Ultra-low oxygen measurement in pipes

Metal Flow-Through Cell with Integrated O2 Sensor FTM-PSt9

A sensor stick with PSt9 sensor for measurement of smallest oxygen traces (limit of detection 0.5 ppmv O2, measurement range 0 - 200 ppmv O2) is integrated in this metal flow-through cell. The FTM2-PSt9 is suitable for measurement in gases and available with a connector diameter of 1/4". The cell can also be connected to pipes with other diameters using the respective adapters. A polymer optical fiber is screwed to the sensor stick via SMA connector for sensor read-out. The oxygen probe is very robust and long-term stable. The sensor stick can easily be exchanged, if necessary.

  • Perfusion monitoring in gases down to 0.5 ppmv O2
  • No consumption of oxygen
  • Easy exchange of sensor stick
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Gaseous O2
*at 20 °C, 960 - 980 hPa; humidified gas mixture
**determined changing from 20.9 % oxygen gas to nitrogen 5.0
Measurement range*0 - 200 ppmv O2
Limit of detection*0.5 ppmv O2
Resolution*10 ± 0.5 ppmv O2
100 ± 0.8 ppmv O2
200 ± 1.5 ppmv O2
Response time (t90)*< 10 sec.**
CompatibilityGas phase only!
No cross-sensitivityCO2, H2S, SO2
Cross-sensitivityOrganic vapor
Chlorine gas
CalibrationTwo-point calibration with oxygen-free environment (nitrogen 6.0) and a second calibration value optimally between 100 and 200 ppmv gaseous oxygen
Storage stability5 years provided the sensor is stored at room temperature in dry conditions and in the dark
Pressure resistance10 mbar up to 20 bar (up to 100 bar on special request)
Temperature range operationOptimal: 0 °C to + 40 °C
Max.: - 20 °C to + 60 °C
Temperature range storageOptimal: room temperature (+ 20 °C ± 5 °C)
Max.: 0 °C to + 70 °C
FTM2 formatConnector diameter: 1/4"
Inner diameter: 4.8 mm
Inner volume: 1.0 cm3
Material: stainless steel 316 (body), 316L (sensor stick)

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