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Optical Oxygen Gas Sensor

FDO2-G2

  • Factory calibrated, maintenance free
  • High accuracy, low drift
  • Long life, non-depleting
  • Fast response (t63 < 2s)
  • Low power consumption

Optical Oxygen Gas Sensor - FDO2-G2

The Next Generation Oxygen Gas Sensor

Patents: US 10,495,619 / DE 10 2016 114 918 / EP 3 282 244

The FDO2-G2 oxygen sensor is a factory calibrated, robust, accurate, fast response, long lasting and almost maintenance free oxygen sensor for demanding gas sensing applications, e.g. for oxygen gas monitoring in glove boxes, portable equipment, exhaust gases, Mars rovers and more. It is backward compatible to its successful predecessor FDO2, but comes with improved sensor performance when exposed to elevated temperatures. Although the form factor is similar to conventional electro-galvanic oxygen sensors (oxygen fuel cells), the sensor operates on a completely different, an optical principle. The optical measurement is based on a proprietary luminescent sensor dye from PyroScience, which is sensitive to oxygen partial pressure. This principle is very robust and shows virtually no interferences to other relevant gases. It does not deplete over time, unlike electro-galvanic oxygen sensors with their very limited shelf and operation life. Optics and electronics are hermetically sealed from the measured gas and the sensing surface is highly hydrophobic, so water droplets do not disturb the measurement. The oxygen measurement is fully temperature compensated (patent-registered).

The flow-through cell FDO2-FTC enables simple integration in a variety of gas-streams. For evaluation purposes, the USB interface cable FDO2-USB is available together with a versatile evaluation software (more details under Accessories).

Outstanding Features

  • factory calibration
  • fast response time (t63 <2 sec)
  • low drift (typ. < 1% O2/year at 21% O2)
  • long life (> 5 years)
  • simple 1-point user calibration (e.g. at air)
  • wide measuring range (0 -1000 hPa pO2, up to 2000 pO2 on request)
  • standard form factor (M16x1, Ø=28 mm)
  • ease of use (digital output of partial pressure oxygen)
  • integrated ambient air pressure sensor can be used for calculating %O2
  • reliability (e.g. tested and integrated by NASA in Mars Rover 2020)
  • highly hydrophobic sensing surface (water droplets do not disturb the measurement)
  • full RoHS (lead/Pb free) compliancy and REACH compliancy
  • simple communication interface (UART, command or broadcast mode)
  • low energy consumption (3.3V, typ. 8mA)
  • linearity over the full oxygen range and sensor lifetime

Common Applications

  • Monitoring of oxygen concentration
  • Incubators
  • Oxygen concentrators
  • Inert gas processing chambers (glove boxes)
  • Exhaust gas measurement
  • Inert gas monitoring
  • Portable equipment
  • Monitoring fruit ripening and transport
  • Biogas applications
  • Oxygen level monitoring in buildings

Everything needed for testing

FDO2-G2-KIT

Includes everything needed for testing:

  • Oxygen gas sensor FDO2-G2
  • Flow-through cell FDO2-FTC
  • USB interface cable
  • Free software licence

Exemplary Setup

FDO2-EXT + FDO2-G2

Extend the FDO2-G2 oxygen sensor with the Modbus analog out module FDO2-EXT. This way a Modbus interface and analog outputs of the sensor reading can be utilized.

USB Interface Cable

FDO2-USB

USB interface cable for evaluation of FDO2-G2, incl. versatile logger software for easy setup and calibration

Flow-Through Cell for FDO2-G2

FDO2-FTC

Additional flow through cell for the FDO2-G2 oxygen sensor

Modbus-AnalogOut-Module

FDO2-EXT

Modbus analog out module for the oxygen sensor FDO2-G2.

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