SBE 16plus-IM V2 SeaCAT C-T (Pressure optional) Recorder (Inductive Modem)
Configuration Details

Communicating with 1 or more 16plus-IM V2s requires use of Sea-Bird Surface Inductive Modem (SIM), which provides serial interface (RS-232 or RS-485) between user’s computer & up to 100 IM instruments coupled to single cable. Purchase SIM & optional Inductive Cable Coupler (ICC) separately.

See:

• SBE 16plus V2 for version with serial interface (standard RS-232 or optional RS-485) in place of Inductive Modem interface.
• SBE 37-IM or 37-IMP MicroCATs for CTD (conductivity, temperature, and optional pressure) with inductive modem interface (no auxiliary sensor input capability).
• SBE 37-IMP-IDO MicroCAT for CTD (conductivity, temperature, and optional pressure) and Dissolved Oxygen with inductive modem interface (no other auxiliary sensor input capability).
• SBE 39-IM for temperature and optional pressure recorder with inductive modem interface.
• SBE 44 Underwater Inductive Modem or Underwater Inductive Modem Module (UIMM) to integrate an RS-232 sensor with Sea-Bird's inductive modem telemetry system.

Thread for clamping to mooring cable:

• 16PIM-2a (1/4 in. diameter): 1/4-28 UNF
• 16PIM-2b (5/16 in. diameter): 5/16-24 UNF
• 16PIM-2c (3/8 in. diameter): 3/8-24 UNF
• 16PIM-2d (1/2 in. diameter): 9/16-12 UNC
• 16PIM-2e (6 mm diameter): 1/4-20 UNF
• 16PIM-2f (8 mm diameter): 5/16-24 UNF
• 16PIM-2g (10 mm diameter): 7/16 -14 UNF
• 16PIM-2h (12 mm diameter): 1/2-13 UNF
• 16PIM-2i (16 mm, 5/8 in. diameter): 5/8-18 UNF

Pressure sensor is installed in connector end cap, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 16plus-IM 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)

Digiquartz pressure sensors provide better accuracy (0.02% of full scale range vs 0.1% of full scale range) & resolution (Digiquartz resolution dependent on user-programmable integration time) than strain gauge pressure sensors. See SBE 16plus-IM V2 Strain Gauge Pressure Sensor Options above for photo of pressure sensor port; when used with Digiquartz, nylon pressure capillary fitting screws into port.

Pressure sensor is installed in connector end cap, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 16plus-IM 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)

SBE 5M pump is intended for providing pumped conductivity only. Pump provides better conductivity response & anti-foulant protection than non-pumped configuration. SBE 5M pump is rated to 600 m with plastic housing or 10,500 m with titanium housing.

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

Pump bulkhead connector on 16plus-IM V2 is standard, so pump can be added in field without requiring any modifications to 16plus-IM V2. These all include pump, pump mount, & pump interface cable. 16PIM-5c, -5d, -5g, & -5h include pump cable compatible with wet-pluggable bulkhead connectors on 16plus-IM V2 & on pump. See DN 30565 for standard connectors, DN 32499 for wet-pluggable connectors.

• Intake end of conductivity cell
• Exhaust end of conductivity cell, when 16plus-IM V2 is not pumped

• Exhaust end of conductivity cell when 16plus-IM V2 is pumped, for connection of Tygon tubing
• Intake end of conductivity cell during cleaning and storage only, to allow you to connect Tygon tubing for flushing plumbing

Notes:

• Sea-Bird does not supply Electrochem lithium batteries; you must purchase them elsewhere (see WGT's website for purchasing information). Shipping restrictions apply for Electrochem lithium batteries & assembled battery packs.
• Lithium battery packs cannot be used with a 16plus-IM V2 that is integrated with SBE 5T or 5P pump, because of current limitations. They can be used with a 16plus-IM V2 with no pump, or with an SBE 5M pump.

• 50323 for 16plus-IM V2 with standard connectors -- See document 67132 for complete listing of parts.
• 50324 for 16plus-IM V2 with wet-pluggable connectors -- See document 67133 for complete listing of parts.