SBE 39plus - just a few of the configuration choices

SBE 39plus Temperature (P) Recorder

Temperature and (optional) Pressure, at user-programmable intervals. Internal memory and battery pack, RS-232 and USB interface. Configurations with internal or external thermistor, external connector, pressure.

With optional clamp

The SBE 39plus is a high-accuracy, fast-sampling temperature (pressure optional) recorder with USB interface, internal batteries, and memory. The 39plus is designed for moorings or other long-duration, fixed-site deployments, as well as deployments on nets, towed vehicles, or ROVs.

Data is recorded in memory and can also be output in real-time. Measured data are output in engineering units.

Memory capacity exceeds 9.5 million samples without pressure, or 5.5 million samples with pressure. Sampling every 0.5 sec, this yields approximately 55 days of data without pressure or 32 days with pressure (battery endurance exceeds memory capacity).

FEATURES

  • Temperature, Pressure (optional), and time, at user-programmable 0.5-sec to 6-hour intervals.
  • Internal USB interface (open housing and plug in cable for setup and fast data upload); plus RS-232 interface (through external connector).
  • Internal memory and battery pack (can be powered through external connector).
  • 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 — faster sampling, more power and memory, but same housing and compatible output (39plus to 39 comparison).
  • Five-year limited warranty.

COMPONENTS

  • 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).
  • High-accuracy real-time clock.

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.
  • External connector (XSG or wet-pluggable MCBH) for RS-232 interface, external power, and real-time data.
  • Mooring clamp
  • 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

Initial Accuracy

Temperature ± 0.002 (-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

Power Supply & Consumption Lithium battery pack (4 AA Saft LS 14500: > 11,000,000 samples TD
Optional External Power 9 - 30 VDC (requires external connector)
Memory Capacity 9.5 million samples T; 5.5 million samples TD
Housing, Depth Rating, & Weight PET Plastic: 600 m, Weight (with embedded  thermistor, no external connector) 0.6 kg in air, 0.3 kg in water
Titanium: 10,500 m, Weight (with external thermistor, no external connector) 1.2 kg in air, 0.7 kg in water

 

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

Title Type Publication Date PDF File
SBE 39plus Brochure Product Brochure Monday, December 29, 2014 39plusbrochureDec14.pdf
SBE 39plus Manual Product Manual Wednesday, June 15, 2016 39plus_004.pdf
SBE Data Processing Manual Software Manual Thursday, May 26, 2016 SBEDataProcessing_7.26.0.pdf
Field Service Bulletin 28: SBE 39plus / SBE 56 USB Connectivity Problem Field Service Bulletins Wednesday, July 29, 2015 FSB28.pdf
SBE 39plus Quick Guide Product Quick Guide Tuesday, September 2, 2014 39plus_referencesheet_001.pdf
AN27D: Minimizing Strain Gauge Pressure Sensor Errors Application Notes Wednesday, May 18, 2016 appnote27DMay16.pdf
AN42: ITS-90 Temperature Scale Application Notes Wednesday, May 18, 2016 appnote42May16.pdf
AN57: Connector Care and Cable Installation Application Notes Tuesday, May 13, 2014 appnote57Jan14.pdf
AN68: Using USB Ports to Communicate with Sea-Bird Instruments Application Notes Friday, October 19, 2012 appnote68Oct12.pdf
AN69: Conversion of Pressure to Depth Application Notes Monday, July 1, 2002 appnote69.pdf
AN71: Desiccant Use and Regeneration (drying) Application Notes Wednesday, May 18, 2016 Appnote71May16.pdf
AN73: Using Instruments with Pressure Sensors at Elevations Above Sea Level Application Notes Thursday, May 19, 2016 appnote73May16.pdf
AN83: Deployment of Moored Instruments Application Notes Thursday, May 19, 2016 appnote83May16.pdf
AN84: Using Instruments with Druck Pressure Sensors in Muddy or Biologically Productive Environments Application Notes Tuesday, January 14, 2014 appnote84Jan14.pdf
Deployment Endurance Calculator is an aid for quickly determining the maximum deployment length for a moored instrument, based on battery capacity. Deployment Endurance Calculator is part of our Seasoft V2 software suite.
Version 1.7.0 released March 23, 2016
DeploymentEnduranceCalcV1.7.0-b88.exe for Windows XP/Vista/7


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 7.26.2 released September 6, 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 recommended practices for connectors - mating and unmating, cleaning corrosion, and replacing?

Mating and Unmating Connectors:

It is important to prepare and mate connectors correctly, both in terms of the costs to repair them and to preserve data quality. Leaking connectors cause noisy data and even potential system shutdowns. Application Note 57: Connector Care and Cable Installation describes the proper care and installation of connectors for Sea-Bird instruments. The Application Note covers connector cleaning and cable or dummy plug installation, locking sleeve installation, and cold weather tips.

Checking for Leakage and Cleaning Corrosion on Connectors:

If there has been leakage, it will show up as green-colored corrosion product. Performing the following steps can usually reverse the effect of the leak:

  1. Thoroughly clean the connector with water, followed by alcohol.
  2. Give the connector surfaces a light coating of silicon grease.

Re-mate the connectors properly — see Application Note 57: Connector Care and Cable Installation and 9-minute video covering O-ring, connector, and cable maintenance.

Replacing Connectors:

  • The main concern when replacing a bulkhead connector is that the o-rings on the connector and end cap must be prepared and installed correctly; if they are not, the instrument will flood. See the question below for general procedure on handling o-rings.
  • Use a thread-locking compound on the connector threads to prevent the new connector from loosening, which could also lead to flooding.
  • If the cell guard must be removed to open the instrument, take extra care not to break the glass conductivity cell.

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 the 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.

How do instruments handle external power if internal batteries are installed?

Most Sea-Bird instruments that are designed to be powered internally or externally incorporate diode or'd circuitry, allowing only the voltage that has the greater potential to power the instrument. You can power the instrument externally without running down the internal batteries. This allows you to lab test using external power that has higher voltage than the internal batteries, and then deploy using internal power, knowing that the internal batteries are fresh.

For the SBE 25plus, if external power of 14 volts or higher is applied, the 25plus runs off of the external power, even if the main battery voltage is higher.

What is the maximum cable length for real-time RS-232 data?

Cable length is one of the most misunderstood items in the RS-232 world. The RS-232 standard was originally developed decades ago for a 19200 baud rate, and defines the maximum cable length as 50 feet, or the cable length equal to a capacitance of 2500 pF. The capacitance rule is often forgotten; using a cable with low capacitance allows you to span longer distances without going beyond the limitations of the standard. Also, the maximum cable length mentioned in the standard is based on 19200 baud rate; if baud is reduced by a factor of 2 or 4, the maximum length increases dramatically. Using typical underwater cables, allowable combinations of cable length and baud rate for Sea-Bird instruments communicating with RS-232 are shown below:

Maximum Cable Length (meters) Maximum Baud Rate*
1600 600
800 1200
400 2400
200 4800
100 9600
50 19,200
25 38,400
16 57,600
8 115,200

*Note: Consult instrument manual for baud rates supported for your instrument.

 

Why am I having trouble connecting via the SBE 39plus or SBE 56 internal USB connector?

In July 2015, Sea-Bird released updated software to address intermittent connectivity issues where the host computer or SeatermV2 cannot recognize an instrument communicating via its internal USB connector. Field Service Bulletin 28 describes the problem and the installation of updated software to solve the problem.

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.

Family Model . Housing Pressure Sensor/Range Connector Thermistor Communications
39 P . 1 – 600 m (plastic) 0 – none 0 – None 0 – External 0 – USB & (for connectors
'1' & '2') RS-232
      3 – 10,500 m (titanium) 1 – 20 m strain gauge 1 – XSG 1 – Internal  
        2 – 100 m strain gauge 2 – MCBH    
        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.13210 is an SBE 39plus with 600 m housing, 350 m strain gauge pressure sensor, MCBH connector, internal thermistor, and RS-232 & USB communications. See table below for description of each selection:

PART # DESCRIPTION NOTES
39plus

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

 
SBE 39plus Housing (depth) Selections MUST SELECT ONE
39P.1xxx0 600 m plastic housing  
39P.2xxx0 10,500 m titanium housing  
SBE 39plus Pressure Sensor Range (depth) Selections MUST SELECT ONE
39P.x0xx0 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, 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.x1xx0 20 m strain gauge pressure sensor
39P.x2xx0 100 m strain gauge pressure sensor
39P.x3xx0 350 m strain gauge pressure sensor
39P.x4xx0 600 m strain gauge pressure sensor
39P.x5xx0 1000 m strain gauge pressure sensor
39P.x6xx0 2000 m strain gauge pressure sensor
39P.x7xx0 3500 m strain gauge pressure sensor
39P.x8xx0 7000 m strain gauge pressure sensor
SBE 39plus Connector Selections MUST SELECT ONE
39P.xx0x0 No external connector (communication only via internal USB connector)

All options include cable 172557 (USB cable for communications with internal USB connector).

  • 39P.xx0x0 — For 39plus without external connector, instrument setup & data upload require opening housing by unscrewing end cap; communication is via internal USB connector.
  • 39P.xx1x0 & 39P.xx2x0 — 39plus with external connector allows instrument setup & data upload without opening housing. Communication via internal USB connector provides fast upload of large data sets.

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 XSG/AG connectors. Like XSG/AG connectors, wet-pluggables need proper lubrication & require care during use to avoid trapping water in sockets.

   
XSG connector on left, Wet-pluggable (MCBH) connector on right

39P.xx1x0 XSG connector (order external I/O cable separately)
39P.xx2x0 Wet-pluggable (MCBH) connector (order external I/O cable separately)
SBE 39plus Thermistor Configuration Selections MUST SELECT ONE
39P.xxx00 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.xxx10 Internal thermistor, imbedded in titanium end cap (~25 second response time)
SBE 39plus Mooring Clamp Options (2 clamps & titanium housing should be used if mooring subjected to high dynamic motion. Specify clamp to match O.D. of mooring wire jacket)
39p-4a One plastic mounting clamp for 1/4 in. diameter mooring wire

See document 67162 & drawing 41396.

SBE 39plus shown with 10,500 m titanium housing, internal I/O connector, & external thermistor, as well as 1 mounting clamp.

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

For mounting on a rope, verify the rope outer diameter, and select a clamp smaller than the rope O.D. to account for the rope compressibility (for example, for 5/16 inch rope, select a ¼ inch clamp; a 5/16 inch clamp will be too large).

39p-4b One plastic mounting clamp for 5/16 in. diameter mooring wire
39p-4c One plastic mounting clamp for 3/8 in. diameter mooring wire
39p-4d One plastic mounting clamp for 1/2 in. diameter mooring wire
39p-4e One plastic mounting clamp for 6 mm diameter mooring wire
39p-4f One plastic mounting clamp for 8 mm diameter mooring wire
39p-4g One plastic mounting clamp for 10 mm diameter mooring wire
39p-4h One plastic mounting clamp for 12 mm diameter mooring wire
39p-4i One plastic mounting clamp for 16 mm (5/8 in.) diameter mooring wire
SBE 39plus Net Fender Options — Requires one Mooring Clamp
39p-5a Net Fender for 1/4 in. diameter mooring wire

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

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

  1. Place net fender & attached clamp against mooring line. Push 39plus into clamp guides.
  2. Holding 39plus & net fender with 1 hand, tighten clamp bolts with a driver in free hand.
39p-5b Net Fender for 5/16 in. diameter mooring wire
39p-5c Net Fender for 3/8 in. diameter mooring wire
39p-5d Net Fender for 1/2 in. diameter mooring wire
39p-5e Net Fender for 6 mm. diameter mooring wire
39p-5f Net Fender for 8 mm. diameter mooring wire
39p-5g Net Fender for 10 mm. diameter mooring wire
39p-5h Net Fender for 12 mm. diameter mooring wire
39p-5i Net Fender for 16 mm (5/8 in.) diameter mooring wire
SBE 39plus 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 SBE 39plus manual for details. Click here to buy Saft LS 14500 from Amazon.
801376 Data/Power interface cable, RMG-4FS to DB-9S & 9V battery snap, 2.4 m (DN 32604) Order 801376 or 801355 for 39plus with XSG external connector.
801385 Data/Power interface cable, RMG-4FS to DB-9S & red/black twisted wire leads, 2.4 m (DN 32277)
172557 USB Type A to Mini-B cable, 1.8 m For connection to internal USB connector. Included with standard shipment; this is spare.
801836 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.
801263 Data/Power interface cable, Wet-Pluggable, MCIL-4FS to DB-9S & 9V battery snap, 2.4 m (DN 32490) Order 801263 or 801206 for 39plus with wet-pluggable MCBH external connector.
801206 Data/Power interface cable, Wet-Pluggable, MCIL-4FS to DB-9S & red/black twisted wire leads, 2.4 m (DN 32366)
20200 USB to Serial Port Adapter, FTDI UC232R-10 (connects computers with USB ports to RS-232 instruments) Many newer PCs & laptop computers have USB port(s) instead of RS-232 serial port(s). USB serial adapter plugs into USB port, & allows a serial device to be connected through adapter. Multi-port adapters are available from other companies; see Application Note 68.
60058 Desiccant capsules, bottle of 5 (for use in 39plus with external connector) Because of space considerations, 39plus with no external connector uses a different desiccant than 39plus with external connector. Replace desiccant each time you open 39plus housing (for example, to replace battery or to connect to internal USB connector). See Application Note 71 for information on desiccant.
60039 Desiccant Packs (Sorb-it, 1 gram), can of 25 (for use in 39plus with no external connector)
60069 SBE 39plus spares kit for SBE 39plus with external connector (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 I/O connector (if applicable) or to replace lithium cells.
  • 60069 is for SBE 39plus with external connector
  • 60070 is for SBE 39plus with no external connector
60070 SBE 39plus spares kit for SBE 39plus with no external connector (document 67228)
31633 Storm shipping case (iM2600) — holds up to 4 SBE 39plus with external connector or 6 SBE 39plus with internal connector (does not hold SBE 39s with net fenders) Storm shipping case with custom foam inserts holds up to 4 SBE 39plus with external connector or 6 SBE 39plus with internal connector (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 in net fender does not fit in Storm shipping case.

 

Cables

  • 801836 To computer COM port (from internal RS-232 connector), 0.3 m, DN 33406
  • 172557 To computer USB port (from internal USB connector), 1.8 m
  • 801376 To computer COM port with 9V connector (from external XSG connector), 2.4 m, DN 32604
  • 801385 To computer COM port with power leads (from external XSG connector), 2.4 m, DN 32277
  • 801263 To computer COM port with 9V connector (from external Wet-pluggable connector), 2.4 m, DN 32490
  • 801206 To computer COM port with power leads (from external Wet-pluggable connector), 2.4 m, DN 32366

Mount Kits

To Mooring cable (for use with SBE 39plus with or without fairing/net fender) (document 67162 & drawing 41396 for all sizes)

  • 50377  SBE 39 Cable Clamp Kit, 1/4-inch or 6-mm diameter
  • 50378  SBE 39 Cable Clamp Kit, 5/16-inch or 8-mm diameter
  • 50379  SBE 39 Cable Clamp Kit, 3/8-inch or 10-mm diameter
  • 50380  SBE 39 Cable Clamp Kit, 1/2-inch or 12-mm diameter
  • 50381  SBE 39 Cable Clamp Kit, 5/8-inch or 16-mm diameter
  • 50423  SBE 39 Cable Clamp Kit, 3/4-inch or 19-mm diameter
  • 50448  SBE 39 Cable Clamp Kit, 7/16-inch or 11.3-mm diameter
  • 50523  SBE 39 Cable Clamp Kit, 9/16-inch or 14-mm diameter
  • 50459  SBE 39 Cable Clamp Kit, 18-mm diameter
  • 50534  SBE 39 Cable Clamp Kit, 20-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

For mounting on a rope, verify the rope outer diameter, and select a clamp smaller than the rope O.D. to account for the rope compressibility (for example, for 5/16 inch rope, select a ¼ inch clamp; a 5/16 inch clamp will be too large).

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.
  • varies Cable clamp kit for SBE 39, for use with or without fairing/net fender (document 67162 & drawing 41396)
  • 60069 Spares kit for SBE 39plus with external connector (document 67227)
  • 60070 Spares kit for SBE 39plus with no external connector (document 67228)
  • 233186 High-head pressure port plug for muddy/biologically productive environments (for instrument with Druck pressure sensor) (Application Note 84)
  • 31633 Storm shipping case (iM2600) — holds up to 4 SBE 39plus with external connectors or 6 SBE 39plus with internal connectors (does not hold SBE 39plus 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.