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CS511-L Dissolved Oxygen Sensor

Updated:2025-03-13

Brand: Campbell
Model: CS511-L
Description: 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 ge
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Product Details

CS511-L Dissolved Oxygen Sensor Description：

Product Manual Datasheet

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).

Detailed Description

Oxygen diffuses through the CS511’s membrane onto a cathode that produces a chemical reaction. An electrical current is produced by this reaction, which is converted from microamps to millivolts by an in-line resistor. An in-line thermistor provides automatic temperature compensation.

Benefits and Features

In-line thermistor provides automatic temperature compensation

Compatible with most Campbell Scientific dataloggers

CS511-L Dissolved Oxygen Sensor Specification：

Operating Temperature Range	0° to 50°C
Measurement Range	0.5 to 50 ppm (for O₂)
Accuracy	±2%
Output	33 mV ± 9 mV (100% saturation); < 2 mV (0% saturation)
Response Time	5 min from 100% to 0% oxygen
Minimum Water Velocity	5 cm s^-1 (2 in. s^-1) across membrane
Minimum Submersion Depth	6.35 cm (2.5 in.)
Pressure	0 to 100 psig
Temperature Compensation	Automatic from 4° to 40°C
Probe Electrolyte	NaCl + glycerol (prevents freezing)
Diameter	5.72 cm (2.25 in.)
Height	17.78 cm (7 in.) from bottom of sensor to end of cable strain relief
Shipping Weight	0.8 kg (1.75 lb) including sensor and shipping kit