Dependable dissolved oxygen sensors for process control

M4 Knick dissolved oxygen sensors provide accurate, long-term measurements for biological, industrial, and water-treatment processes. Designed for low maintenance and enhanced by Memosens digital technology, they help improve process efficiency while minimizing sensor downtime.


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Oxygen 
Sensors 
Ex Approvals
CIP/SIP Capable
Measurement Type
SE715 Memosens Oxygen Sensor

SE715

Oxygen Sensor for Water and Wastewater
Temp: 23…113 °F
Pressure: 0…43 psig
Range: 0…20 mg/l
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Temp: 23…113 °F
Pressure: 0…43 psig
Range: 0…20 mg/l
Temp: 23…113 °F
Pressure: 0…43 psig
Range: 0…20 mg/l
SE 740 Optical Oxygen Sensor

SE740

Low Maintenance Optical Oxygen Sensor
Temp: 14…284 °F
Pressure: -14.5…174 psig
Range: 4 μg/l…25 mg/l, 0.05…300% saturation
Learn More
Temp: 14…284 °F
Pressure: -14.5…174 psig
Range: 4 μg/l…25 mg/l, 0.05…300% saturation
Temp: 14…284 °F
Pressure: -14.5…174 psig
Range: 4 μg/l…25 mg/l, 0.05…300% saturation
SE 707 Trace Oxygen Sensor

SE706

Hygienic Oxygen Sensor
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 6 μg/l…50 mg/l
Learn More
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 6 μg/l…50 mg/l
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 6 μg/l…50 mg/l
SE707 Trace Oxygen Sensor

SE707

High-Resolution Trace Oxygen Sensor
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 1 μg/l…50 mg/l
Learn More
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 1 μg/l…50 mg/l
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 1 μg/l…50 mg/l
Oxygen 
Sensors 
SE715 Memosens Oxygen Sensor

SE715

Oxygen Sensor for Water and Wastewater
Temp: 23…113 °F
Pressure: 0…43 psig
Range: 0…20 mg/l
Learn More
Temp: 23…113 °F
Pressure: 0…43 psig
Range: 0…20 mg/l
Temp: 23…113 °F
Pressure: 0…43 psig
Range: 0…20 mg/l
SE 740 Optical Oxygen Sensor

SE740

Low Maintenance Optical Oxygen Sensor
Temp: 14…284 °F
Pressure: -14.5…174 psig
Range: 4 μg/l…25 mg/l, 0.05…300% saturation
Learn More
Temp: 14…284 °F
Pressure: -14.5…174 psig
Range: 4 μg/l…25 mg/l, 0.05…300% saturation
Temp: 14…284 °F
Pressure: -14.5…174 psig
Range: 4 μg/l…25 mg/l, 0.05…300% saturation
SE 707 Trace Oxygen Sensor

SE706

Hygienic Oxygen Sensor
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 6 μg/l…50 mg/l
Learn More
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 6 μg/l…50 mg/l
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 6 μg/l…50 mg/l
SE707 Trace Oxygen Sensor

SE707

High-Resolution Trace Oxygen Sensor
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 1 μg/l…50 mg/l
Learn More
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 1 μg/l…50 mg/l
Temp: 23…176 °F
Pressure: 2.9…87 psia
Range: 1 μg/l…50 mg/l

Dissolved oxygen measurement you can rely on

M4 Knick dissolved oxygen sensors deliver accurate, stable measurements critical for biological processes, aeration control, and water quality monitoring. They are designed to perform consistently in both clean and demanding applications.

  • Optimized for low maintenance and long service life
  • Digital intelligence with Memosens
  • Process-ready solutions backed by expertise


ELL: Ready-to-Install pH Loop for Basic Applications

The ELL is a complete, preassembled digital pH measurement system designed for simple water and municipal processes. It includes a reliable Memosens sensor, a static holder, and an optional transmitter. The ELL is stocked in the US for quick shipment to keep your operations moving.

Dissolved Oxygen Resources

Why Dissolved Oxygen Matters

Monitoring DO values is an essential aspect of both industrial processes and ecological moderation. Let's look at the roll DO plays in both the process industry, and environmental sustainability.

How Does an Oxygen Sensor Work?

Oxygen sensors are essential to various industrial applications for quality monitoring, process control, and environmental compliance.