D-2 Incorporated stands at the forefront of developing advanced conductivity, temperature, and depth (CTD) measurement technologies tailored for autonomous underwater vehicles (AUVs), remotely operated vehicles (ROVs), and various unmanned marine survey platforms, including gliders and USV-towed sensor arrays. Our diverse solutions cater to both shallow and deep-sea applications, with the versatility to customize products according to specific client needs.
With over 20 years of experience supplying CTD and CT sensors to clients across 95 nations, we have built a strong reputation as a premier supplier in the field, renowned for our extraordinary customer service and support. All our products are crafted in-house at our ISO 9001:2015-certified facilities in the United states, utilizing components sourced domestically.
Innovative CTD Sensors for Marine Exploration
Hybrid CTD Sensor
Advanced conductivity, temperature, and depth sensing in a compact design
The Hybrid CTD employs a groundbreaking approach to conductivity measurement,merging the benefits of both electrode and inductive sensing methods,ensuring remarkable accuracy and precision at depths reaching 11,000 meters. It features a high-resolution strain-gauge pressure sensor, state-of-the-art solid-state electronics, and a selection of industry-standard or top-tier temperature sensors.
This sensorS proprietary technology allows for a more compact and lightweight design, making it perfect for AUVs and underwater robotic systems, while also enabling free-flushing without the need for a pump in most scenarios.
The Hybrid CTD boasts an extensive array of features that surpass any other deep-sea CTD sensing solution available. Users can select high-speed sampling rates of up to 25 Hz, and additional third-party sensors can be integrated via A/D and serial interfaces. Data output options include USB, RS-232, or RS-485, and can also be transmitted through a wire line using commercially available telemetry systems.
This robust sensor can be constructed from aluminum, stainless steel, or titanium to meet various depth and environmental conditions. Custom and OEM variants are also available, allowing for tailored solutions for your specific underwater vehicle.
Discover more: Hybrid CTD Sensor
UL-CTD Sensor
High-performance conductivity, temperature, and depth sensor with minimal power usage
The UL-CTD delivers the same exceptional precision and depth capabilities as our Hybrid CTD, but with a power consumption of only 50 mW, making it one of the most energy-efficient closed-field CTDs on the market. It offers user-selectable sampling rates of 1 or 2 Hz.
Available in aluminum, stainless steel, or titanium housings, the sensor’s compact design and low power requirements make it ideal for SWaP-constrained systems such as small UUVs, ocean gliders, and USV-towed arrays.
Learn more: UL-CTD Sensor
Ocean CT Sensor
Affordable conductivity and temperature measurement for shallow environments
our cost-effective Ocean CT sensor offers a reliable solution for measuring conductivity and temperature at depths of up to 500 meters. It combines an inductive conductivity cell with a high-stability glass tube housing and an industry-standard temperature thermistor, providing high sensitivity and enabling free-flushing.
The sensor supports continuous sampling at 2 Hz and outputs conductivity, temperature, and salinity data in ASCII format via CMOS, RS-485, or RS-232 interfaces. All units are fully calibrated in our ISO-17025-certified laboratory and can be equipped with anti-biofouling coatings for enhanced durability during extended deployments.
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CTD Sensor Calibration & Custom Solutions
Our cutting-edge full ocean depth CTD sensor calibration facility, located on the East Coast of the United States, enables us to provide calibration services for both our sensors and third-party devices with optimal accuracy and quick turnaround times, often within just 5 business days.
We also offer custom and OEM services, providing tailored CTD solutions for integration into any unmanned vehicle platform or existing sensor suite. For more information about these services, please reach out to us.
