Pure Water Optical DO sensor

Fast Response, Reduced Maintenance. The METTLER TOLEDO Pure Water Optical DO Sensor with Intelligent Sensor Management (ISM) technology provides high accuracy, fast response, and stability in demanding low ppb-level dissolved oxygen measurement applications.

Outstanding Performance at Low ppb-Level

The Pure Water Optical DO sensor offers outstanding measurement performance with a low detection limit for low ppb-level ultrapure water applications.

Easy and Fast Maintenance

The OptoCap™ oxygen-sensing element delivers convenience with easy maintenance, eliminating liquid handling and time-consuming sensor polarization.

Minimum Drift and Short Response Time

The minimum drift and short response time of the Pure Water Optical DO probe offer improved oxygen monitoring.

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Specifications – Sensor PureWater ISM Optical DO
Measurement ParameterOxygen
Accuracy± 2% of reading or 2ppb, whichever is greater
Response Time98% of final value in <20s
Sample RateAdjustable between 1 and 60 seconds
ISM (Digital) or AnalogISM (Digital)
Operating Temperature (Celsius)0 to 121°C
Operating Temperature (Fahrenheit)32 to 250°F
Operating Pressure (Bar)0.2 – 12 bar
Operating Pressure (PSI)2.9 – 174 psi absolute
Measuring Temperature Range (Celsius)0 – 50 °C
Measuring Temperature Range (Fahrenheit)32 – 122 °F
Process Connection¼” NPT(F)
Sensor Length120 mm
O-Ring MaterialEPDM (FDA-positive listed)
Membrane MaterialSilicone
Cable Connector5-pin
Other certificatesCE
Hazardous Area ApprovalsNo
Primary Media/ApplicationSemiconductor Water; Power Plant Water/Steam
Hygienic/Biocompatibility ApprovalsNo
Wetted MaterialsStainless steel, silicone, EPDM O-ring
Measurement Range0-5000 ppb
Measurement TechnologyOptical fluorescence quenching
Temperature compensationAutomatic
Sensor Diameter12 mm
Mechanical Pressure Resistance (PSI)2.9 – 174 psi absolute
Model FamilyUPW DO sensors
Connector DesignStraight
Mechanical Pressure Resistance (Bar)Maximum 12 bar
Material Number(s)30041040


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