Pure Water Optical Dissolved Oxygen Sensor

Pure water optical dissolved oxygen sensor designed specifically for demanding power plant and microelectronics applications

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Fast Response, Reduced Maintenance

METTLER TOLEDO Thornton's Pure Water Optical Dissolved Oxygen Sensor with ISM has been designed specifically for demanding power plant and microelectronics applications.

Low maintenance optical measurement technology provides exceptional measurement accuracy, stability, and speed of response.

Paired with the M800 multi-parameter transmitter, this system offers unequalled performance and reliability.


Power plant cycle chemistry monitoring
Generator stator cooling
Microelectronics ultrapure water
Pure water treatment systems
Features and Benefits
High accuracy, fast response, and increased stability in low ppb-level applications.
Low detection limit, minimal drift, and short response time improve oxygen monitoring.
33% faster response time over competitive models.
Proprietary OptoCap sensing element provides highly accurate measurement and easy maintenance without electrolyte handling.
OptoCap eliminates the need for polarization, increasing measuring system availability and reducing downtime.
ISM technology enables proactive maintenance with predictive diagnostic tools.
Operating range0 - 5000ppb
Accuracy2 % + 2 ppb
Response time98% of final value in < 20 s
Measuring temperature range10 – 50 °C (50 – 122 °F)
Environmental temperature range0 – 121 °C (32 – 250 °F)
Operating pressure0.2 – 12 bar (2.9 – 174 psi absolute)
Mechanical pressure resistanceMaximum 12 bar (174 psi absolute)
Segment /ApplicationThe most demanding low ppb power and
microelectronics pure water applications
Detection limit.8ppb

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“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.


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