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SBE 44 Underwater Inductive Modem
Configuration Details

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Brochure/specifications     Manual     Reference Sheet

Note: We do not publish prices on the website. Please contact us [seabird@seabird.com or (+1) 425-643-9866] for pricing.

Part # Description Notes
44 UNDERWATER INDUCTIVE MODEM - Converts RS-232 telemetry from a variety of instruments (e.g., current meter, tide gauge, ADCP, etc.) to inductive telemetry, for use with other Sea-Bird inductive telemetry system instruments & components. Includes titanium housing (7000 m depth), 6-pin bulkhead connector (AG-306), mounting clamp for jacketed wire rope, lithium battery (non-hazardous), test cable (801434), Seasoft software, & complete documentation. Specify mooring clamp wire size selection to match O.D. of wire jacket. Communicating with 1 or more 44s requires use of Sea-Bird Surface Inductive Modem (SIM) or Inductive Modem Module (IMM), which provides serial interface (RS-232 or RS-485) between user’s computer & up to 100 IM instruments coupled to single cable. Purchase SIM / IMM & optional Inductive Cable Coupler (ICC) separately.

Underwater Inductive Modem Module (UIMM) provides a more flexible interface than SBE 44, and is an economical alternative to SBE 44 for RS-232 instruments that have an internal power supply or where you plan to power an RS-232 instrument with an external battery pack.

For Sea-Bird inductive modem instruments, see:

  • SBE 39-IM for temperature and optional pressure recorder with inductive modem interface.
  • SBE 37-IM and 37-IMP MicroCATs for CTD (conductivity, temperature, and optional pressure) with inductive modem interface.
  • SBE 16plus-IM V2 SeaCAT for CTD with inductive modem interface and auxiliary sensor input capability.

Photos of standard shipment.

SBE 44 Mooring Clamp Wire Size Selections (Specify mooring clamp to match O.D. of wire jacket) -- MUST SELECT ONE
44-1a Wire guide & mounting clamp for 1/4 in. diameter mooring wire Cable fits loosely through IM coupling core / wire guide, & is clamped only at mounting clamp. See document 67142A.

Thread for clamping to mooring cable:

  • 44-1a (1/4 in. diameter): 1/4-28 UNF
  • 44-1b (5/16 in. diameter): 5/16-24 UNF
  • 44-1c (3/8 in. diameter): 3/8-24 UNF
  • 44-1d (1/2 in. diameter): 9/16-12 UNC
  • 44-1e (6 mm diameter): 1/4-20 UNF
  • 44-1f (8 mm diameter): 5/16-24 UNF
  • 44-1g (10 mm diameter): 7/16 -14 UNF
  • 44-1h (12 mm diameter): 1/2-13 UNF
  • 44-1i (16 mm, 5/8 in. diameter): 5/8-18 UNF
44-1b Wire guide & mounting clamp for 5/16 in. diameter mooring wire
44-1c Wire guide & mounting clamp for 3/8 in. diameter mooring wire
44-1d Wire guide & mounting clamp for 1/2 in. diameter mooring wire
44-1e Wire guide & mounting clamp for 6 mm diameter mooring wire
44-1f Wire guide & mounting clamp for 8 mm diameter mooring wire
44-1g Wire guide & mounting clamp for 10 mm diameter mooring wire
44-1h Wire guide & mounting clamp for 12 mm diameter mooring wire
44-1i Wire guide & mounting clamp for 16 mm (5/8 in.) diameter mooring wire
SBE 44 Wet-Pluggable Connector Option
44-2 Wet-pluggable (MCBH) bulkhead connector instead of Standard (XSG) connector (includes wet-pluggable test cable)

Standard connector (Impulse AG-306)		 Wet-pluggable connector (MCBH) -- photo not available

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 (exception: 6-pin connectors) & 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.
SBE 44 Accessories
50442 Red top battery holder (7V nominal, Version 1) (PN 801797) and twelve AA lithium cells (PN 50441), for SBE 37 (SM, SMP, IM, IMP with firmware version < 4.0) and SBE 44 In 2008, original battery pack was replaced with new retrofit battery pack, which uses 12 AA lithium batteries instead of 50243.1 battery set. See MicroCAT Change Notice and Application Note 89 for details.

Price for 50442, which includes both battery holder (801797) & batteries (50441), is less than price when ordering battery holder & batteries separately. Sea-Bird is helping to absorb some cost for new battery holders by providing a reduced price.

One set of batteries is included with standard shipment; 50441 are spares. Batteries are easily accessed by removing 2 screws from modem end cap & pulling out end cap. Shipping restrictions apply for lithium batteries; see SBE 44 manual for details.

801797 is battery holder, without batteries.
NOTE: Newer MicroCATs (SMP & IMP with firmware > 4.0, and all IDO & ODO MicroCATs) use a battery pack with a yellow cover plate; the wiring of that pack is different from this one, and cannot be used with SBE 44.


801797 shown with 50441 batteries installed

Batteries packed in heat-sealed plastic (above),
then placed in bubble-wrap outer sleeve and
strong packaging for shipment (below).
50441 SBE 37 & 44 lithium batteries (spare), package of twelve 3.6V AA cells (Saft LS 14500)
801797 Red top battery holder (7V nominal, Version 1) for use with twelve 3.6V AA lithium cells, for SBE 37 (SM, SMP, IM, IMP with firmware version < 4.0) and SBE 44
801434 2.4 m test cable, AG-206 to DB-9S (DN 32806) Connects SBE 44 to computer to test serial communication through SBE 44’s RS-232 bulkhead connector. Cable included with standard shipment if standard connector ordered; this is spare.
For Surface Inductive Modem (SIM), Inductive Modem Module (IMM), and Inductive Cable Coupler (ICC), see separate listing.

 

Product configuration options listing for all products

Additional cables, mount kits, and spares may be found at: Cables, Mount kits for Sea-Bird sensors, Mount kits for Third Party sensors, Spare parts

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