SBE 3plus Modular Oceanographic Temperature Sensor

Overview
Intended primarily for use on the SBE 911plus profiling CTD (3plus) and the 25plus profiling CTD (3F), the SBE 3 can also be used as a component in custom oceanographic systems or for high-accuracy industrial and environmental temperature monitoring applications.

The superior performance of the SBE 3plus results from its optimized electronic design, superior calibration, response characterization, and quality testing program. The SBE 3plus is a more rigorously tested and calibrated version of our SBE 3F, demonstrating drift of less than 0.001 °C during a six-month screening period. In addition, the time response is carefully measured and verified to be 0.065 ± 0.010 sec.

Feature :
•    Glass-coated thermistor bead, pressure-protected in 0.8 mm diameter thin-walled stainless steel tube. Exponentially related to temperature, the thermistor resistance is the controlling element in an optimized Wien Bridge oscillator circuit. Resulting sensor frequency is inversely proportional to the square root of the thermistor resistance and ranges from approximately 2 to 6 kHz, corresponding to -5 to +35 °C.
•    Built-in acquisition circuits and frequency outputs; allows for calibration as separate modules.
•    Individually calibrated in Sea-Bird’s state-of-the-art calibration baths. 
•    Overall system accuracy limited only by the accuracy of the CTD’s master clock. Errors from this source are demonstrably negligible (in the SBE 911plus, clock error contribution is 0.00016 °C, based on a five-year worst case error budget, including ambient temperature influence of 1 ppm total over -20 to +70 °C, plus 1 ppm first year drift, plus four additional year’s drift at 0.3 ppm/ year).
•    6800 m aluminum or 10,500 m titanium housing.
•    Five-year limited warranty.

Options
• Aluminum (6800 m) or titanium (10,500 m) housing
• XSG or wet-pluggable MCBH connector

To See SBE 3F/3Plus/3S Oceanographic Temperature Sensor Detail, Visit Website Sea Bird Electronic

SBE 3Plus Datasheet