Sea-Bird Scientific

Moored

Fixed sensors for long-term data

Moored instruments remain in fixed positions for extended deployments in oceans, lakes, and reservoirs. They deliver continuous observations that help track seasonal cycles, long-term environmental changes, and ecosystem health across diverse parameters.

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Sensor	Accuracy	Resolution	Depth Rating	Sampling Rate
SBE 16plus V2 SeaCAT CTD	Conductivity ± 0.0005 S/m Temperature ± 0.005 °C Optional Pressure Strain-gauge ± 0.1% of full scale rang	Resolution Conductivity 0.00005 S/m typical Temperature 0.0001 °C Optional Pressure Strain-gauge 0.002% of full scale range; Quartz 0.0006% of full scale range for 1-sec integration	600 m, 10500 m	10-14 seconds From user manual
Deep SUNA Nitrate Sensor	± 2 uM (±0.028 mg/l-N) or ± 10% of reading	Not specified	2000 m	1 Hz (1 sample/sec)
ECO-PAR™	Calibration accuracy: ±5% NIST traceable in air	14 bit	300 m	User-selectable to 8 Hz
ac-s	± 0.01 m-1	4 nm	500 m, 5000 m	4 scans/second
SBE 39plus Temperature Recorder	Temperature ± 0.002 °C (-5 to +35 °C); ± 0.01 °C (+35 to +45 °C) Optional Pressure ± 0.1% of full scale range	Temperature 0.0001 °C Optional Pressure 0.002% of full scale range	600 m	Up to 2 Hz (2 samples/sec)
SBE 38 Digital Oceanographic Thermometer	± 0.001 °C (1 mK)	0.00025 °C (0.25 mK)	10500 m	500 msec
SBE 56 Temperature Logger	± 0.002 °C (-5 to to 35 °C); ± 0.01 °C (35 °C to 45 °C)	0.0001 °C	1500 m	Up to 2 Hz (2 samples/sec)
SBE 63 Optical Dissolved Oxygen Sensor	Larger of ± 3 µmol/kg (equivalent to 0.07 ml/L or 0.1 mg/L) or ± 2%	0.2 µmol/kg	600 m, 7000 m	1 Hz (1 sample/sec)
SUNA V2	Dependent on path length and concentration range	Not specified	500 m, 100 m	1 Hz (1 sample/sec)
SeapHOx™ V2 Ocean pH Sensor	Conductivity ± 0.0003 S/m (0.003 mS/cm) Temperature ± 0.002 °C (-5 to to 35 °C); ± 0.01 °C (35 °C to 45 °C) Optional Pressure ± 0.1% of full scale range Dissolved Oxygen larger of ± 3 µmol/kg (0.07 ml/L, 0.1 mg/L) or ± 2% pH ± 0.05 pH	Conductivity 0.00001 S/m (0.0001 mS/cm) Temperature 0.0001 °C Optional Pressure 0.002% of full scale range Dissolved Oxygen 0.2 µmol/kg pH 0.004 pH	50 m	5 minutes to 24 hours

Discover our most trusted oceanographic and freshwater instruments, designed for accuracy and durability. Explore top-performing models that meet diverse research and monitoring needs worldwide.

SBE 37 MicroCAT

The SBE 37 MicroCAT is a high-accuracy conductivity and temperature (pressure optional) recorder...

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SBE 39plus Temperature Recorder

The SBE 39plus is a high-accuracy, fast-sampling temperature (pressure optional) recorder with USB...

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Deep SeapHOx™ V2 pH Sensor

The Deep SeapHOx™ V2 combines the SeaFET™ V2 pH sensor with the SBE 37 MicroCAT CTD sensor. The...

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