Watch tutorials, webinars and informative videos about PreSens optical sensor systems.
Replacement Oxygen Sensor for OXYPro® WR / WRM
Oxygen Exchange Cap OEC-PSt7-YAU
The Oxygen Exchange Cap is made of stainless steel and has an integrated sensor type PSt7. The sensor has a maximum measurement range of 0 - 100 % O2, and a detection limit of 0.03 % O2. It stands steam sterilization and cleaning in place. The OEC-PSt7-YAU is available in different versions: USP Class VI compatible (YOP) for bioprocess monitoring, safe for food applications (CAF), or with a hydrophobic Teflon coating (PTFE) for measurements in aggressive environments. The OEC can be screwed to the top of the OXYPro® WR / WRM fitting. Exchange of a used sensor is made easy as sensor calibration can be done via one fast barcode scan.
- Maximum measurement range of 0 - 100 % O2
- Different versions: USP Class VI compatible, food applications, aggressive environments
- Stands SIP (max. + 140 °C, 1.5 atm) & CIP (2 % NaOH, + 80 °C)
- Easy exchange due to barcode calibration
- Pressure resistant
|*at 20 °C, 960 - 980 hPa; humidified gas mixture|
**after customized calibration
***determined changing from 20.9 % oxygen gas to nitrogen 5.0
****determined changing from air-saturated water to a freshly prepared 1 % sodium sulfite solution
|Measurement range*||Optimal: 0 - 50 % O2, 0 - 500 hPa, 0 - 22.5 mg/L|
Max.**: 0 - 100 % O2, 0 - 1000 hPa, 0 - 45.0 mg/L
|Limit of detection*||0.03 % O2, 0.3 hPa, 0.015 mg/L|
1 % O2 ± 0.02 % O2, 20.9 % O2 ± 0.1 % O2
|Response time (t90)|
< 10 sec.
< 30 sec.
< 15 sec.
< 40 sec.
< 85 sec.
< 100 sec.
|Compatibility||Aqueous solutions, ethanol, methanol|
|No cross-sensitivity to||pH 1 - 14, CO2, H2S, SO2, ionic species|
|Cross-sensitivity to||Chlorine gas|
Organic solvents such as pure acetone, toluene, chloroform or methylene chloride
|Steam sterilization (max. + 140 °C, 1.5 atm)||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 %|
Cleaning agents containing ClO2 at room temperature
|Calibration||Two-point calibration in oxygen-free (e. g. nitrogen 5.0, 1 % sodium sulfite solution) and air-saturated environment (20.9 % oxygen, air-saturated water)|
|Storage stability||5 years provided the sensor material is stored at room temperature in dry conditions and in the dark|
|Pressure resistance||10 mbar up to 12 bar|
|Temperature range operation||Optimal: 0 °C to + 50 °C |
Max.: - 40 °C to + 90 °C
|Temperature range storage|
Optimal: room temperature (+ 20 °C ± 5 °C)
|Variants||USP Class VI compatible||Safe for food applications||Hydrophobic Teflon coating|