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

• Serial interface (RS-232 standard, RS-485 optional)
• Memory
• internal, integral Pump -- Pump provides improved conductivity response & improved anti-foul protection over 37-SM.

For photos of standard shipment, click here.

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

SBE 37-SMP 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 for mechanical details.

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, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 37-SMP, 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-SMP Alternate Serial Interface and Power Options

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 the connector pins is forced out as the 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 37SMP-6 options include a data I/O cable compatible with wet-pluggable data I/O connector.

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

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

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