Watch tutorials, webinars and informative videos about PreSens optical sensor systems.
Wide Range Oxygen Measurements with Metal Flow-Through Cells
Oxygen Exchange Cap OEC-M10-PSt3
This Oxygen Exchange Cap carries a PSt3 oxygen sensor with a maximum measurement range of 0 - 100 % O2 and a limit of detection of 0.03 % O2. With its M10 thread, it can be screwed into a metal flow-through cell FTM-M10. This way a used sensor coating in your flow-through cell can easily be replaced. A polymer optical fiber with protective metal spiral tube cover can be attached magnetically to this OEC. The oxygen sensor is very robust and stands CIP (Cleaning in place, + 80 °C and 2 % NaOH) or even steam sterilization (+ 130 °C, 1.5 atm).
- Replacement sensor for FTM-M10
- Measure oxygen in pipes
- Max. measurement range 0 - 100 % O2, limit of detection 0.03 % O2
- Signal independent of flow velocity
- Autoclavable, SIP (+ 130 °C, 1.5 atm) & CIP (+ 80 °C, 2 % NaOH)
Applications
In-line Oxygen Measurement in Brewing and Beverage Industry
Even low concentrations of oxygen influence shelf-life and the taste of certain beverages. Due to the extraordinary low detection limit and outstanding accuracy of PreSens trace oxygen sensors, the quality of oxygen-sensitive products such as beer, wine and soft drinks is secured.
The optical sensors have – compared to standard electrodes – a very fast response time and they are very easy to maintain.
Technical
| Specifications | Gaseous & Dissolved O2 | Dissolved O2 | |||||
|---|---|---|---|---|---|---|---|
| *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 Max.**: 0 - 100 % O2, 0 - 1000 hPa | Optimal: 0 - 22.5 mg/L Max.**: 0 - 45.0 mg/L | |||||
| Limit of detection* | 0.03 % O2 | 0.020 mg/L | |||||
| Resolution* | 1 % O2 ± 0.02 % O2 20.9 % O2 ± 0.1 % O2 50 % O2 ± 0.4 % O2 | 0.4 mg/L ± 0.009 mg/L 9 mg/L ± 0.04 mg/L | |||||
| Response time (t90) | < 10 sec.*** | < 30 sec.**** | |||||
| Properties | |||||||
| Compatibility | Aqueous solutions, ethanol, methanol | ||||||
| No cross-sensitivity | pH 1 - 14, CO2, H2S, SO2, ionic species | ||||||
| Cross-sensitivity | Organic solvents such as pure acetone, toluene, chloroform or methylene chloride Chlorine gas | ||||||
| Sterilization procedure | Steam sterilization Ethylene oxide (EtO) Gamma irradiation | ||||||
| Cleaning procedure | Cleaning in place (CIP, 2 % NaOH, + 80 °C, + 176 °F) 3 % H2O2 Acidic agents (HCl, H2SO4), max. 4 % - 5 % | ||||||
| Calibration | Two-point calibration with oxygen-free environment (nitrogen, sodium sulfite) and air-saturated environment | ||||||
| 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) Max.: 0 °C to + 70 °C | ||||||
| Storage stability | 5 years provided the sensor material is stored at room temperature in dry conditions and in the dark | ||||||