Ocean Optics Introduces Handheld Oxygen Sensor System

Dunedin, Fla., March 2004 -- Now available from Ocean Optics is the FOXY-LITE, an easy-to-use handheld oxygen sensor that uses time-resolved fluorometry and sol-gel based optical sensing technology to calculate oxygen concentration in a sample with a response time of less than one second. The FOXY-LITE can be used in a variety of applications including packaging and fuel tank headspace analysis, dissolved O2 monitoring, and O2 detection in biological samples such as blood and tissue. Additionally, the FOXY-LITE system is ideal for long-term measurements including environmental monitoring and cell culturing applications.

Available for $1,999, the FOXY-LITE includes a Ocean Optics FOXY-R, a 1000 µm stainless steel oxygen sensor probe with a transducer material – a proprietary fluorescent ruthenium complex immobilized in a submicron-thin sol-gel matrix – at the probe’s tip. The sampling probe couples to the FOXY-LITE via a 600 µm bifurcated optical fiber terminated with an SMA 905 Connector. The FOXY-LITE operates with any Ocean Optics 1000 µm FOXY Sensor Probe.

The FOXY-LITE features an easy-to-read LCD display that can show a strip chart with oxygen values plotted over time. Oxygen levels may be displayed in ppm or in % values, or customized in user-defined units. Temperature readings can be displayed in Fahrenheit or Celsius values when the FOXY-LITE is used with an Ocean Optics RTD probe.

The FOXY-LITE’s onboard blue (470 nm) pulsed LED light source excites an analyte while its specially filtered single-element detector captures the sample’s fluorescence decay at 600 nm to determine oxygen levels. This time-resolved fluorescence method makes the FOXY-LITE less sensitive to effects from ambient light and photobleaching while extending the life of the unit’s calibration settings.

The FOXY-LITE can be interfaced to a PC via a USB connector or an RS-232 serial port. Optional PC-based software is available to analyze and log data. Additionally, overlimit/underlimit indicators, such as temperature alarms, can be set via TTL signals that are accessible in the FOXY-LITE.

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