SBE 43 Dissolved Oxygen Sensor

The SBE 43 and SBE 43F are individually calibrated, high-accuracy oxygen sensor to assist in critical hypoxia and ocean stoichiometric oxygen chemistry research on a variety of profiling and moored platforms. Careful choices of materials, geometry, and sensor chemistry are combined with superior electronics and calibration methodology to yield significant gains in performance. The SBE 43 is designed for use in a CTD’s pumped flow path, providing optimal correlation with CTD measurements. The SBE 43F frequency output sensor can be integrated with SBE 52-MP or Glider Payload CTD, or used for OEM applications (requires OEM circuit board). Elapsed time between the CTD and associated oxygen measurement is easily quantified, and corrected for, in post-processing. The black plenum and plumbing’s black tubing blocks light, reducing in-situ algal growth. Plumbing isolates the SBE 43 from continuous exposure to the external environment, allowing trapped water to go anoxic and minimizing electrolyte consumption between samples for moored deployments.

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Key Features Specifications Resources Content

Key Features

Voltage or frequency output. Fully and individually calibrated; calibration drift rates of less than 0.5% over 1000 hours of operation (on time). For use in CTD pumped flow path, optimizing correlation with CTD measurements. Oxygen measurement dramatically improved because of improved temperature response. Signal resolution increased by on-board temperature compensation. Continuous polarization eliminates stabilization wait-time after power-up. Hysteresis largely eliminated in upper ocean (1000 m) due to improved temperature response. Hysteresis at greater depths predicatable and correctable in post-processing. No degradation of signal or calibration when used for profiling in hydrogen sulfide environments. 600 or 7000 m housing. Five-year limited warranty (during warranty period, one sensor re-charge [electrolyte refill, membrane replacement, recalibration] performed free of charge).

Parameters Measured

Oxygen

Specifications

Specification	Value
Communication Options	Frequency , analog
Depth Rating (Meters)	600m, 7000m
Power Source	External
Housing Material Options	Plastic, Titanium
Connector	MCBH , IE55
Power Consumption	6.5 - 24 VDC; 60 milliwatts (SBE 43) or 45 milliwatts (SBE 43F)
Accuracy	± 2% of saturation
Software	Seasoft© V2