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O2 Sensor - Dissolved & Gas Phase
Accurate Oxygen Monitoring for Process Control and Safety
An O2 sensor is an analytical instrument used for accurate, reliable oxygen monitoring in industrial processes. O2 sensors can measure dissolved oxygen or gas phase oxygen. Optical and polarographic O2 sensors provide fast and accurate measurement of dissolved oxygen in pharmaceutical, chemical and water monitoring processes. For measuring in a continuous gas stream, oxygen sensors with TDL technology (TDL Gas Analyzers) or with amperometric technology provide reliable, in situ O2 measurements.
Useful Related Links
METTLER TOLEDO Dissolved Oxygen Theory Guide
Oxygen measurement and control plays an important role in countless processes across the chemical, pharmaceutical, biotechnology, power, and food & beverage industries. Dependable in-line measurement of O2 in liquid and gaseous mixtures is vital for providing continuous, real-time data on oxygen levels. Read more
Tunable Diode Laser Spectroscopy - Theory & Background
Since their first use in the 1990s, Tunable Diode Laser gas analyzers have seen rapid growth in industry due to their exceptional performance and reliability. Today, TDL spectroscopy continues to make technical advances, making this class of sensor the preferred choice by many chemical and petrochemical companies. Read more
Accuracy Guide: Hints & Tips to Improve Accuracy of DO & pH Sensors
High quality and efficacy of products and efficiency in production are the main goals in pharmaceutical manufacturing. To achieve these aims, production processes must be stable, predictable and operate consistently at the target level of performance. Read more
Dissolved Oxygen Measurement for Cell Culture and Fermentation
Dissolved oxygen measurement is essential in fermentation and cell culture for ensuring conditions remain optimal for cells. As explained in the white paper, low dissolved oxygen levels in fermenters/bioreactors can impact growth rate, nutrients uptake, cellular morphology and metabolite synthesis; leading to reduced yield and lower end-product quality. Read more
Good Operating Procedures for Optical O2 Sensors
You will find detailed information about the operating principles of optical dissolved oxygen sensors along with field-tested best practice recommendations for applying this sensing technology in your applications. Read more
Corrosion Reduction with pH & O2 Control
Corrosion and fouling have a huge economic impact on operations in the chemical industry. Continuous control of process pH and dissolved oxygen (DO) are of great help, but can be difficult to achieve if sensors are not sufficiently robust. Read more
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FAQs
What is an O2 sensor?
An O2 sensor is an analytical instrument used for accurate, reliable oxygen monitoring in industrial processes. There are various different types and technologies of O2 sensors that are produced by METTLER TOLEDO, including optical dissolved O2 sensors, polarographic dissolved O2 sensors, tunable diode laser analyzers and amperometric gas phase O2 sensors.
Why are O2 sensors used?
O2 sensors provide a critical oxygen measurement in pharmaceutical manufacturing, brewing operations, corrosion prevention, water monitoring and explosion prevention.
When should an oxygen sensor be replaced?
In general, oxygen sensors need to be replaced at different rates based on their usage and their technology. Some systems, like a TDL O2 sensor, are capital investments that don’t require replacement for many years. Others, like polarographic and optical O2 sensors, need to have select consumables replaced on a regular basis to ensure accurate operation. METTLER TOLEDO O2 sensors with Intelligent Sensor Management (ISM) technology provide predictive diagnostics, including a Dynamic Lifetime Indicator, that help you plan for maintenance and replacement of your oxygen sensor.
What models of O2 sensor does METTLER TOLEDO produce?
METTLER TOLEDO produces a wide range of O2 sensors for industrial process manufacturing. These O2 sensors include:
- InPro 6860 series of optical O2 sensors for biopharma, including the InPro 6860i HD anti-bubble O2 sensor.
- InPro 6960i and InPro 6970i O2 sensors for trace measurements on brewing lines.
- The GPro 500 Tunable Diode Laser gas analyzer, which acts as an in situ oxygen sensor in process gas measurements.