Precise DO Measurement,
Less Frequent Calibration
Hamilton extensively investigated the effects of the bioprocess on measurement accuracy. Analysis of sensor aging, chemical attack, and physical damage yielded the necessary understanding for development of a next generation VisiFerm which reduces the need for frequent calibration.
Learn the Sources of DO Measurement Error
Get Hamilton's whitepaper on potential sources of optical dissolved oxygen measurement error and ways to mitigate the impact.
Brochure - VisiFerm mA Dissolved Oxygen Sensors
Manual - VisiFerm mA SensorsManual for Visiferm mA Dissolved Oxygen Sensors
Programmer Manual - VisiTrace mAProgrammer Manual - VisiTrace mA
Programmers Manual - VisiFerm mA HARTThis document describes in detail the VisiFerm mA HART Field Device Specifications. It is addressed to software programmers.
Where can I get the HART EDD files for Hamilton products?
What is the expected lifetime and when should I replace my ODO cap?ODO cap health is process specific, with a cap quality indicator in ArcAir representing the general health of the ODO cap. ODO cap quality replacement is advised at 35%, however, some customers may replace ODO caps as part of a preventative maintenance program before reaching 35%. Click to learn more.
Can I use a VisiFerm, VisiPro, or VisiTrace for gas phase oxygen measurements?Yes. Optical DO sensors can be used for monitoring oxygen contents in air as well as dissolved oxygen.
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.
Best Practices: Zero Point Oxygen Calibration
Firmware Updates for Arc ProductsHamilton Arc and VisiFerm ECS sensors rely upon internal firmware for their operation. Periodic firmware updates ensure that the sensor has the latest features and fixes any pre-existing bugs that may exist.
Comparing Optical To Polarographic Dissolved Oxygen MeasurementThere is a clear trend in the market towards replacing polarographic with optical dissolved oxygen. When evaluating the switch to optical, engineers must consider if there will be any impact on the current process due to the change in measurement principle.
Optical Dissolved Oxygen Sensor CapsThere are several different options for optical dissolved oxygen (ODO) caps. This article provides recommendations for each product.
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