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FTCM-PSt7 Oxygen Microsensor Integrated in Metal Flow-Through Cell

Oxygen Monitoring in Smallest Volumes of Gases or Liquids

Oxygen Microsensor Integrated in Metal Flow-Through Cell FTCM-PSt7

The FTCM-PSt7 is a stainless steel tee with integrated microsensor. It has connectors for 1/16” steel tubing. Its inner volume of 2.1 µL is extraordinarily small, so it is ideally suited for all applications where only small volumes are available. With the tapered sensor type and its fast response time of t90 < 3 sec. in gas and < 10 sec. in liquids, real-time oxygen monitoring can be performed. The integrated PSt7 type sensor has a measurement range of 0 – 100 % oxygen, and a detection limit of 0.03 % oxygen.

  • Perfusion monitoring in smallest volumes
  • High temporal resolution (t90 < 3 s)
  • No consumption of oxygen
  • Signal independent of flow velocity
  • Measures in liquids as well as in the gas phase
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Technical

SpecificationsGaseous & Dissolved O2Dissolved O2
*after two-point calibration as described in the manual
Measurement range0 – 100 % O2
0 – 1000 hPa

0 – 45 mg/L

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

± 0.01 % O2 at 1  % O2
± 0.05 % O2 at 20.9 % O2

± 0.005 mg/L at  0.4mg/L

± 0.025 mg/L at 9.06 mg/L
Accuracy at + 20 °C*± 0.05 % O2 or ± 3 % rel.
Measurement temperature rangefrom 0 to + 50 °C
Response time (t90)< 3 sec. (gas)< 10 sec. (liquid)
Properties  
CompatibilityAqueous solutions, ethanol, methanol
No cross-sensitivity

pH 1 – 14
CO2, H2S, SO2
Ionic species

Cross-sensitivity

Organic solvents, such as acetone, toluene, chloroform or methylene chloride
Chlorine gas

Sterilization procedureEthylene oxide (EtO), recalibration recommended
Cleaning procedure

3 % H2O2
Ethanol
Soap solution

CalibrationTwo-point calibration with oxygen-free environment (nitrogen, sodium sulfite) and air-saturated environment
Storage stability60 months provided the sensor material is stored in the dark at room temperature

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