SBE 37-SMP-IDO MicroCAT C-T-DO (Pressure optional) Recorder
Configuration Details

37-SMP-IDO MicroCAT includes:

• Serial interface (RS-232 standard, RS-485 optional)
• Memory
• internal, integral Pump
• Integrated Dissolved Oxygen sensor

Photos of standard shipment.

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

Cable fits loosely through wire guide, & is clamped only at mounting clamp. See document 67219.

Thread for clamping to mooring cable:

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

Pressure sensor is installed in end cap (behind mount clamp), & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 37-SMP-IDO, 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)

Standard Connector (Impulse XSG)

Wet-pluggable Connector (MCBH)

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.

Case holds only 3 IDO MicroCATs (photo shows 4 non-IDO MicroCATs)

• 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 37SMP-7I reflects a credit for deletion of our standard wood crate.

801863 is battery holder, without batteries. Battery holder is included with standard shipment; this is a spare.
NOTE: Other MicroCATs use a battery pack with a red cover plate; the wiring of that pack is different from this one, and cannot be used with IDO MicroCATs (37-IMP-IDO or 37-SMP-IDO).

801863 shown with 50441 batteries installed (Note: Batteries cannot be shipped installed in battery holder)

Batteries packed in heat-sealed plastic (above), then placed in bubble-wrap outer sleeve and strong packaging for shipment (below).

Case holds only 3 IDO MicroCATs (photo shows 4 non-IDO MicroCATs)

• 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).