The Endress+Hauser COY31-Z is a high-performance dissolved oxygen sensor designed for precise and reliable measurement of oxygen levels in liquid environment.

This COY31-Z sensor provides accurate, real-time data to help optimize processes and maintain the desired oxygen levels in various water treatment and process control systems.

Measuring Range:

0–20 mg/L (Dissolved Oxygen)

0–100% saturation (Oxygen saturation)

Output Signal: 4–20 mA 

Operating Temperature: 0°C to +60°C

Pressure Range: Up to 6 bar (600 kPa)

pH Range: pH 2 to pH 12

Power Supply: Powered by Endress+Hauser transmitter

Response Time (T90): 30 sec to 1 min 

Housing: Stainless stee

Electrode Material: Gold cathode, Silver anode

Dimensions: 160 mm length x 30 mm diameter 

Weight: 0.5 kg

Environmental Specifications

Operating Temperature: 0°C to +60°C

Storage Temperature: -20°C to +70°C

Ingress Protection: IP65

The COY31-Z sensor is known for its high sensitivity, long-term stability, and robustness in challenging environments.

It offers various features for improved performance, including advanced signal processing, low maintenance requirements, and compatibility with a variety of Endress+Hauser analyzers and transmitters.

The COY31-Z dissolved oxygen sensor operates on the polarographic principle, providing continuous and real-time measurements of oxygen concentrations in liquids. It is suitable for both submersible and flow-through installations, making it versatile for diverse applications.

The sensor is designed to work efficiently in environments with varying temperature, pressure, and chemical composition.

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