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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
Technical
| Specifications | OEC30-PSt6-NAU-OIW |
|---|---|
| *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**** | < 4 sec. < 4 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 |
| 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 |
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