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Perfusion Monitoring in Pipes

Oxygen Probe Integrated in Metal Flow-Through Connector FTM-PSt3

An oxygen exchange window is integrated in a metal flow-through connector. The FTM can be integrated in pipes with o.d. 6 mm or other diameters using the respective adapters. The oxygen probe is very robust and long-term stable. It can be cleaned by CIP (Cleaning in place 2 % NaOH, + 80 °C) and also stands steam sterilization (+ 130 °C, 1.5 atm).

  • Online oxygen measurement in perfusion systems
  • No consumption of oxygen
  • Signal independent of flow velocity
  • Autoclavable, SIP (+ 130 °C, 1.5 atm) & CIP (2 % NaOH, + 80 °C)
  • Polarization-free
  • Long-term stability

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

SpecificationsGaseous & Dissolved O2Dissolved O2
*after two-point calibration as described in the manual
Measurement range

0 – 100 % O2

0 – 1000 hPa

0 – 45 mg/L

0 – 1400 µmol/L
Limit of detection0.03 % oxygen15 ppb
Resolution

± 0.01 % O2 at 0.21 % O2
± 0.1 % O2 at 20.9 % O2
±0.1 hPa at 2 hPa

± 1 hPa at 207 hPa

± 0.004 mg/L at 0.091 mg/L
± 0.04 mg/L at 9.1 mg/L
± 0.14 µmol/L at 2.83 µmol/L

± 1.4 µmol/L at 283.1 µmol/L
Accuracy*± 0.4 % O2 at 20.9 % O2
± 0.05 % O2 at 0.2 % O2
Drift< 0.03 % O2 within 30 days (sampling interval of 1 min. / at 0% oxygen)
Measurement temperature rangefrom 0 to + 50 °C
Response time (t90)< 6 sec.< 40 sec.
Properties
CompatibilityAqueous solutions, ethanol, methanol
No cross-sensitivity

pH 1 – 14
CO2, H2S, SO2
Ionic species

Cross-sensitivityOrganic solvents, such as acetone, toluene, chloroform or methylene chloride
Chlorine gas
Sterilization procedure

Steam sterilization
Ethylene oxide (EtO)
Gamma irradiation

Cleaning procedureCleaning in place (CIP, 2 % NaOH, + 80 °C, + 176 °F)
3 % H2O2
Acidic agents (HCl, H2SO4), max. 4 – 5 %
CalibrationTwo-point calibration with oxygen-free environment (nitrogen, sodium sulfite)and air-saturated environment
Storage stability24 months provided the sensor material is stored in the dark

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