SBE 39plus-IM

SBE 39plus-IM Temperature (P) Recorder

Moored Temperature and (optional) Pressure, at user-programmable intervals. Internal memory and battery, Inductive Modem (IM) interface.

The SBE 39plus-IM is a high-accuracy, fast-sampling temperature (pressure optional) recorder with integrated Inductive Modem (IM) interface, internal batteries, and memory. The 39plus-IM is designed for long-duration deployments on moorings.

Data is recorded in memory and can be transmitted when polled through Inductive Modem telemetry. Measured data are output in engineering units.

Memory capacity exceeds 9.5 million samples without pressure, or 5.5 million samples with pressure. Battery endurance varies, depending on the sampling scheme, but the 39plus-IM is usually limited by its memory capacity. Sampling every 7 seconds (without pressure) or 12 seconds (with pressure), the 39plus-IM can be deployed for 2 years.

FEATURES

  • Moored Temperature, Pressure (optional), and time, at user-programmable 5-sec to 6-hour intervals.
  • Inductive Modem (IM) interface.
  • Internal memory and battery pack; internal USB interface for fast upload.
  • 600 m plastic or 10,500 m titanium housing.
  • Rigorous 11-point temperature calibration of each sensor.
  • Seasoft©V2 Windows software package (setup, data upload, and data processing).
  • Next generation SBE 39-IM - faster sampling, more power and memory, same diameter housing, compatible output (39plus-IM to 39-IM comparison).
  • Five-year limited warranty.

COMPONENTS

  • Inductive Modem (IM) system provides reliable, low-cost, real-time data transmission for up to 100 IM-enabled instruments using plastic-coated wire rope (typically 3x19 galvanized steel) as both transmission line and mooring tension member. IM instruments clamp anywhere along the mooring, which is easily reconfigured by sliding and re-clamping instruments on the cable. In a typical mooring, an Inductive Modem Module (IMM) in the buoy communicates with IM instruments and interfaces to a computer/data logger (not supplied by Sea-Bird) via RS-232. The data logger is programmed to poll each IM instrument for data, and sends the data to a satellite link, cell phone, etc.
  • Aged and pressure-protected thermistor has a long history of exceptional accuracy and stability. It is available in two configurations: embedded in titanium endcap (25-sec time constant) for rugged conditions, or external thermistor in pressure-protected sheath (0.5-sec time constant) for fast sampling.
  • Optional strain-gauge pressure sensor with temperature compensation is available in eight ranges (maximum depth 7000 m).

OPTIONS

  • Embedded thermistor (25-sec time constant) for rugged conditions, or external thermistor (0.5-sec time constant) for fast sampling.
  • No pressure, or strain-gauge pressure sensor in one of 8 ranges.
  • Plastic (600 m) or titanium (10,500 m) housing.
  • Wire guide and mounting clamp in one of 9 sizes.
  • Net fender/fairing (conical ends shaped to shed fishing lines and nets).

Measurement Range

Temperature -5 to +45 °C
Optional Pressure 0 to 20 / 100 / 350 / 600 / 1000 / 2000/ 3500 / 7000 m (meters of deployment depth capability)

Initial Accuracy

Temperature ± 0.002 °C (-5 to +35 °C); ± 0.01 (+35 to +45 °C)
Optional Pressure ± 0.1% of full scale range

Typical Stability

Temperature 0.0002 °C per month
Optional Pressure 0.05% of full scale range per year

Resolution

Temperature 0.0001 °C
Optional Pressure 0.002% of full scale range

Miscellaneous

Sampling Speed User-programmable 5-sec to 6-hour intervals
Memory Capacity 9.5 million samples T (7-sec interval for 2 years); 5.5 million samples TD (12-sec interval for 2 years)
Power Supply & Consumption Lithium battery pack (4 AA Saft LS 14500): endurance varies, but is usually limited by memory (see manual)
Housing, Depth Rating, & Weight Plastic, 600 m, Weight (with embedded thermistor): 1.1 kg in air, 0.5 kg in water
Titanium, 10,500 m, Weight (with embedded thermistor): 1.6 kg in air, 1.0 kg in water

 

 

 

The list below includes (as applicable) the current product brochure, manual, and quick guide; software manual(s); and application notes.

SeatermV2© is a terminal program launcher for setup and data upload of Sea-Bird instruments developed or redesigned in 2006 and later. The common feature of this generation of instruments is the ability to output status responses in XML. SeatermV2 is part of our Seasoft V2 software suite.
Version 2.6.1 released June 1, 2016
SeatermV2.6.1-b12.exe for Windows XP/Vista/7


SBE Data Processing© consists of modular, menu-driven routines for converting, editing, processing, and plotting of oceanographic data acquired with Sea-Bird profiling CTDs, thermosalinographs, and the SBE 16 and 37 families of moored CTDs. SBE Data Processing is part of our Seasoft V2 software suite.
Version 7.26.6 released December 7, 2016


Plot39© is used to plot ASCII data (.asc file) that has been uploaded from the SBE 39plus, 39, or 39-IM. Plot39 is part of our Seasoft V2 software suite.
Version 1.00c released August 29, 2011
Plot39_V1_00c.exe for Windows XP/Vista/7


What are the typical data processing steps recommended for each instrument?

Section 3: Typical Data Processing Sequences in the SBE Data Processing manual provides typical data processing sequences for our profiling CTDs, moored CTDs, and thermosalinographs. Typical values for aligning, filtering, etc. are provided in the sections detailing each module of the software. This information is also documented in the software's Help file. To download the software and/or manual, go to SBE Data Processing.

How should I pick the pressure sensor range for my CTD? Would the highest range give me the most flexibility in using the CTD?

While the highest range does give you the most flexibility in using the CTD, it is at the expense of accuracy and resolution. It is advantageous to use the lowest range pressure sensor compatible with your intended maximum operating depth, because accuracy and resolution are proportional to the pressure sensor's full scale range. For example, the SBE 9plus pressure sensor has initial accuracy of 0.015% of full scale, and resolution of 0.001% of full scale. Comparing a 2000 psia (1400 meter) and 6000 psia (4200 meter) pressure sensor:

  • 1400 meter pressure sensor ‑ initial accuracy is 0.21 meters and resolution is 0.014 meters
  • 4200 meter pressure sensor ‑ initial accuracy is 0.63 meters and resolution is 0.042 meters

How often do I need to have my instrument and/or auxiliary sensors recalibrated? Can I recalibrate them myself?

General recommendations:

  • Profiling CTD — recalibrate once/year, but possibly less often if used only occasionally. We recommend that you return the CTD to Sea-Bird for recalibration. (In principle, it is possible for calibration to be performed elsewhere, if the calibration facility has the appropriate equipment andtraining. However, the necessary equipment is quite expensive to buy and maintain.) In between laboratory calibrations, take field salinity samples to document conductivity cell drift.
  • Thermosalinograph — recalibrate at least once/year, but possibly more often depending on the degree of bio-fouling in the water.
  • DO sensor —
    — SBE 43 — recalibrate once/year, but possibly less often if used only occasionally and stored correctly (see Application Note 64), and also depending on the amount of fouling and your ability to do some simple validations (see Application Note 64-2)
    — SBE 63 — recalibrate once/year, but possibly less often if used only occasionally and stored correctly and also depending on the amount of fouling and your ability to do some simple validations (see SBE 63 manual)
  • pH sensor —
    — SBE 18 pH sensor or SBE 27 pH/ORP sensor — recalibrate at the start of every cruise, and then at least once/month, depending on use and storage
    — Satlantic SeaFET pH sensor — recalibrate at least once/year. See FAQ tab on Satlantic's SeaFET page for details (How often does the SeaFET need to be calibrated?).
  • Transmissometer — usually do not require recalibration for several years. Recalibration at the manufacturer’s factory is the most practical method.

Profiling CTDs:

We often have requests from customers to have some way to know if the CTD is out of calibration. The general character of sensor drift in Sea-Bird conductivity, temperature, and pressure measurements is well known and predictable. However, it is very difficult to know precisely how far a CTD calibration has drifted over time unless you have access to a very sophisticated calibration lab. In our experience, an annual calibration schedule will usually maintain the CTD accuracy to within 0.01 psu in Salinity.

Conductivity drifts as a change in slope as a result of accumulated fouling that coats the inside of the conductivity cell, reducing the area of the cell and causing an under-reporting of conductivity. Fouling consists of both biological growth and accumulated oils and inorganic material (sediment). Approximately 95% of fouling occurs as the cell passes through oil and other contaminants floating on the sea surface. Most conductivity fouling is episodic, as opposed to gradual and steady drift. Most fouling events are small and mostly transitory, but they have a cumulative affect over time. A severe fouling event, such as deployment through an oil spill, could have a dramatic but only partially recoverable effect, causing an immediate jump shift toward lower salinity. As fouling becomes more severe, the fit becomes increasingly non-linear and offsets and slopes no longer produce adequate correction, and return to Sea-Bird for factory calibration is required. Frequently checking conductivity drift is likely to be the most productive data assurance measure you can take. Comparing conductivity from profile to profile (as a routine check) will allow you to detect sudden changes that may indicate a fouling event and the need for cleaning and/or re-calibration.

Temperature generally drifts slowly, at a steady rate and predictably as a simple offset at the rate of about 1-2 millidegrees per year. This is approximately equal to 1-2 parts per million in Salinity error (very small).

Pressure sensor drift is also an offset, and annual comparisons to an accurate barometer to determine offset will generally keep the sensor within specification for several years, particularly as the sensors age over time.

Do I need to remove batteries before shipping my instrument for a deployment or to Sea-Bird?

Alkaline batteries can be shipped installed in the instrument. See Shipping Batteries for information on shipping instruments with Lithium or Nickel-Metal Hydride (NiMH) batteries.

Do I need to clean the exterior of my instrument before shipping it to Sea-Bird for calibration?

Remove as much biological material and/or anti-foul coatings as possible before shipping. Sea-Bird cannot place an instrument with a large amount of biological material or anti-foul coating on the housing in our calibration bath; if we need to clean the exterior before calibration, we will charge you for this service.

  • To remove barnacles, plug the ends of the conductivity cell to prevent the cleaning solution from getting into the cell. Then soak the entire instrument in white vinegar for a few minutes. After scraping off the barnacles and marine growth, rinse the instrument well with fresh water.
  • To remove anti-foul paint, use a Heavy Duty Scotch-Brite pad (http://www.3m.com/us/home_leisure/scotchbrite/products/scrubbing_scouring.html) or similar scrubbing device.

What are the major steps involved in deploying a moored instrument?

Application Note 83: Deployment of Moored Instruments contains a checklist, which is intended as a guideline to assist you in developing a checklist specific to your operation and instrument setup.

What are the recommended practices for storing sensors at low temperatures, and deploying at low temperatures or in frazil or pancake ice?

General

Large numbers of Sea-Bird conductivity instruments have been used in Arctic and Antarctic programs.

Special accommodation to keep temperature, conductivity, oxygen, and optical sensors at or above 0 C is advised. Often, the CTD is brought inside protective doors between casts to achieve this.

Conductivity Cell

When freezing is possible, we recommend that the conductivity sensor be stored dry. Remove larger droplets of water by blowing through the cell. Do not use compressed air, which typically contains oil vapor. Attach a length of Tygon tubing to each end of the conductivity cell to close the cell ends. See Application Note 2D: Instructions for Care and Cleaning of Conductivity Cells for details.

There are several considerations to weigh when contemplating deployments at low temperatures in general, and in frazil or pancake ice:

  • Ensure that the instrument is at or above water temperature before it is deployed. If the cell gets colder than 0 to -2 ºC while on deck, when it enters the water a layer of ice forms inside the cell as the cell warms to ocean temperature. If ice forms inside the conductivity cell, measurements will be low of correct until the ice layer melts and disappears. Thin layers of ice will not hurt the conductivity cell, but repeated ice formation on the electrodes will degrade the conductivity calibration (at levels of 0.001 to 0.020 psu) and thicker layers of ice can lead to glass fracture and permanent damage of the cell.
  • For accurate measurements, keep ice out of the sensing region of the conductivity cell. The conductivity measurement involves determining the electrical resistance of the water inside the sensor. Ice is essentially a non-conductor. To the extent that ice displaces the water, the conductivity will register (very) misleadingly low. Some type of screening is necessary to keep ice out of the cell. This is relatively easy to arrange for the Sea-Bird conductivity cell, which is an electrode-type cell, because its sensing region is totally inside a long tube; plastic mesh could be positioned at each end and would have zero effect on accuracy and stability.

The above considerations apply to all known conductivity sensor types, whether electrode or inductive types. 

If deploying at low temperatures but no surface frazil or pancake ice is present, rinse the conductivity cell in one of the following salty solutions (salty water depresses the freezing point) to prevent freezing during deployment. But this does not mean you can store the cell in one of these solutions outside . . . it will freeze.

  • Solution of 1% Triton in sterile seawater (use 0.5-micron filtered seawater or boiled seawater),   or
  • Brine solution (distilled seawater or homemade salt solution that is higher than 35 psu in salinity).

Note that there is still a risk of forming ice inside the conductivity cell if deploying through frazil or pancake ice on the surface, if the freezing point of the salt water is the same as the water temperature. Therefore, we recommend that you deploy the conductivity cell in a dry state for these deployments.

Commercially available alcohol or glycol antifreezes contain trace amounts of oils that will coat the conductivity cell and the electrodes, causing a calibration shift, and consequently result in errors in the data. Do not use alcohol or glycol in the conductivity cell.

Temperature Sensor

In general, neither the accuracy of the temperature measurement nor the survival of the temperature sensor will be affected by ice.

Oxygen Sensor

For the SBE 43 and SBE 63 Dissolved Oxygen sensor, avoid prolonged exposure to freezing temperature, including during shipment. Do not store with water (fresh or seawater), Triton solution, alcohol, or glycol in the plenum. The best precaution is to keep the sensor indoors or in some shelter out of the cold weather.

Can I use a pressure sensor above its rated pressure?

Digiquartz pressure sensors are used in the SBE 9plus, 53, and 54. The SBE 16plus V2, 16plus-IM V2, 19plus V2, and 26plus can be equipped with either a Druck pressure sensor or a Digiquartz pressure sensor. All other instruments that include pressure use a Druck pressure sensor.

  • The overpressure rating for a Digiquartz (as stated by Paroscientific) is 1.2 * full scale. The sensor will provide data values above 100% of rated full scale; however, Sea-Bird does not calibrate beyond the rated full scale.
  • The overpressure rating for a Druck (as stated by Druck) is 1.5 * full scale. The sensor will provide data values above 100% of rated full scale; however, Sea-Bird does not calibrate beyond the rated full scale.

Note: If you use the instrument above the rated range, you do so at your own risk; the product will not be covered under warranty.

Family Model . Housing Pressure Sensor/Range Connector Thermistor Communications
39 P-IM . 1 – 600 m (plastic) 0 – none 0 – None 0 – External 0 – IM & internal USB
      3 – 10,500 m (titanium) 1 – 20 m strain gauge   1 – Internal  
        2 – 100 m strain gauge      
        3 – 350 m strain gauge      
        4 – 600 m strain gauge      
        5 – 1000 m strain gauge      
        6 – 2000 m strain gauge      
        7 – 3500 m strain gauge      
        8 – 7000 m strain gauge      

Example: 39P-IM.13000 is an SBE 39plus-IM with 600 m housing, 350 m strain gauge pressure sensor, no connector, external thermistor, and IM communications (plus internal USB). See table below for description of each selection:

PART # DESCRIPTION NOTES
39P-IM

TEMPERATURE (pressure optional) Recorder with INDUCTIVE MODEM - 64 MB memory, lithium battery (non-hazardous), USB upload cable for internal I/O (PN 172557), Seasoft software, & complete documentation (internal USB I/O cable may be deleted for credit).

Communicating with 1 or more 39plus-IMs requires use of Sea-Bird Inductive Modem Module (IMM) or Surface Inductive Modem (SIM), which provides serial interface (RS-232) between user’s computer & up to 100 IM instruments coupled to single cable. Purchase IMM/SIM & optional Inductive Cable Coupler (ICC) separately.

SBE 39plus-IM Housing (depth) Selections MUST SELECT ONE
39P-IM.1x0x0 600 m plastic housing  
39P-IM.3x0x0 10,500 m titanium housing  
SBE 39plus-IM Pressure Sensor Range (depth) Selections MUST SELECT ONE
39P-IM.x00x0 No pressure sensor Pressure sensor is installed in end cap, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using 39plus-IM, 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)
39P-IM.x10x0 20 m strain gauge pressure sensor
39P-IM.x20x0 100 m strain gauge pressure sensor
39P-IM.x30x0 350 m strain gauge pressure sensor
39P-IM.x40x0 600 m strain gauge pressure sensor
39P-IM.x50x0 1000 m strain gauge pressure sensor
39P-IM.x60x0 2000 m strain gauge pressure sensor
39P-IM.x70x0 3500 m strain gauge pressure sensor
39P-IM.x80x0 7000 m strain gauge pressure sensor
SBE 39plus-IM Thermistor Configuration Selections MUST SELECT ONE
39P-IM.xx000 External thermistor, in pressure protected sheath (~0.5 second response time) Internal thermistor provides more rugged sensor, but slower response. External thermistor provides faster response for when fast sampling required.
39P-IM.xx010 Internal thermistor, imbedded in titanium end cap (~25 second response time)
SBE 39plus-IM Mooring Clamp Wire Size Selections (Specify clamp to match O.D. of mooring wire jacket) MUST SELECT ONE
50382.I Wire guide & 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 67161. '.I' designation indicates that wire guide & clamp are to be installed on instrument at factory.

SBE 39plus-IM shown with 600 m housing & external thermistor.

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:

Wire Diameter Jacket Diameter Recommended Sea-Bird Clamp
3/16 inch (5.0 mm) 0.255 inch (6.5 mm) 1/4 inch
1/4 inch (6.5 mm) 0.330 inch (8.4 mm) 5/16 inch
5/16 inch (8.0 mm) 0.392 inch (9.9 mm) 3/8 inch
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) 1/2 inch
50383.I Wire guide & clamp for 5/16 in. or 8 mm diameter mooring wire
50384.I Wire guide & clamp for 3/8 in. diameter mooring wire
50385.I Wire guide & clamp for 1/2 in. diameter mooring wire
50387.I Wire guide & clamp for 6 mm diameter mooring wire
50388.I Wire guide & clamp for 10 mm diameter mooring wire
50389.I Wire guide & clamp for 12 mm diameter mooring wire
50386.I Wire guide & clamp for 5/8 in. or 16 mm diameter mooring wire
SBE 39plus-IM Net Fender Options — Use with 39IM Mooring Clamp
801634.001I Net Fender for 1/4 in. diameter mooring wire

'I' designation indicates that net fender is to be installed on instrument at factory.

Conical ends of net fender are designed to shed fishing lines or nets.

Net fender retains 1/2 of mooring clamp & 1/2 of inductive modem coupler. All hardware is captured within, guaranteeing no loss of nuts or bolts during deployment. Attach 39plus-IM to mooring cable in 2 steps:

  1. Place net fender & attached clamp against mooring line. Push 39plus-IM into clamp guides.
  2. Holding 39plus-IM & net fender with 1 hand, tighten clamp bolts with a driver in free hand.

       

801634.003I Net Fender for 5/16 in. or 8 mm diameter mooring wire
801634.004I Net Fender for 3/8 in. diameter mooring wire
801634.007I Net Fender for 1/2 in. diameter mooring wire
801634.002I Net Fender for 6 mm diameter mooring wire
801634.001I Net Fender for 8 mm diameter mooring wire
801634.005I Net Fender for 10 mm diameter mooring wire
801634.006I Net Fender for 12 mm diameter mooring wire
801634.008I Net Fender for 5/8 in. or 16 mm diameter mooring wire
SBE 39plus-IM Spares & Accessories
50504 Lithium batteries (spare), package of four 3.6V AA cells (Saft LS 14500) Four cells are included with standard shipment; this is spare. Shipping restrictions apply for shipping spare lithium batteries; see 39plus-IM manual for details. Click here to buy Saft LS 14500 from Amazon.
172557 USB Type A to Mini-B cable, 1.8 m For uploading data quickly using internal USB connector. Included with standard shipment; this is spare.
60058 Desiccant capsules, bottle of 5 Replace desiccant each time you open housing (for example, to replace battery or to connect to internal USB connector).
60069 SBE 39plus-IM spares kit (document 67227)

O-rings & desiccant. Included with standard shipment. Note that desiccant must be replaced each time you open housing, whether to connect to internal USB connector or to replace lithium cells.

31633 Storm shipping case (iM2600) — holds up to 4 SBE 39plus-IM (does not fit 39plus-IMs with net fenders)

Photo shows 6 39plus, but when used with 39plus-IM holds only 4 39plus-IM
Storm shipping case with custom foam inserts holds up to 4 SBE 39plus-IM (shown at right).
  • Injection molded case with HPX resin plastic body, automatic pressure equalization valve, hinged push-button latches, fold-down padded handle, & O-ring seal. Meets airline luggage regulations.
  • Inner dimensions:
    20 x 14 x 7.7 inches (51 x 36 x 20 cm).
  • Outer dimensions:
    21.2 x 16 x 8.3 inches (54 x 41 x 21 cm).

SBE 39plus-IM in net fender does not fit in Storm shipping case.

For or Surface Inductive Modem (SIM), Inductive Modem Module (IMM), and Inductive Cable Coupler (ICC), see separate listings.

Many cables, mount kits, and spare parts can be ordered online.

Cables

  • 171887 To computer COM port (from Surface Inductive Modem), 3 m
    (replaces 801373, DN 32431)
  • 801583 To computer COM port (from Inductive Modem Module), 0.25 m, DN 33049

Mount Kits

To Mooring cable (document 67161 for all sizes)

  • 50382  SBE 39-IM Cable Clamp and Guide Kit, 1/4-inch diameter 
  • 50383  SBE 39-IM Cable Clamp and Guide Kit, 5/16-inch or 8 mm-diameters
  • 50384  SBE 39-IM Cable Clamp and Guide Kit, 3/8-inch diameter
  • 50385  SBE 39-IM Cable Clamp and Guide Kit, 1/2-inch diameter
  • 50386  SBE 39-IM Cable Clamp and Guide Kit, 5/8-inch or 16-mm diameter
  • 50387  SBE 39-IM Cable Clamp and Guide Kit, 6-mm diameter
  • 50388  SBE 39-IM Cable Clamp and Guide Kit, 10-mm diameter
  • 50389  SBE 39-IM Cable Clamp and Guide Kit, 12-mm diameter

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:

Wire Diameter Jacket Diameter Recommended Sea-Bird Clamp
3/16 inch (5.0 mm) 0.255 inch (6.5 mm) 1/4 inch
1/4 inch (6.5 mm) 0.330 inch (8.4 mm) 5/16 inch
5/16 inch (8.0 mm) 0.392 inch (9.9 mm) 3/8 inch
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) 1/2 inch

 

Spare Parts

  • 50504 Lithium batteries (spare), package of four 3.6V AA cells (Saft LS 14500) - Click here to buy Saft LS 14500 from Amazon.
  • 60069 Spares kit for 39plus-IM (document 67227)
  • 233186 High-head pressure port plug for muddy/biologically productive environments (Application Note 84)
  • 31633 Storm shipping case (iM2600) — holds up to 4 SBE 39plus-IMs (does not hold SBE 39plus-IMs with net fenders)

Compare  Moored / Time Series Recording Instruments

SBE Measures
(C, T, P)
Auxiliary Sensors Memory Power Communication Real-Time
Data
Comments
Internal External
SBE 16plus V2 SeaCAT C-T (P) Recorder C, T, P* 6 A/D; 1 RS-232 64 Mb RS-232 Optional pump
SBE 16plus SeaCAT C-T (P) Recorder
C, T, P* 4 A/D; optional RS-232 or PAR 8 Mb RS-232 or -485 Replaced by SBE 16plus V2 in 2008
SBE 16 SeaCAT C-T (P) Recorder
C, T, P* 4 A/D 1 Mb RS-232 Replaced by SBE 16plus in 2001
SBE 16plus-IM V2 SeaCAT C-T (P) Recorder C, T, P* 6 A/D; 1 RS-232 64 Mb   Inductive Modem Optional pump
SBE 16plus-IM SeaCAT C-T (P) Recorder
C, T, P* 4 A/D; optional RS-232 or PAR 8 Mb   Inductive Modem Replaced by SBE 16plus-IM V2 in 2008
SBE 19plus V2 SeaCAT Profiler CTD C, T, P 6 A/D; 
1 RS-232
64 Mb RS-232 Programmable mode — profiling or moored
SBE 19plus SeaCAT Profiler CTD
C, T, P 4 A/D; optional PAR 8 Mb RS-232 Replaced by SBE 19plus V2 in 2008
SBE 19 SeaCAT Profiler CTD
C, T, P 4 A/D 1 - 8 Mb RS-232 Replaced by SBE 19plus in 2001
SBE 37-SM MicroCAT C-T (P) Recorder C, T, P*   8 Mb RS-232 or -485  
SBE 37-SMP MicroCAT C-T (P) Recorder C, T, P*   8 Mb RS-232, RS-485, or SDI-12 Integral pump
SBE 37-SMP-IDO MicroCAT C-T-DO (P) Recorder C, T, P* Integrated DO 8 Mb RS-232 or -485 Integral pump; Replaced by SBE 37-SMP-ODO in 2014
SBE 37-SMP-ODO MicroCAT C-T-DO (P) Recorder C, T, P* Integrated Optical DO 8 Mb RS-232, RS-485, or SDI-12 Integral pump
SBE 37-IM MicroCAT C-T (P) Recorder C, T, P*   8 Mb   Inductive modem  
SBE 37-IMP MicroCAT C-T (P) Recorder C, T, P*   8 Mb   Inductive modem Integral pump
SBE 37-IMP-IDO MicroCAT C-T-DO (P) Recorder C, T, P* Integrated DO 8 Mb   Inductive modem Integral pump; Replaced by SBE 37-IMP-ODO in 2014
SBE 37-IMP-ODO MicroCAT C-T-DO (P) Recorder C, T, P* Integrated Optical DO 8 Mb   Inductive modem Integral pump
SBE 37-SI MicroCAT C-T (P) Recorder C, T, P*   8 Mb   RS-232 or -485  
SBE 37-SIP MicroCAT C-T (P) Recorder C, T, P*   8 Mb   RS-232 or -485 Integral pump

SBE 37-SIP-IDO MicroCAT C-T-DO (P) Sensor

C, T, P* Integrated DO 8 Mb   RS-232 or -485 Integral pump
SBE 39plus Temperature (P) Recorder T, P*   64 Mb Optional USB & RS-232 Optional  
SBE 39 Temperature (P) Recorder
T, P*   32 Mb Optional RS-232 Optional Replaced by SBE 39plus in 2014
SBE 39plus-IM Temperature (P) Recorder T, P*   64 Mb   Inductive Modem & USB  
SBE 39-IM Temperature (P) Recorder T, P*   32 Mb   Inductive modem Replaced by SBE 39plus-IM in 2016
SBE 56 Temperature Logger T   64 Mb   USB    
SBE 26plus Seagauge Wave & Tide Recorder T, P C optional 32 Mb RS-232
(tides, waves, & wave statistics)
Wave & tide recorder
SBE 26 Seagauge Wave & Tide Recorder
T, P C optional 8 Mb RS-232   Replaced by SBE 26plus in 2004
SBE 53 BPR Bottom Pressure Recorder T, P C optional 32 Mb RS-232 Bottom pressure recorder
SBE 54 Tsunameter Tsunami Pressure Sensor T, P   128 Mb Optional RS-232 Tsunami pressure sensor

C = conductivity, T = temperature, P = pressure, DO = dissolved oxygen
* = optional
products are no longer in production. Follow the links above to the product page to retrieve manuals and application notes for these older products.

Compare Inductive Modem Instruments

SBE Measures
(C, T, P)
Auxiliary Sensors Memory Power Comments
Internal External
SBE 16plus-IM V2 SeaCAT C-T (P) Recorder C, T, P* 6 A/D; 1 RS-232 64 Mb   Optional pump
SBE 16plus-IM SeaCAT C-T (P) Recorder
C, T, P* 4 A/D; optional RS-232 or PAR 8 Mb   Replaced by SBE 16plus-IM V2 in 2008
SBE 37-IM MicroCAT C-T (P) Recorder C, T, P*   8 Mb    
SBE 37-IMP MicroCAT C-T (P) Recorder C, T, P*   8 Mb   Integral pump
SBE 37-IMP-IDO MicroCAT C-T-ODO (P) Recorder C, T, P* Integrated DO 8 Mb   Integral pump; Replaced by SBE 37-IMP-ODO in 2014
SBE 37-IMP-ODO MicroCAT C-T-ODO (P) Recorder C, T, P* Integrated Optical DO 8 Mb   Integral pump
SBE 39plus-IM Temperature (P) Recorder T, P*   64 Mb   Includes internal USB connector for fast data upload
SBE 39-IM Temperature (P) Recorder T, P*   32 Mb   Replaced by SBE 39plus-IM in 2016
SBE 44 Underwater Inductive Modem (UIM)   1 RS-232 30 Kb buffer Integrates sensor with standard serial interface (current meter, Doppler profiler, etc.) to inductive modem telemetry system
Underwater Inductive Modem Module (UIMM)   1 RS-232 16 Kb Sample Data Memory   Integrates sensor with standard serial interface (current meter, Doppler profiler, etc.) to inductive modem telemetry system; more flexible and economical than SBE 44

C = conductivity, T = temperature, P = pressure, DO = dissolved oxygen
* = optional

Notes:
1. See Inductive Modem Module (IMM) or Surface Inductive Modem (SIM), and Inductive Cable Coupler (ICC) to complete your inductive modem system.
2. See Application Note 92: Real-Time Oceanography with Inductive Moorings and the Inductive Modem Module (IMM) for background information.
3. products are no longer in production. Follow the links above to the product page to retrieve manuals and application notes for these older products.