MicroCAT C and T (pressure optional) Recorder with Inductive Modem, and internal Pump - Includes mooring clamp for jacketed wire, 8 MB Flash memory, lithium battery (non-hazardous), AF24173 Anti-Foulant Devices, Seasoft software, and complete documentation.
37-IMP MicroCAT includes:
- Inductive Modem interface
- internal, integral Pump — pump provides improved conductivity response & improved anti-foul protection over 37-IM
Communicating with 1 or more 37-IMPs requires use of Sea-Bird Inductive Modem Module (IMM) or Surface Inductive Modem (SIM), which provide serial interface between user’s computer & up to 100 IM instruments coupled to single cable. Purchase IMM/SIM & optional Inductive Cable Coupler (ICC) separately.
Compare features of the numerous SBE 37 MicroCAT models.
|SBE 37-IMP Housing (depth) Selections — MUST SELECT ONE
||350 m plastic housing
||7000 m titanium housing
|SBE 37-IMP Pressure Sensor Range (depth) Selections — MUST SELECT ONE
||No pressure sensor
||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 MicroCAT, 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)
||20 m strain gauge pressure sensor
||100 m strain gauge pressure sensor
||350 m strain gauge pressure sensor
||600 m strain gauge pressure sensor
||1000 m strain gauge pressure sensor
||2000 m strain gauge pressure sensor
||3500 m strain gauge pressure sensor
||7000 m strain gauge pressure sensor
|SBE 37-IMP Mooring Clamp Wire Size Selections (Specify clamp to match O.D. of mooring wire jacket) — MUST SELECT ONE
||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 67220. '.I' designation indicates that guide and clamp are to be installed on instrument at factory.
Thread for clamping to mooring cable:
- 1/4 in. diameter: 1/4-28 UNF
- 5/16 in./8 mm diameter: 5/16-24 UNF
- 3/8 in. diameter: 3/8-24 UNF
- 1/2 in. diameter: 9/16-12 UNC
- 5/8 in./16 mm diameter: 5/8-18 UNF
- 6 mm diameter: 1/4-20 UNF
- 10 mm diameter: 7/16 -14 UNF
- 12 mm diameter: 1/2-13 UNF
Clamp Size Note: Mooring wire is typically specified by wire size, not by outer diameter (O.D.) of the mooring wire jacket. Verify the wire jacket O.D. before selecting the clamp size. The clamp size must be less than or equal to the wire jacket O.D. but larger than the wire diameter. For example, Mooring System Inc.’s specifications for 3x19 wire rope (in 2016) are as follows:
||Recommended Sea-Bird Clamp
|3/16 inch (5.0 mm)
||0.255 inch (6.5 mm)
|1/4 inch (6.5 mm)
||0.330 inch (8.4 mm)
|5/16 inch (8.0 mm)
||0.392 inch (9.9 mm)
|3/8 inch (9.5 mm)
||0.453 inch (11.5 mm)
||10 mm (0.394 inch)
|7/16 inch (11.1 mm)
||0.5 inch (12.7 mm)
||Wire guide & mounting clamp for 5/16 in. or 8 mm diameter mooring wire
||Wire guide & mounting clamp for 3/8 in. diameter mooring wire
||Wire guide & mounting clamp for 1/2 in. diameter mooring wire
||Wire guide & mounting clamp for 6 mm diameter mooring wire
||Wire guide & mounting clamp for 10 mm diameter mooring wire
||Wire guide & mounting clamp for 12 mm diameter mooring wire
||Wire guide & mounting clamp for 5/8 in. or 16 mm diameter mooring wire
|SBE 37-IMP Spares & Accessories
||AF24173 Anti-Foulant Device pair (spare, bagged, labeled for shipping)
||Anti-foulant devices fit into anti-foulant device cups at each end of conductivity cell. Anti-foulant devices included with standard shipment; these are spares.
Useful life varies, depending on several factors. We recommend that customers consider more frequent replacement when high biological activity & strong current flow (greater dilution of anti-foulant concentration) are present. Moored instruments in high growth & strong dilution environments have been known to obtain a few months of quality data, while drifters that operate in non-photic, less turbid deep ocean environments may achieve years of quality data. Experience may be strongest determining factor in specific deployment environments.
||SBE 37 & 44 lithium batteries (spare), package of twelve 3.6V AA cells (Saft LS 14500)
One set of batteries is included with standard shipment; 50441 are spares. Batteries are easily accessed by removing 2 screws from connector end cap & pulling out end cap. Shipping restrictions apply for lithium batteries; see SBE 37-IMP manual for details. Click here to buy Saft LS 14500 from Amazon.
801863 is battery holder, without batteries. Battery holder is included with standard shipment; this is a spare.
Note: Older 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 37-IMP MicroCATs with firmware version > 4.0.
801863 shown with 50441 cells installed
(Note: Cells cannot be shipped
installed in battery holder)
Cells packed in heat-sealed plastic (above),
then placed in bubble-wrap outer sleeve &
strong packaging for shipment (below)
||Yellow top battery holder (14V nominal, Version 2) for use with twelve 3.6V AA lithium cells, for pumped SBE 37 (SMP & IMP with firmware version > 4.0 & all SMP-ODO, IMP-ODO, & SMP-IDO, IMP-IDO)
||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) & SBE 44
||In 2008, original battery pack was replaced with red top battery holder, which uses 12 AA lithium batteries instead of 50243.1 battery set. See Application Note 89 for details.
801797 is battery holder, without batteries.
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.
Note: Newer MicroCATs use a battery pack with a yellow cover plate (see above); wiring of that pack is different from this one, and cannot be used with 37-IMP MicroCATs with firmware version < 4.0.
||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
||37-IM/IMP/IMP-ODO/IMP-IDO and 39plus Internal Data I/O cable, 0.3 m (DN 33406)
||For uploading data quickly using internal RS-232 connector.
||Anti-foulant cap without hose barb, black (for use with SBE 37 [SM, SMP, IM, IMP, SI, SIP] with firmware version < 4.0)
||Anti-foulant cap holds AF24173 Anti-Foulant Device in place.
Note: Anti-Foulant Devices are held in place by conductivity cell guard in newer 37-IMPs (firmware version > 4.0).
||High-head pressure port plug for muddy/biologically productive environments (Application Note 84), for use with SBE 37 [SM, SMP, IM, IMP, SI, SIP] with firmware version < 4.0
||This pressure port plug extends beyond surface of instrument end cap, and has 4 horizontal vent holes connecting internally to a vertical vent hole. If you are deploying 37-IMP in an orientation close to horizontal, with pressure port up, horizontal orientation of vent holes prevents deposit of sediment inside pressure port. Each of the 4 vent holes is larger than single vent hole in standard pressure port plug, significantly reducing possibility that biological growth will cover all holes. See Application Note 84.
Note: High-head pressure port plug is not compatible with newer 37-IMPs (firmware version > 4.0), because pressure port plug is behind mount clamp.
||Storm Shipping Case (iM2950) - holds up to 4 SBE 37IMPs
Storm shipping case with custom foam inserts holds up to 4 MicroCATs that do not include dissolved oxygen — IMP, IM, SMP, SM, SIP, SI.
- 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).
|For Surface Inductive Modem (SIM), Inductive Modem Module (IMM), and Inductive Cable Coupler (ICC), see separate listings.