Ocean Seven 316S
SELF-RECORDING, PROFILING, REALTIME TELEMETRY 7000m, MULTIPARAMETER
The OCEAN SEVEN 316S CTD multiparameter probe is equipped with the IDRONAUT full ocean depth long-term stability sensors, central to which, is the high accuracy seven-platinum-ring quartz conductivity cell. The OS316S does not require pump or any other external device to flush the sensors, which minimizes its power consumption and allows the use in Arctica and Antarctica. For added flexibility, the OS316S can be easily interfaced/integrated on buoys, ROVs and AUVs, thus making this probe an ideal choice for both on-line profiling and self-recording moored applications. Optional data telemetry is available for on-line full ocean depth, real-time communications. The OS316S can optionally accommodate analogue and digital inputs dedicated to interface external sensors.
FEATURES AND OPTIONS AVAILABLE
The high accuracy seven-platinum-ring quartz conductivity cell (patented) can be cleaned in the field without the need for re-calibration. 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, optionally two UV-LED (Ultraviolet, 280 nm @500μW, Light-Emitting Diode) are integrated into the conductivity cell, sterilizing the sample under measurement, thus avoiding the early growth of biofouling inside the quartz measuring cell.
Features a very fast platinum resistance thermometer (response time: 50ms). Negligible self-heating effect. Optionally combined C/T sensor featuring a 7ms fast thermistor (20ms after processing) integrated in the conductivity cell is available upon request.
Allows storage of up to 300M dataset, each one being composed of the reading of all installed sensors plus the date & time, using the internal 4 GByte data memory. The OS316S communicates at a default speed of 38k4 bps, thus keeping data uploading time to a minimum.
- CONTINUOUS:Sampling at configurable rate.
- PRESSURE:Data is sampled at pressure intervals.
- TIMED:Data is sampled at time interval.
- CONDITIONAL:Data is sampled when a threshold value is reached.
- BURST:Burst sampling at time intervals.
| Parameter | Range | Initial Accuracy | Resolution | Response Time | |
|---|---|---|---|---|---|
| Pressure | 0..7000 dbar (3) | ±0.05% FS | 0.002% FS | 50 ms (1) | |
| Temperature | -5..+50 °C | ±0.003 °C | 0.0001 °C | 50 ms (1) | |
| Conductivity | Salt water | 0..70 mS/cm (8) | ±0.003 mS/cm | 0.0001 mS/cm | 50 ms (1) |
| Fresh water | 0..7000 µS/cm | ±5 µS/cm | 0.1 µS/cm | 50 ms (1) | |
| Brine | 0..350 mS/cm (5) | ±0.010 mS/cm | 0.0001 mS/cm | 50 ms (1) | |
| Oxygen | Polarographic | 0..50 ppm | ±0.1 ppm | 0.01 ppm | 3 s (2) |
| 0..500 %sat. | ±1 %sat. | 0.1 %sat. | 3 s (2) | ||
| pH | 1..13 pH | ±0.01 pH | 0.0001 pH | 3 s (4) | |
| Redox | -1000..+1000mV | ±1mV | 0.1 mV | 3 s | |
| Optical | 0..44 mg/l | ±0.1 mg/l | 0.025 mg/l | 3 s (6) or 1 s (7) | |
| 0..500 %sat. | ±1 %sat. | 0.25 %sat. | 3 s (6) or 1 s (7) |
(1) At 1 m/sec flow rate.
(2) From nitrogen to air.
(3) Other standard pressure transducers: 10,40,100,200,500,1000,2000,4000,7000,10000 dbar.
(4) Differential pH preamplifier, 1013 ÷ 1014 ohm input impedance.
(5) Optional extended range, available upon request.
(6) Blue label membrane cap for profiling and monitoring.
(7) White label membrane cap for fast profiling.
(8) Extended ranges available upon request.
The fundamental properties of seawater like: Salinity, Water Density, Oxygen ppm are obtained using the algorithms described in the UNESCO “Technical papers in marine science no.44”.
The fresh water properties like: TDS (Total Dissolved Solids), Fresh Water Conductivity corrected at 20°C and 25°C are automatically calculated.
| Housing | 1500 dbar White POM | 2000 dbar White POM | 7000 dbar Titanium |
|---|---|---|---|
| Diameter | 100 mm | 105 mm | 89 mm |
| Length | 710 mm | 710 mm | 720 mm |
| Weight in air | 4.2 Kg | 4.2 Kg | 8.0 Kg |
| Weight in water | 2.2 Kg | 2.2 Kg | 4.3 Kg |
| Parameter | Range | Initial Accuracy | Resolution | Response Time |
|---|---|---|---|---|
| ALTIMETER | 0.1m – 100m | 1mm | ||
| Seapoint Turbidity Meter | 0..>2500 FTU | 0.1 FTU | 0.025 FTU | 3 s (2) |
| Seapoint Chlorophyll Fluorometer | 0..150 µg/l | 0.02 µg/l | 0.01 µg/l | 3 s (2) |
| LI-COR LI-192SA / LI-193SA PAR | 0..10 µA | 0.05 µA | 0.01 µA | |
| CHELSEA UNILUX / TRILUX | 0..100 µg/l (3) | |||
| TURNER DESIGNS C-FLUORTM (4) | 0..100 µg/l (3) | 0.03 µg/l | 0.01 µg/l |
Sampling system: GO ROSETTE 1018 / IDRONAUT MISS / SBE32 CAROUSEL.
(2) Provided with auto-range: 25, 125, 500, >4000 FTU; 5, 15, 50, 150 µg/l.
(3) Chlorophyll a, Phycocyanin, Phycoerythrin for algae monitoring; Rhodamine WT or Fluorescein for dye tracing applications; Nephelometer for turbidity monitoring.
(4)Alternatively it is possible to interface the Turner Designs CYCLOPS-7FTM. Up to 6 Fluorometers can be interfaced through the Turner Designs C3TM/C6PTM.
For more information and warranty policy about Turner Designs products, please visit the manufacturer’s website: C-FLUORTM, CYCLOPS-7FTM, C3TM, C6PTM.
CYCLOPS-7FTM, C-FLUORTM, C3TM, C6PTM trademarks are property of Turner Designs, Inc.
Idronaut software allow the operator to configure the OS316S data acquisition, logger functions and upload data from the memory. They are:
- WTERM: Windows Terminal emulation software to easily communicate with the OS316S 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.
| Interfaces: | Wired: RS232C, RS485, Telemetry QAM. Wireless: Bluetooth. |
| Sampling rate: | Up to 28 Hz. |
| Power Supply: | 9...32 VDC. Running: 70 mA @ 12VDC. Standby: 8 μA @ 12VDC. |
| PORTABLE and MKPlus DATA TELEMETRY DECK UNITs: | The Telemetry deck unit powers and interfaces, by coaxial oceanographic cables, the OS316S with a PC. |
| MANUAL PORTABLE WINCH: | Includes 2-way or 5-way slip ring and hold: up to 350 m of 5 mm polyurethane jacketed armored cable or up to 200 m of 8.3 mm polyurethane multi-conductor shielded cable. |
| TITANIUM PROTECTIVE CAGES: | Sensors and/or upper connectors protection: Ø 260 mm. Mooring frame for the CTD and additional probes available. |
| EXTERNAL SUBMERSIBLE RECHARGEABLE BATTERY PACKS: | 14.4VDC (no. 12 NiMH cells), 4.5Ah, Ø 75 x 315 mm, 1500(POM housing) or 7000(Titanium housing) meters max. depth. |
