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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)
- 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
Process Control in Biotech & Pharma
The OIMs, the oxygen probes for in-line measurement, are designed for harsh conditions like high pressure or oil/water mixtures. 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.
|Specifications||Gaseous & Dissolved O2||Dissolved O2|
|*after two-point calibration as described in the manual|
|Measurement range|| |
0 – 5 % O20 – 41.4 hPa
0 – 2 mg/L0 – 56.9 µmol/L
|Limit of detection||0.002 % oxygen|
± 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.|
|Compatibility||Aqueous solutions, ethanol, methanol|
pH 1 – 14
|Cross-sensitivity||Organic solvents, such as acetone, toluene, chloroform or methylene chloride|
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||24 months provided the sensor material is stored in the dark|
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