SBE - Model 19plus V2 -SeaCAT Profiler CTD

The SBE 19plus V2 SeaCAT measures conductivity, temperature, and pressure at 4 scans/sec (4 Hz) and provides high accuracy and resolution, reliability, and ease-of-use for a wide range of research, monitoring, and engineering applications. Pump-controlled, T-C ducted flow minimizes salinity spiking caused by ship heave and allows for slow descent rates without slowing sensor responses, improving dynamic accuracy and resolving small scale structure in the water column. The 19plus V2 supports numerous auxiliary sensors with six A/D channels and one RS-232 data channel. Data is recorded in memory and can also be output in real-time in engineering units or raw HEX. Nine alkaline D-cells provide power for up to 60 hours of profiling.

The 19plus V2 is commonly used autonomously, recording data internally. It can also provide real-time acquisition and display over short cables via the RS-232 interface; a load-bearing cable for hand-hauled, real-time profiling is available. External power and communication over 10,000 m of single-core, armored cable can be provided with the SBE 36 Deck Unit and PDIM. The 19plus V2 is easily integrated with a Sea-Bird Water Sampler; both real-time and autonomous auto-fire operations are possible.

In moored mode, the 19plus V2 records data at user-programmable intervals. This is easily configured with setup commands and by removing the profiling T-C Duct and installing optional anti-foulant devices.

Features

• Conductivity, Temperature, Pressure, and up to seven auxiliary sensors.
• User-programmable mode: profiling at 4 Hz, or moored sampling at user-programmable intervals.
• RS-232 interface, internal memory, and internal alkaline batteries (can be powered externally).
• Pump-controlled, T-C ducted flow to minimize salinity spiking.
• Depths to 600, 7000, or 10,500 m.
• Seasoft© V2 Windows software package (setup, data upload, real-time data acquisition, and data processing).
• Next generation of the SeaCAT family, field-proven since 1987.
• Five-year limited warranty.

Components

• Unique internal-field conductivity cell permits use of T-C Duct, minimizing salinity spiking.
• Aged and pressure-protected thermistor has a long history of exceptional accuracy and stability.
• Pressure sensor with temperature compensation is available in eight strain-gauge ranges (to 7000 m) and eleven Digiquartz® ranges (to 10,500 m). Note: Sampling rate 2 Hz when Digiquartz installed.
• Pump runs continuously (profiling mode), providing correlation of CTD and plumbed auxiliary sensor measurements.

Options

• Plastic (600 m) or titanium (7000 or 10,500 m) housing; XSG/AG or wet-pluggable MCBH connectors.
• SBE 5M pump for pumped conductivity; or SBE 5P or 5T pump for pumped conductivity and auxiliary sensor(s).
• Auxiliary sensors — dissolved oxygen (SBE 63 Optical DO Sensor or SBE 43 [membrane-type] DO Sensor), pH (profiling only; SBE 18 pH Sensor), fluorescence, radiance (PAR), light transmission, turbidity, altimeter etc.
• Stainless steel protection cage (For typical cage, see drawing 22009 for 19plus V2 with strain-gauge pressure sensor or 22010 for 19plus V2 with Digiquartz pressure sensor. For ice cage, see 22149 and photo on Gallery tab.).
• Rechargeable Nickel Metal Hydride (NiMH) batteries and charger.
• Moored mode conversion kit with anti-foulant device fittings.
• Load-bearing underwater cables for hand-hauled, real-time profiling .
• SBE 36 CTD Deck Unit & PDIM or SBE 33 Deck Unit & Sea-Bird water sampler (real-time operation on single-core armored cable to 10,000 m).
• Plastic shipping case.

Specifications

Measurement Range

Conductivity: 0 to 9 S/m
Temperature: -5 to +35 °C
Pressure: Strain gauge 0 to 20 / 100 / 350 / 600 / 1000 / 2000/ 3500 / 7000 m;
Quartz 0 to  20 / 60 / 130 / 200 / 270 / 680 / 1400 / 2000 / 4200 / 7000 / 10,500 m

Initial Accuracy

Conductivity: ± 0.0005 S/m
Temperature: ± 0.005 °C
Pressure: Strain gauge ± 0.1% of full scale range; Quartz± 0.02% of full scale range

Typical Stability

Conductivity: 0.0003 S/m per month
Temperature: 0.0002 °C per month
Pressure: Strain gauge 0.1% of full scale range per year; Quartz 0.02% of full scale range per year

Resolution

Conductivity: 0.00005 S/m typical
Temperature: 0.0001 °C
Pressure: Strain gauge 0.002% of full scale range; Quartz 0.0025% of full scale range

Miscellaneous

Memory & Data Storage: 64 Mbyte non-volatile FLASH.
Bytes/sample: 6 T&C; 5 pressure; 2 each external voltage; 4 date & time (RS-232 sensor is sensor dependent)
Power Supply & Consumption: 9 alkaline D-cell batteries, 60 hours CTD profiling (see manual)
Optional External Power: 9 - 28 VDC; consult factory for required current
Auxiliary Sensors: Power out up to 500 mA at 10.5 - 11 VDC;
Voltage sensor A/D resolution 14 bits and input range 0-5 VDC
Housing, Depth Rating, & Weight: Acetal Copolymer Plastic, 600 m, in air 7.3 kg, in water 2.3 kg.
3AL-2.5V Titanium, 7000 m, in air 13.7 kg, in water 8.6 kg.
6AL-4V Titanium, 10,500 m.
Note: Add 0.3 to 0.7 kg (in air) for pump, depending on model.
Optional Cage: (for 19plus V2 with strain gauge pressure) 1016 x 241 x 279 mm, 6.3 kg (see drawing 22009)
(for 19plus V2 with Digiquartz pressure) 1219 x 241 x 279 mm (see drawing 22010)