugged cable: DR-2 CD™ has an armored 4-conductor cable wired to the surface for readouts or data transmission.
![Turbine 5 RD-1.jpg](/media/1261/turbine-5-rd-1.jpg?width=628&height=471&mode=crop)