SBE 9plus CTD
Configuration Details

9plus provides real-time data when controlled with 11plus Deck Unit. Deck Unit provides power, decodes data stream, passes data to computer, & allows user control of water sampler.

Real-Time Data Notes:
- Computer, slip-ring-equipped winch, conductive cable, & NMEA 0183 navigation device not supplied by Sea-Bird.
- See Option 9p-4b for G.O. 1015 water sampler control.
- When used without water sampler, 9plus is deployed in vertical orientation.
- Standard & optional auxiliary sensors on 9plus not shown.

Autonomous operation (no conducting wire required) is provided when 9plus is controlled with 17plus V2 SEARAM Memory & Auto Fire Module. SEARAM provides power, stores data in memory, & allows operation of water sampler with pre-programmed closure pressures.

Autonomous Operation Notes:
- Winch & cable not supplied by Sea-Bird.
- When used without SBE 32 or 32C Carousel water sampler, 9plus is deployed in vertical orientation.
- Standard & optional auxiliary sensors on 9plus not shown.

SBE 9plus Housing and Connector Selections -- MUST SELECT ONE

These options include standard or wet-pluggable bulkhead connectors. Wet-pluggable connectors may be mated in wet conditions. Their pins do not need to be dried before mating. By design, water on connector pins is forced out as connector is mated. However, they must not be mated or un-mated while submerged. Wet-pluggable connectors have a non-conducting guide pin to assist pin alignment & require less force to mate, making them easier to mate reliably under dark or cold conditions, compared to our standard (Impulse XSG/RMG) connectors. Like standard connectors, wet-pluggables need proper lubrication & require care during use to avoid trapping water in sockets.

 
Connector on SBE 3plus Temperature Sensor with aluminum housing shown, to illustrate difference between standard & wet-pluggable connectors.

Pressure sensor is installed in main housing bottom end cap. Unlike modular T & C sensors, pressure sensor is not field-replaceable / swappable. While highest pressure rating gives you most flexibility in using 9plus, 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 1400 & 4200 m sensors --

• 1400 m sensor:
  initial accuracy = 0.21 m (= 0.015% * 1400 m),
  resolution = 0.014 m (= 0.001% * 1400 m)
• 4200 m sensor:
  initial accuracy = 0.63 m (= 0.015% * 4200 m),
  resolution = 0.042 m (= 0.001% * 4200 m)

SBE 9plus Command Telemetry Options

Water sampler modem not required:

• for autonomous water sampling without conducting cable (9plus with SBE 17plus V2 SEARAM & SBE 32 or 32C Carousel Water Sampler), or
• for use without a water sampler, unless option 9p-11a or 11b Serial Data Uplink is specified.

SBE 9plus Auxiliary Sensor Options

• 9p-6, -7, & -8 include auxiliary sensor, mount, & straight cable to connect sensor to 9plus bulkhead connector. See auxiliary sensor specification sheets (SBE 43, 18, 27) for sensor descriptions. Auxiliary sensor connector type (standard or wet-pluggable) must match 9plus connector type.
• SBE 9plus has 8 differential input A/D channels for auxiliary sensors. Each of 4 auxiliary sensor bulkhead connectors on 9plus end cap can obtain input from up to 2 sensors. If connecting 2 sensors to 1 bulkhead connector, YMOLD (to create a y-cable) applies in addition to 9p-6, -7, & -8 price.
• Additional sensors not listed here ‑- fluorometers, transmissometers, turbidity meters, PAR sensors, altimeters, etc. from third party manufacturers ‑- are compatible with 9plus. These sensors can be purchased from Sea-Bird & integrated with 9plus 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 9plus in field. However, as noted above, Y-cable is required to connect 2 auxiliary sensors to 1 bulkhead connector on 9plus; 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 -- Sensor is plumbed between conductivity sensor & pump.

300 baud modem for water sampler control (see note) is required to support serial data uplink. Serial data is multiplexed into 9plus telemetry stream & de-multiplexed by 11plus, outputting to computer through standard 9600 Baud Uplink connector. System supports use of serial data output instrument & water sampler in same cast.

If 9p-11b (19200 baud) selected, continuous transmission rate may not exceed 9600 baud (960 bytes/second). Therefore, serial data output instrument must transmit at 19200 baud in burst mode (transmissions separated by intervals with no data transmission, resulting in average rate of 960 bytes/second).

When 9p-11a or 11b is ordered, 3-pin JT4 connector for G.O. 1015 on 9plus top end cap is replaced with 4-pin serial data connector.

*Note: 300 baud modem in 9plus & 11plus has been standard since early 2005. For older instruments, it was optional.

SBE 9plus Wide Range Calibration Options

Wide range calibrations require a 12-week lead time.

• 50088 for aluminum 9plus with standard connectors -- See document 67025 for complete listing of parts.
• 50139 for titanium 9plus with standard connectors -- See document 67128 for complete listing of parts.
• 50321 for aluminum 9plus with wet-pluggable connectors -- See document 67129 for complete listing of parts.
• 50322 for titanium 9plus with wet-pluggable connectors -- See document 67130 for complete listing of parts.