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Steel Probe for Monitoring Oxygen Traces in Processes
Oxygen Probe for In-Line Measurement OIM-PSt6
The OIM-PSt6 has a stainless steel fitting with standardized length and thread, so it is compatible with most bioreactors and port adapters. The optical trace oxygen sensor has a measurement range of 0 - 5 % oxygen and a detection limit of 1 ppb. It is integrated in an Optical Exchange Window, which is screwed to the top of the metal fitting and can be replaced if needed. The probe has excellent long-term stability and can be equipped with a customized fitting for e. g. sight glasses.
- Stands autoclaving, SIP (+ 130 °C, 1.5 atm) & CIP (2 % NaOH, + 80 °C)
- Polarization-free
- No membrane cleaning and replacement necessary
- No electrolyte solutions to replenish
- Pressure resistant
- Measurement in steel fermenters
- Trace oxygen measurements in brewing and beverage industries
Applications
Process Control in Biotech & Pharma
The OIMs, the oxygen probes for in-line measurement, are designed for harsh measurement conditions. These systems give high accuracy and are almost maintenance-free as they do not contain any membranes and electrolytes. The sensors are fully autoclavable and sterilizable (CIP & SIP).
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 |
---|---|---|
*after two-point calibration as described in the manual | ||
Measurement range | 0 – 5 % O2 0 – 41.4 hPa | 0 – 2 mg/L 0 – 56.9 µmol/L |
Limit of detection | 0.002 % oxygen | 1 ppb |
Resolution | ± 0.0007 % O2 at 0.002 % O2 | ± 0.0003 mg/L at 0.001 mg/L |
Accuracy* | ± 1 ppb or ± 3 % of the respective concentration; whichever is higher | |
Drift at 0 % oxygen | < 2 ppb within 30 days (sampling interval of 1 min.) | |
Measurement temperature range | from 0 °C to + 50 °C | |
Response time (t90) | < 6 sec. | < 40 sec. |
Properties | ||
Compatibility | Aqueous solutions, ethanol, methanol | |
No cross-sensitivity | pH 1 – 14 | |
Cross-sensitivity | Organic solvents, such as acetone, toluene, chloroform or methylene chloride Chlorine gas | |
Sterilization procedure | Steam sterilization | |
Cleaning procedure | Cleaning in place (CIP, 2 % NaOH, + 80 °C, + 176 °F) | |
Calibration | Two-point calibration with oxygen-free environment (nitrogen, sodium sulfite) and a second calibration value optimally between 1 % and 2 % oxygen | |
Storage stability | 60 months provided the sensor material is stored in the dark |
Related products
Resources
FAQs
Manuals
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Software
PreSens Datamanager version 2.0.0.57 - Windows XP/Vista/7/8
PreSens Oxygen Calculator version 3.1.1 - Windows 7/8/10