SBE 19plus V2 SEACAT Profiler
Configuration Details

19plus V2 in plastic housing with SBE 5M plastic pump & associated plumbing (plumbing configuration shown for 19plus V2 to be deployed in vertical orientation)

19plus V2 is intended primarily as a profiling CTD, sampling at 4 Hz, but can also be used in moored mode to obtain long-term time series data. 19plus V2 is powered by internal batteries, & records data in memory.

In addition, in profiling mode, 19plus V2 can be deployed:

• With SBE 36 CTD Deck Unit & Power Data Interface Module (PDIM), which provide power & real-time data handling capability over single-conductor sea cables. For PDIM, specify 19p-9a or -9b; order SBE 36 separately.
  
• With SBE 32 Carousel Water Sampler & SBE 33 Deck Unit, which provide power, real-time data handling capability, & real-time water sampler control over single-conductor sea cables. Order SBE 32 (32, 32C, or 32SC) & SBE 33 separately.
  
• With SBE 32 Carousel Water Sampler & Auto Fire Module (AFM), which provide autonomous water sampling capability. Order SBE 32 (32, 32C, or 32SC) & AFM (by selecting appropriate Carousel operating mode configuration in 32, 32C, or 32SC listing) separately.
  
• With SBE 55 ECO Water Sampler & SBE 33 Deck Unit, which provide power, real-time data handling capability, & real-time water sampler control over single-conductor sea cables. Order SBE 55 & SBE 33 separately.
  
• With SBE 55 ECO Water Sampler, which has built-in capabilities similar to that of an SBE 32 integrated with an AFM, providing autonomous water sampling capability. Order SBE 55 separately.
  

For photos of standard shipment, click here.

For other profiling CTDs, see SBE 9plus & 25.
See SBE 16plus V2 for similar CTD intended for moored applications instead of profiling applications.

SBE 19plus V2 Housing (depth rating) Selections -- MUST SELECT ONE

SBE 5M pump with plastic housing is rated to 600 m; SBE 5M pump with titanium housing is rated to 10,500 m.

Pressure sensor is installed in connector end cap, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 19plus V2, it is at expense of accuracy & resolution. It is advantageous to use lowest range pressure sensor compatible with your intended maximum operating depth, because accuracy & resolution are proportional to pressure sensor's full scale range. For example, comparing 2000 & 7000 m sensors --

• 2000 m sensor:
  initial accuracy = 2 m (= 0.1% * 2000 m),
  resolution = 0.04 m (= 0.002% * 2000 m)
• 7000 m sensor:
  initial accuracy = 7 m (= 0.1% * 7000 m),
  resolution = 0.14 m (= 0.002% * 7000 m)

SBE 19plus V2 Digiquartz Pressure Sensor (substitutes for strain gauge option)

Digiquartz pressure sensors provide better accuracy (0.02% of full scale range vs 0.1% of full scale range) & resolution than strain gauge pressure sensors. See SBE 19plus V2 Strain Gauge Pressure Sensor Options above for photo of pressure sensor port; when used with Digiquartz, plug is replaced with nylon pressure capillary fitting.

Pressure sensor is installed in connector end cap, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 19plus V2, it is at expense of accuracy & resolution. It is advantageous to use lowest range pressure sensor compatible with your intended maximum operating depth, because accuracy & resolution are proportional to pressure sensor's full scale range. For example, comparing 2000 psia (1400 m) & 6000 psia (4200 m) sensors --

• 2000 psia (1400 m) sensor:
  initial accuracy = 0.28 m (= 0.02% * 1400 m)
• 6000 psia (4200 m) sensor:
  initial accuracy = 0.84 m (= 0.02% * 4200 m)

Standard SBE 5M pump is intended for providing pumped conductivity only, for improved conductivity response over a non-pumped system. Larger, more powerful SBE 5P or 5T is required if also planning to pump auxiliary sensors (such as dissolved oxygen, etc.).

SBE 5P plastic pump is rated for 600 m; SBE 5T titanium pump is rated to 10,500 m. Operational characteristics of SBE 5P & 5T are identical.

SBE 19plus V2 Wet-Pluggable Connector Option

MCBH wet-pluggable connectors -- photo not available

19p-5 includes additional cost of wet-pluggable connectors on 19plus V2 & pump, data I/O & pump Y-cable with wet-pluggable connector on all three legs, & data I/O cable compatible with wet-pluggable data I/O connector.

• 19p-6, -7, & -8 include auxiliary sensor, mount, & straight cable to connect sensor to 19plus V2 bulkhead connector. See auxiliary sensor specification sheets (SBE 43, 18, 27) for sensor descriptions. Auxiliary sensor connector type (standard or wet-pluggable) must match 19plus V2 connector type.
• If connecting 2 sensors to 1 bulkhead connector, YMOLD (to create a y-cable) applies in addition to 19p-6, -7, & -8 price.
• Additional sensors not listed here ‑- fluorometers, transmissometers, turbidity meters, PAR sensors, etc. from third party manufacturers ‑- are compatible with 19plus V2. These sensors can be purchased from Sea-Bird & integrated with 19plus V2 at our factory, or you can purchase mount kits & cables from Sea-Bird & perform integration yourself. See Third Party portion of price list.
• User can change sensors on 19plus V2 in field. However, as noted above, Y-cable is required to connect 2 auxiliary sensors to 1 bulkhead connector on 19plus V2; each Y-cable is unique to sensors being integrated, so changing sensors may require changing Y-cable. In addition, sensor mechanical mountings may need to be changed to suit selected combination of sensors.

Sensor-Specific Information:

• SBE 43 -- SBE 43 is available in 7000 m titanium (19p-6a or -6b) or 600 m plastic (19p-6c or -6d) housing. SBE 43 is plumbed between conductivity sensor & pump. Consequently, system requires more powerful SBE 5P plastic (19p-4a) or 5T titanium pump (19p-4b) instead of standard 5M pump; operational characteristics of SBE 5P & 5T are identical.
• SBE 18 & SBE 27 -- Note that these sensors are only available with a depth rating to 1200 m.

Moored Application Information:

• SBE 43 -- If intending to use 19plus V2 in moored application, contact Sea-Bird to specify integration with an SBE 43 in Moored Configuration instead of Profiling Configuration (1 mil membrane vs 0.5 mil membrane for enhanced long-term stability; black plenum vs white plenum, & black Tygon tubing vs clear Tygon tubing for plumbing, for reduced bio-fouling).
• SBE 18 & SBE 27 -- Sensors are not recommended for use in moored applications. See Application Note 76: pH or pH/ORP Sensors and Moored Applications.

SBE 36 CTD Deck Unit & PDIM provide surface power & real-time data acquisition & control for 19plus V2, allowing deployment with 10,000 m long single-conductor sea cables. SBE 36 is installed on ship, while PDIM is mounted on or near 19plus V2. See SBE 36 description for more information on interface.

SBE 33 Deck Unit is typically used to provide surface power & real-time data acquisition & control for 19plus V2 & SBE 32 (32, 32C, or 32SC) Carousel Water Sampler or SBE 55 ECO Water Sampler. However, it can be used with PDIM instead of Carousel or ECO to provide same functionality as SBE 36 & PDIM.

PDIM housing is anodized aluminum, & is rated to 6800 m. PDIM connector type (standard or wet-pluggable) must match 19plus V2 connector type.

19p-9a & -9b do not include SBE 36 or 33 Deck Unit; order separately.

 
Can substitute SBE 33 Carousel Deck Unit for SBE 36 CTD Deck Unit.
For SBE 33, both NMEA & PAR interfaces are optional.

SBE 9plus shown; SBE 19plus V2 similar

Hardigg shipping case with custom foam inserts holds SBE 19plus V2 with auxiliary sensors in optional cage.

• Rotationally molded high-impact polyethylene with reinforced corners & edges, molded-in corrugations, reinforced corners & edges, tongue-in-groove seal, positive anti-shear locks, comfort-grip handle, recessed hardware. Meets airline luggage regulations.
• Inner dimensions:
  49 x 14.8 x 16.2 inches (124 x 38 x 41 cm).
• Outer dimensions:
  52 x 17.8 x 18.4 inches (132 x 45 x 47 cm).

Price for 19p-10 reflects a credit for deletion of our standard wood crate.

Many users purchase optional cage to protect system from damage during deployment.

• 801269 (drawing 22009) -- cage for 19plus V2 with standard strain-gauge pressure sensor
• 801270 (drawing 22010) -- cage for 19plus V2 with optional Digiquartz pressure sensor (Digiquartz sensor requires longer 19plus V2 housing, which requires a taller cage)

See document 67171 for installation details.

19plus V2 deployed with SBE 32 (full size) Carousel Water Sampler requires a shorter cage, which is mounted horizontally below carousel in Carousel extension stand.
- For 19plus V2 with standard strain gauge pressure sensor, order cage PN 23892, drawing 20893.
- For 19plus V2 with optional Quartz pressure sensor, contact Sea-Bird.
Also required is PN 50124 Adapter Kit for Ring Top Cage, which reduces 19plus V2 cage ring top diameter to allow for installation in extension stand; see document 67186.

19plus V2 deployed on SBE 32C (compact) or 32SC (subcompact) Carousel Water Sampler is mounted in bottle position on Carousel, & does not use cage.

19plus V2 deployed on SBE 55 ECO Water Sampler is mounted on mesh panel, & does not use cage.

Note: This cage is for use with SBE 19plus or 19plus V2, but not with older SEACAT (SBE 19).

SBE 9plus shown; SBE 19plus V2 similar

Hardigg shipping case with custom foam inserts holds SBE 19plus V2 with auxiliary sensors in optional cage.

• Rotationally molded high-impact polyethylene with reinforced corners & edges, molded-in corrugations, reinforced corners & edges, tongue-in-groove seal, positive anti-shear locks, comfort-grip handle, recessed hardware. Meets airline luggage regulations.
• Inner dimensions:
  49 x 14.8 x 16.2 inches (124 x 38 x 41 cm).
• Outer dimensions:
  52 x 17.8 x 18.4 inches (132 x 45 x 47 cm).

Select a cable with connector (standard XSG or wet-pluggable MCBH) to match your 19plus V2.

• 50434 for 19plus V2 with standard connectors -- See document 67196.
• 50435 for 19plus V2 with wet-pluggable connectors -- See document 67197.

Anti-foulant devices are typically used when 19plus V2 is deployed on a mooring, instead of as a profiling CTD. Use of Anti-foulant devices requires installation of PN 50288 SBE 19plus/19plus V2 Moored Mode Conversion Kit (see SBE 19plus V2 Accessories above); anti-foulant devices fit into anti-foulant device cups at each end of conductivity cell.

Useful life varies, depending on several factors. We recommend that customers consider more frequent replacement when high biological activity & strong current flow (greater dilution of anti-foulant concentration) are present. Moored instruments in high growth & strong dilution environments have been known to obtain a few months of quality data, while drifters that operate in non-photic, less turbid deep ocean environments may achieve years of quality data. Experience may be strongest determining factor in specific deployment environments.