SBG Systems Stellar-40
Conductivity, Temperature & Depth (CTD) Measurement Technologies for Unmanned Oceanography & Marine Survey
AUV CTD Compact conductivity, temperature & depth sensor for AUV & USV integration
AUV CTD

Compact conductivity, temperature & depth sensor for AUV & USV integration

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AUV CTD

The AUV CTD from D-2 Incorporated provides a precise and rugged sensing solution for conductivity, temperature, and depth measurements in uncrewed platforms including AUVs, UUVs, USVs, ROVs, and profiling floats. Its compact Delrin housing and oil-filled conductivity cell deliver long-term resilience in extreme ocean environments while maintaining low power consumption. Designed around D-2’s hybrid conductivity cell, the system provides closed-field precision without a pump, resulting in silent operation and significantly reduced electrical demand.

The sensor supports standard high-speed acquisition up to 32 Hz and an ultra-low-power mode consuming just 4 mA at 10 VDC with a 2 Hz rate. This flexibility allows deployment across a broad range of autonomous platforms, from deep-rated vehicles to lightweight gliders. Real-time RS-232 output, internal memory, and customizable fittings ensure rapid integration with existing mounts and systems. Combined with fast calibration turnaround times and robust environmental performance, the AUV CTD offers a dependable and adaptable option for advanced marine data collection.

Specifications:

Dimensions: 7.7 × 2.5 × 3.1 in
Power Consumption: 4mA at 10 VDC
Depth & Pressure Performance: Range: 0-11,500 dbar (meters) 16679 PSI
Resolution: 0.001% F.S., +/- 0.015% F.S., +/- 0.02% F.S. Year.
Response < 0.015 Sec
Conductivity Performance: Range: 0-7 S/M
Resolution: 0.00004
Initial Accuracy: +/- 0.0003 S/M
Typical Stability: +/- 0.0003
Temperature Performance: Range: -5°C to 35°C
Resolution: 0.0002
Initial Accuracy: +/- 0.001
Typical Stability: +/- 0.0002°C per Month

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