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Sensor Cap for Air Bubble Reduction on OIM and OXYPro® TR / TRM

Oxygen Exchange Cap OEC30-PSt6-YAU

The Oxygen Exchange Cap OEC30 with integrated sensor type PSt6 is made of stainless steel and can be screwed to the top of an OIM or OXYPro® TR / TRM. Its beveled tip reduces air bubble formation during dissolved oxygen measurements. The OEC30-PSt6-YAU is available in different versions: safe for food application (CAF) or with a hydrophobic Teflon coating (PTFE) for measurements in aggressive environments. The PSt6 sensor has a maximum measurement range of 0 - 10 % oxygen, with a detection limit of 0.002 % O2 / 1 ppb. The OEC30-PSt6-YAU stands steam sterilization and cleaning in place.

  • Maximum measurement range of 0 - 10 % O2
  • Reduced air bubble formation
  • Different versions: food applications, aggressive environments
  • Easy exchange due to barcode calibration
  • Stands SIP (recommended: + 121 °C, 30 min) & CIP (+ 80 °C, 2 % NaOH)
  • Pressure resistant
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Technical

Specifications OEC30-PSt6-YAU-YOP OEC30-PSt6-YAU-CAF OEC30-PSt6-YAU-PTFE
*at 20 °C, 960 - 980 hPa; humidified gas mixture
**after customized calibration
***determined changing from 10 % oxygen gas to nitrogen 5.0
****determined changing from air-saturated water to a freshly prepared 1 % sodium sulfite solution
Measurement range* Optimal: 0 - 5 % O2, 0 - 50 hPa, 0 - 2.0 mg/L
Max.**: 0 - 10 % O2, 0 - 100 hPa, 0 - 4.5 mg/L
Limit of detection* 0.002 % O2, 0.02 hPa, 1 ppb
Resolution* 0.002 % O2 ± 0.0006 % O2, 0.046 % O2 ± 0.0008 % O2, 0.2 % O2 ± 0.001 % O2
1 ppb ± 0.3 ppb, 20 ppb ± 0.4 ppb, 100 ppb ± 0.5 ppb
Response time (t90)
Gaseous O2***
Dissolved O2****

< 10 sec.
< 30 sec.

< 15 sec.
< 40 sec.

< 85 sec.
< 100 sec.
Properties      
Compatibility Aqueous solutions
No cross-sensitivity to pH 1 - 14, CO2, SO2, ionic species
Cross-sensitivity to Chlorine gas
Organic solvents such as pure acetone, toluene, chloroform or methylene chloride
Steam sterilization (recommended: + 121 °C, 30 min) Yes Yes Yes
Cleaning in place (CIP)
(+ 80 °C, 2 % NaOH)
Yes Yes Yes
Cleaning procedure 3 % H2O2, acidic agents (HCl, H2SO4) max. 4 - 5 %
Ethanol, methanol, cleaning agents at room temperature
Calibration Two-point calibration in oxygen-free environment (e. g. nitrogen 5.0, 1 % sodium sulfite solution) and a second calibration medium between 1 and 2 % oxygen
Storage stability 5 years provided the sensor material is stored at room temperature in dry conditions and in the dark
Pressure resistance* - 1 bar to + 12 bar
Temperature range operation Optimal: 0 °C to + 50 °C
Max.: - 10 °C to + 90 °C
Storage conditions Optimal: room temperature (20 °C ± 5  °C)
Max.: 0 °C to + 70 °C, 80 % rel. humidity
Variants - Safe for food applications Hydrophobic Teflon coating

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