CS511-L Dissolved Oxygen Sensor

The CS511, manufactured by Sensorex, is a submersible, rugged, low-maintenance sensor that senses dissolved oxygen in a medium (typically water). It consists of a self-polarizing galvanic ce

  • Product Name:Dissolved Oxygen Sensor
  • Model:CS511-L
  • Maunufactor:Campbell
  • Country:USA

The CS511, manufactured by Sensorex, is a submersible, rugged, low-maintenance sensor that senses dissolved oxygen in a medium (typically water). It consists of a self-polarizing galvanic cell that generates a millivolt signal proportional to the amount of oxygen present in the measured medium (typically water).

Benefits and Features

  • In-line thermistor provides automatic temperature compensation

  • Compatible with most Campbell Scientific dataloggers


Operating Temperature Range0° to 50°C
Measurement Range0.5 to 50 ppm (for O2)
Accuracy±2%
Output33 mV ± 9 mV (100% saturation); < 2 mV (0% saturation)
Response Time5 min from 100% to 0% oxygen
Minimum Water Velocity5 cm s-1 (2 in. s-1) across membrane
Minimum Submersion Depth6.35 cm (2.5 in.)
Pressure0 to 100 psig
Temperature CompensationAutomatic from 4° to 40°C
Probe ElectrolyteNaCl + glycerol (prevents freezing)
Diameter5.72 cm (2.25 in.)
Height17.78 cm (7 in.) from bottom of sensor to end of cable strain relief
Shipping Weight0.8 kg (1.75 lb) including sensor and shipping kit