Alpha Omega Instruments

• Data Sheet

Trace and Percent Oxygen Sensors measure the concentration of oxygen in a gas mixture. Sensors are the core components (of a transmitter) that detect and measure oxygen levels in gases. They rely on specific sensing technologies like electrochemical, zirconia, or optical methods to produce a raw signal based on the oxygen concentration.

• Trace Oxygen Sensors are designed to measure very low concentrations of oxygen, typically in the parts per million (ppm) or even parts per billion (ppb) range.
• Percent Oxygen Sensors, on the other hand, are used to measure higher concentrations of oxygen, typically in the range of 0-100%.

Trace and Percent Oxygen Transmitters: Transmitters are complete devices that incorporate oxygen sensors but also include additional electronics for signal processing, calibration, and communication. They convert the sensor’s raw signal into a usable output (e.g., 4–20 mA, digital signals) for integration with monitoring or control systems. Alpha Omega Instruments Trace and Percent Oxygen Transmitters feature a long-life ambient temperature electrochemical sensor that has a functional life of up to three times that of most “fuel cell” type sensors. The enhanced mechanical design of the sensor ensures longer life, and virtually eliminates leakage of caustic electrolyte, a nagging (and expensive) problem associated with sensors that require periodic electrolyte maintenance. And, because the sensor is sealed, it is not position sensitive. In addition, unlike some electrochemical sensors, the readings do not require manual adjustment based on changes in the molecular weights of the sample gas i.e. helium, hydrogen, etc. This is a major advantage for continuous measuring applications. The output from the sensor is both linear and temperature compensated to provide optimum performance.

Trace and Percent Oxygen Analyzers: Analyzers are more comprehensive instruments that generally include an oxygen sensor, a display for reading the measurements, and advanced features like data logging, alarms, and user interfaces. They are standalone devices used to analyze and display oxygen levels directly. In essence, transmitters are meant for integration into larger systems, while analyzers are self-contained tools for direct analysis.

Portable Oxygen Analyzers are compact, handheld devices used to measure oxygen concentrations in gases for on-the-go applications. They are commonly used in industries like healthcare, aviation, and industrial processes, offering convenience, quick readings, and reliable results in diverse environments.