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Idronaut - Model OCEAN SEVEN 310 - CTD ...

Idronaut - Model OCEAN SEVEN 310 -CTD Multiparameter probe

The OCEAN SEVEN 310 multiparameter CTD represents a real breakthrough in the concept of miniaturization, integration and performance. Thanks to the adoption of a new generation of electronic devices, the OS310 can interface several analogue and digital sensors and can guarantee sampling rates up to 28Hz. The operator can easily select the OS310 sampling rate from 1Hz to 28Hz (samples per second), according to the required monitoring or profiling activity. The OS310 CTD can be easily integrated/adapted to third-party systems like floating profilers and/or oceanographic moorings, ROVs and AUVs. IDRONAUT prides itself on the design of its full ocean depth, low maintenance sensors. The OS310 does not require pumps or any other external device to flush the sensors, which minimizes its power consumption. The OS310 is characterized by a drift free sensors preamplifier.

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TEMPERATURE SENSOR
Features a very fast platinum resistance thermometer (response time: 50 ms). Negligible self-heating effect. Optionally combined C/T sensor featuring a 7ms fast thermistor (20 ms after processing) integrated in the conductivity cell is available upon request.

CONDUCTIVITY CELL
The high accuracy seven platinum ring quartz conductivity cell (patented) can be cleaned in the field without the need for recalibration. This unique quartz cell employs a large diameter (8mm) and a short length (46mm) to guarantee self-flushing and no clogging after long-term deployment even in biologically active waters. Furthermore, an optional UV LED (280 nm), integrated into the conductivity cell, sterilizes the sample under measurement, thus avoiding the early growth of biofouling inside the quartz measuring cell.

DATA STORAGE
The OS310 CTD is equipped with a 4Gbyte data memory, which allows the storing of about 250 millions data sets, each one being composed of the reading of all the installed sensors plus the acquisition date and time. The OS310 communicates at a speed up to 115k2 bps, thus keeping data uploading time to a minimum.

SELF-RECORDING MODES:
•Continuous: Sampling at configurable rate.
•Pressure: Data is sampled at pressure intervals.
•Timed: Data is sampled at configured time interval.
•Conditional: Data is sampled when a threshold value is reached.
•Burst: Burst sampling at configured time intervals

SOFTWARE
Idronaut software allow the operator to configure the OS310 data acquisition, logger functions and upload data from the memory. They are:
• WTERM: Windows Terminal emulation software to easily communicate with the OS310 using the built-in operator interface and communication protocol. Users are easily able to view real time data, configure the probe for unattended acquisition and upload stored data.
• REDAS-5: Windows Data processing and retrieval software, which allows the display and plotting of conductivity, temperature, pressure and derived variables such as salinity, sound speed and water density, according to UNESCO formulas and recommendations.