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Perfusion monitoring in pipes

Oxygen Sensor Integrated in Metal Flow-Through Cell FTM-M10-PSt3

An Oxygen Exchange Cap (OEC-M10) with PSt3 sensor (max. measurement range 0 - 100 % O2, limit of detection 0.03 % O2) is integrated in a metal flow-through cell via M10 thread. The FTM is available with connector diameters of 6 mm, 1/4" or 1/2" and can be connected to pipes with other diameters using the respective adapters. For sensor read-out an optical fiber is connected. Fibers covered in a protective metal spiral tube can be connected to the FTM magnetically. The oxygen probe is very robust and long-term stable. It can be cleaned by CIP (Cleaning in place, + 80 °C and 2 % NaOH) and stands steam sterilization (+ 130 °C, 1.5 atm). The OEC-M10 can easily be exchanged, if necessary.

  • Max. measurement range 0 - 100 % O2, limit of detection 0.03 % O2
  • Different FTM sizes available
  • No consumption of oxygen
  • 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 O2Dissolved 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 % O20.020 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
CompatibilityAqueous solutions, ethanol, methanol
No cross-sensitivitypH 1 - 14, CO2, H2S, SO2, ionic species
Cross-sensitivityOrganic solvents such as pure acetone, toluene, chloroform or methylene chloride
Chlorine gas
Sterilization procedureSteam 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 stability5 years provided the sensor material is stored at room temperature in dry conditions and in the dark
Pressure resistance10 mbar up to 20 bar
Temperature range operationOptimal: 0 °C to + 50 °C
Max.: - 40 °C to  + 90 °C
Temperature range storageOptimal: room temperature (+ 20 °C ± 5 °C)
Max.: 0 °C to + 70 °C
FTM-M10 formatsConnector diameter6 mm1/4"1/2"
Inner diameter4.7 mm4.8 mm10.4 mm
Inner volume1.1 cm31.2 cm35.0 cm3
MaterialStainless steel 316L (body), 304 (OEC-M10)

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