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Easy Integration into Transparent Vessels for Online Oxygen Monitoring

Self-adhesive Oxygen Sensor Spot SP-PSt3-SA

With the new self-adhesive technology it is easy to integrate these sensor spots in nearly any transparent glass or plastic vessel. The oxygen is measured contactless and non-destructively from the outside – through the vessel wall. The SP-PSt3-SA has a measurement range of 0 – 100 % oxygen in dissolved or gaseous phase and can therefore be used for measurements in liquids as well as in headspace. These sensor spots are extremely versatile and can be applied from biotechnological applications up to quality checks for packed or bottled products.

  • Simplified integration with new self-adhesive technology
  • Compatible with glass & nearly all plastic vessels
  • Pre-calibrated & ready-to-use
  • Online monitoring without sampling
  • Non-invasive measurements through the vessel wall

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 procedureEthylene 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 %
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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