Robust Probe for Measurement of Smallest Oxygen Traces

Oxygen Dipping Probe DP-PSt9

This oxygen dipping probe is used to measure ultra-low oxygen traces in gasses. It is made of a polymer optical fiber with the oxygen-sensitive sensor attached to one end. In order to protect both – the fiber and the sensor – the fiber end is covered with a high grade steel tube. The dipping probe has an outer diameter of 4 mm and a length of 10 cm. Other lengths are available on request.

  • Excellent long-term stability
  • Pressure resistant (max. 5 bar)
  • Polarization-free
  • No membrane clenaing and replacement necessary
  • No electrolyte solution to replenish
  • Long shelf life
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SpecificationsGaseous O2
*after two-point calibration as described in the manual
Measurement range0 - 200 ppmv oxygen
Limit of detection0.5 ppmv oxygen
Resolution10 ± 0.5 ppmv oxygen
100 ± 0.8 ppmv oxygen
200 ± 1.5 ppmv oxygen
Accuracy at + 20 °C*± 2 ppmv oxygen or ± 5 %, whichever is higher
Measurement temperature rangefrom 0 °C to + 40 °C
Response time (t90)< 3 sec.
CompatibilityGas phase only
No cross-sensitivityCO2, SO2
Cross-sensitivityOrganic vapor, Chlorine gas
CalibrationTwo-point calibration with oxygen-free environment (nitrogen 6.0) and a second calibration value optimally between 100 and 200 ppmv gaseous oxygen
Storage stability24 months provided the sensor material is stored in the dark at room temperature

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