Temperature (& Pressure) RecorderSBE 39plus
Temperature (& Pressure) Recorder
Print version
Current manual and Reference Sheet - coming soon
Configuration options & accessories
Comparison to SBE 39
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SUMMARY
DESCRIPTION
The SBE 39plus is a high-accuracy temperature (pressure optional) recorder with internal battery pack and non-volatile memory for deployment at depths up to 10,500 meters. The 39plus is intended for moorings or other long-term, fixed-site applications, as well as deployments on nets, towed vehicles, or ROVs. Calibration coefficients are stored in EEPROM, allowing output in decimal or XML ASCII engineering units (raw output available).
The thermistor, the same sensor used in the SBE 16plus V2 SeaCAT and 37 MicroCAT, has a long history of exceptional accuracy and stability; drift is typically less than 0.002 °C/year. Two configurations are offered:
The optional strain-gauge pressure sensor is available in eight ranges, from 20 to 7000 m. Compensation of temperature influence on pressure offset and scale is performed by the 39plus' CPU.
COMMUNICATIONS AND INTERFACING
The SBE 39plus setup and data upload is via one of the following:
The user can upgrade firmware through the USB connector.
User-selectable operating modes include:
DATA STORAGE AND UPLOAD, AND BATTERY ENDURANCE
The SBE 39plus' non-volatile FLASH memory can store over 5.5 million samples of T, P, and time. The internal USB connector provides fast upload of large data sets.
With its lithium battery pack, the SBE 39plus can acquire and transmit 11-12 million samples of T, P, and time (if transmitting real-time, it continues sampling and transmitting data after the memory is full, and will not overwrite data in memory). Sampling at 0.5-sec intervals, this yields approximately 72 days of data.
CONFIGURATION
SBE 39plus options include:
CALIBRATION
The SBE 39's inherent accuracy, resolution, and stability, combined with a rigorous 11-point temperature calibration, yields a true research-quality tool. Primary temperature standards (water triple point and gallium melting point cells) and state-of-the-art equipment are maintained in our NIST-traceable calibration facility. Pressure calibrations are referenced to specially maintained (at Sea-Bird) Paroscientific Digiquartz sensors that trace to Paroscientific's pressure standard.
SOFTWARE
The SBE 39 is supplied with a powerful Windows software package, Seasoft© V2, for communication, data upload, data conversion, plotting, and export to other programs.
SPECIFICATIONS
| Measurement Range | Initial Accuracy | Typical Stability | Resolution | |
|
Temperature (°C) |
-5 to 35 | ± 0.002 | 0.0002 per month | 0.0001 |
| Optional Pressure |
20 / 100 / 350 /
600 / 1000 / 2000 / 3500 / 7000 meters (Expressed in meters of deployment depth capability) |
± 0.1% of full scale range | 0.05% of full scale range per year | 0.002% of full scale range |
Clock Accuracy: 5 sec/month
Power Supply/Endurance: lithium battery pack (4 AA Saft LS 14500) > 11,000,000 samples
Acquisition Current (per sample):
Data Transmission Current: 6 milliamps (time dependent on baud and output format; see manual for details)
Quiescent Current: 25 microamps
External Power (with external I/O connector): 9 - 30 VDC
Memory: 64 Mbyte non-volatile FLASH
Housing (depth rating):
Weight:
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Configuration (without external connector) |
In Air | In Water |
| Plastic housing, with embedded thermistor * | 0.6 kg (1.2 lbs) | 0.25 kg (0.6 lbs) |
| Titanium housing, with thermistor in sheath * | 1.2 kg (2.6 lbs) | 0.7 kg (1.6 lbs) |
| * Other configurations vary slightly. | ||
ADDITIONAL INFORMATION / LINKS:
Documentation -- manual, photos, technical papers, application notes, etc.
Sales Information -- options, accessories, cables, mount kits, spares, etc.
Software -- components of Seasoft V2
Links to Other Instruments of Interest
Specifications are subject to change without notice.
Sea-Bird Home Phone: (+1) 425-643-9866 E-mail: seabird@seabird.com
