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Air Bubble Reduction and Fast Response Time for OXYPro® TR / TRM
Oxygen Exchange Cap OEC30-PSt6-NAU
The Oxygen Exchange Cap OEC30 with integrated sensor type PSt6 is made of stainless steel and can be screwed to the top of an OXYPro® TR / TRM. Its beveled tip reduces air bubble formation on the sensor during dissolved oxygen measurements. This sensor cap is designed for applications were a very fast sensor response is needed. The PSt6 sensor has a maximum measurement range of 0 - 10 % oxygen, with a detection limit of 0.002 % O2 / 1 ppb. This cap is not autoclavable.
- Maximum measurement range of 0 - 10 % O2
- Fast response time (< 4 sec.)
- Reduced air bubble formation
- Easy exchange due to barcode calibration
- Pressure resistant
|*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) |
< 4 sec.
< 4 sec.
|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
|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 + 70 °C
|Storage conditions||Optimal: room temperature (+ 20 °C ± 5 °C) |
Max.: 0 °C to + 70 °C, 80 % rel. humidity