The SBE 48 is a high-accuracy temperature recorder with non-volatile memory, designed for shipboard determination of sea surface temperature. Mounted with magnets just below the water line, the SBE 48’s temperature sensor is in contact with the inside of the ship’s hull. The SBE 48’s internal battery runs the real-time clock and can be used to power the instrument for very short deployments; external power is recommended for typical deployments.
Data is recorded in memory and can also be output in real-time in engineering units. Memory capacity exceeds 4.7 million samples of temperature and time; this yields approximately 54 days of data when sampling every 1 sec.
- Temperature and time on command, continuously at approximately 1 sample/sec, or at user-programmable 3-sec to 9-hour intervals.
- RS-232 interface.
- Internal memory (4.7 million samples), powered externally.
- Seasoft© V2 Windows software package (setup, data upload, and data processing).
- Five-year limited warranty.
|Measurement Range||-5 to +35 °C|
|Initial Accuracy||± 0.002 °C|
|Typical Stability||0.0002 °C per month|
|Clock Accuracy||1 minute/year|
|Sampling Speed||Approximately 1 Hz (1 sample/sec), or
user-programmable 3-sec to 9-hour intervals
|Memory||4.7 million samples (temperature and time)|
|Internal Battery||9V non-hazardous lithium battery.
Runs real-time clock (5 - 10 year battery endurance).
Can power SBE 48 for up to 180,000 samples if external power not supplied.
|External Power||8 - 16 VDC|
|Power Consumption||Quiescent Current: 10 µA
Operating Current: 0.015 A-sec/sample; 15 mA for continuous sampling
|Title||Type||Publication Date||PDF File|
|SBE 48 Brochure||Product Brochure||Monday, August 24, 2015||48brochureAug15.pdf|
|SBE 48 Manual||Product Manual||Monday, July 11, 2016||48_006.pdf|
|SBE 48 Quick Guide||Product Quick Guide||Monday, July 28, 2008||48_referencesheet_003.pdf|
|AN42: ITS-90 Temperature Scale||Application Notes||Wednesday, May 18, 2016||appnote42May16.pdf|
|AN68: Using USB Ports to Communicate with Sea-Bird Instruments||Application Notes||Friday, October 19, 2012||appnote68Oct12.pdf|
HULL TEMPERATURE SENSOR - Includes 32 MB usable memory, RS-232 interface, lithium back up battery (non-hazardous), 2.4 m data I/O cable 801431 (data I/O cable may be deleted for credit), Seasoft software, & complete documentation.