Oxysens Dissolved Oxygen Sensors
The Oxysens is an electrochemical dissolved oxygen sensor designed for applications in water, e.g. wastewater treatment, swimming pools or fish farms. It is easy to maintain, because the membrane and the electrolyte do not need to be replaced.
The response time of the Oxysens is fast, it is almost independent to flow and insensitive to soiling.
Resources
Hamilton's knowledge base provides a range of explanatory articles, frequently asked questions, and document downloads.
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Material Specification - O-ring EPDM
Material specification of O-ring EPDM -
EU Declaration of Conformity - Analog Sensors and Armatures
EU Declaration of Conformity to the RoHS 2 directive 2011/65/EU and ATEX Directive 2014/34/EU. The declaration applies to the product families: pH sensors, dissolved oxygen sensors, conductivity sensors, armatures and fittings.
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Does temperature impact my oxygen measurement?
Yes, in a closed system, gas phase temperature is directly proportional to pressure and therefore measured oxygen content. In solution, temperature is inversely proportional to dissolved oxygen content. -
When should I calibrate my DO sensor?
The frequency of calibration will depend upon the duration of process runs and the accuracy required for process control. In bioreactor applications calibration can be performed before sterilization; however many customers choose to calibrate after sterilization as well. -
When should I replace the membrane and electrolyte in my polarographic DO sensor?
The frequency of membrane and electrolyte replacement is process specific and will vary. Routine calibration before each run can identify a high nA current at the nitrogen zero point or low nA current in air, indicating a need to replace the membrane and electrolyte. Click to learn more about membrane replacement.
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Best Practices: Zero Point Oxygen Calibration
There are several methods to achieving a good zero point calibration of optical and polarographic DO sensors. This paper looks at each procedure in depth. -
Documentation and Certificates for Sensors and Liquid Solutions
What documentation and certificates can I expect with my sensor or probe? This article provides examples of the types of paper documents that normally come with Hamilton products.
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