Oxygen Analysis: R & D at Oxigraf Using Laser Spectroscopy Oxygen Sensors.

Laser Diode Oxygen Analysis
Research & Development

Oxigraf performs contract development for aerospace, combustion, telecommunications, and medical applications.

Oxigraf has been active in developing a variety of special projects for a variety of industries.

Headspace analysis for the food packaging and pharmaceutical industries for applications involving low valume analysis down to less than one milliliter

Sample conditioning of high temperature gases

Multi-point sampling to use a single oxygen analyzer to monitor up to six separate locations

Development of test systems for OBIGGS operation in modern commercial aviation environments

Low power sensors for battery operated applications

High sensitivity analyzers for oxygen concentrations below 100 ppm

Oxigraf performed an SBIR for the US Air Force to develop a portable and rugged laser diode oxygen sensor for monitoring aircrew oxygen concentrators.

The sensor measures oxygen (O2) concentrations from 21% to 100%. It operated quickly and accurately over an altitude range of 1000 to 70,000 feet (pressure range of about 120 to 5 kPascal or about 18 to 1 psig).

The sensor will alternatively display the partial pressure of oxygen.

The sensor was tested to measure over a temperature range from -50 deg C to 55 deg C with 0.5% accuracy and response time (10-90%) of 400 milliseconds at a flow rate of 50 ml/min.

The sensor was also shown to operate over a Mil Spec vibration schedule.

Power requirements are 28 volts, 25 watts at turn-on and 10 watts for operation.

When coupled with a notebook or palmtop computer, the system serves as an oxygen flight data recorder.

Potential applications include monitoring On-board Oxygen Generation Systems (OBOGS), field portable oxygen generation systems, and fuel tank inert gas generators.

In another project, Oxigraf performed manufacturability engineering, contract manufacturing, and product service for a manufacturer of cardio-pulmonary gas exchange analyzers. Laser diode oxygen sensors were qualified, replacing a paramagnetic sensor and providing faster rise times and less sensitivity to vibration. A controller board was designed incorporating all gas, pressure, and temperature sensors together with control firmware. The analyzer and software were qualified to UL, CSA, and CE standards.

Oxigraf offers to apply its unique, patented, and low cost laser diode technology to your oxygen analysis needs in medical, combustion, chemistry, telecomm, and air quality applications.

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