SBE 37-SM MicroCAT C-T (Pressure optional) Recorder
Configuration Details

• Serial interface (RS-232 standard, RS-485 optional)
• Memory (37-SM with firmware version > 3.0 have 8 MB memory instead of 2 MB)

For photos of standard shipment, click here.

See SBE 16plus V2 SEACAT for instrument with auxiliary sensor input capability.

SBE 37-SM Mooring Clamp Wire Size Selections (Specify clamp to match O.D. of mooring wire jacket) -- MUST SELECT ONE

Cable fits loosely through wire guide, & is clamped only at mounting clamp. See document 67094.

Thread for clamping to mooring cable:

• 37SM-1a (1/4 in. diameter): 1/4-28 UNF
• 37SM-1b (5/16 in. diameter): 5/16-24 UNF
• 37SM-1c (3/8 in. diameter): 3/8-24 UNF
• 37SM-1d (1/2 in. diameter): 9/16-12 UNC
• 37SM-1e (6 mm diameter): 1/4-20 UNF
• 37SM-1f (8 mm diameter): 5/16-24 UNF
• 37SM-1g (10 mm diameter): 7/16 -14 UNF
• 37SM-1h (12 mm diameter): 1/2-13 UNF
• 37SM-1i (16 mm, 5/8 in. diameter): 5/8-18 UNF

Pressure sensor is installed in end cap, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 37-SM, 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 37-SM Alternate Serial Interface and Power Options

(shown with optional mounting clamp)

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.

Both 37SM-6 options include a data I/O cable compatible with wet-pluggable data I/O connector.

• Injection molded case with HPX resin plastic body, recessed wheels, automatic pressure equalization valve, hinged push-button latches, fold-down padded handle, & O-ring seal. Meets airline luggage regulations.
• Inner dimensions:
  29 x 18 x 10.5 inches (74 x 46 x 27 cm).
• Outer dimensions:
  31.3 x 20.4 x 12.2 inches (80 x 52 x 31 cm).

Price for 37SM-7 reflects a credit for deletion of our standard wood crate.

• Cleaning instructions require use of syringe & tubing assembly at intake end of conductivity cell (requiring 1 barbed cap).
• Storage instructions require looping Tygon tubing from end to end of conductivity cell (requiring 2 barbed caps).

Do not deploy MicroCAT with barbed anti-foulant device cap(s)!

801366 -- Included with standard shipment if 37SM-6a specified (3-pin wet-pluggable connector); this is spare.

801385 -- Included with standard shipment if 37SM-4 or -5 specified (4-pin connector with external power input capability); this is spare.

801206 -- Included with standard shipment if 37SM-4 or -5 & 37SM-6b specified (4-pin wet-pluggable connector with external power input capability); this is spare.

• Injection molded case with HPX resin plastic body, recessed wheels, automatic pressure equalization valve, hinged push-button latches, fold-down padded handle, & O-ring seal. Meets airline luggage regulations.
• Inner dimensions:
  29 x 18 x 10.5 inches (74 x 46 x 27 cm).
• Outer dimensions:
  31.3 x 20.4 x 12.2 inches (80 x 52 x 31 cm).