SonTek CastAway-CTD

The system incorporates modern technical features which allow it to achieve a 5 Hz response time, fine spatial resolution, and high accuracy. It uses a six electrode flow-through conductivity cell with zero external fields and a rapid response thermistor to attain high measurement accuracy. The instrument is simple to deploy, does not require a pump, and is hydrodynamically designed to free fall at a rate of 1 m/s.

The integrated real-time data display screen, internal GPS sensor, and automated wireless data transfer are unique features that simplify data collection.

Each CastAway-CTD cast is referenced with time and location using its built-in GPS receiver. Latitude and longitude are acquired both before and after each profile. Plots of conductivity, temperature, salinity, and sound speed versus depth can be viewed immediately on the CastAway's integrated color LCD screen in the field. Raw data can be easily downloaded via Bluetooth to a Windows computer for detailed analysis and /or export.

*US Patent #8272262

A quick reminder:  you will want to get your CastAway-CTD calibrated annually to:

• Maintain high-accuracy conductivity and temperature data;
• Keep data to spec and avoid the possibility of drift, impacting accuracy;
• Ensure your CastAway is clean and free of dirt, oil, salt buildup, and environmental contamination.
• Turnaround time is about 2-3 weeks.