Technologie

Master your Oxygen!
TecSense uses opto-chemical sensor technology to determine gaseous ans dissolved Oxygen concentrations in very low concentrations  down to 4ppb (parts per billion). Opto-chemical sensors are extremly accurate, cover a wide range of applications and easy to maintain.

The optochemical oxygen measurment system offers outstanding features:

  • measuring range from 4 ppb up to saturation
  • minimal response time t90 o 250 ms
  • highest accuracy +-0,003 mg/l
  • maximal reproducibility of 99,99%
  • self diagnosis
  • self calibration applying coded sensor spot technology
  • temperature range from – 20 °C to +150°C
  • miniaturised, integrated measurement device
  • no cross sensitivity to CO2, SO2, ionic strength
  • CIP cleaning, SIP sterilization of the sensor
  • no constraints regarding installed location, material flow or pressure

The measurement principle is described here:

  • Detection of a sensitive spots luminescence after irradiation at a specific wave length
  • Luminescence quenching:
  • Oxygen acts as “Quencher”
  • Irradiation
  • Emission of fluorescence light (Stoke´s Shift)
  • Collision with quencher (e.g. Oxygen)
  • Oxygen absorbs the energie of the activated  dey molecule
  • Reduction of the emitted lights intensity
  • Reduction of life time of the activated luminophor
  • Phase shift between irradiation signal and emitted signal

opto-chemical oxygen determination

opto-chemical oxygen determination

 

 

 

 

 

 

measurement principle

measurement principle

 

 

 

 

 

 

For more scientific information, please check list of publications.

The principle for Standard Test Method for Oxygen Headspace Analysis of Packages Using Fluorescent Decay is specified in the Standard ASTM F2714 − 08 (Reapproved 2013).