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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Technical

Specifications	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.**
Properties
Compatibility	Gas phase only!
No cross-sensitivity	CO₂, H₂S, SO₂
Cross-sensitivity	Organic vapor Chlorine gas
Calibration	Two-point calibration with oxygen-free environment (nitrogen 6.0) and a second calibration value optimally between 100 and 200 ppmv gaseous oxygen
Storage stability	5 years provided the sensor is stored at room temperature in dry conditions and in the dark
Pressure resistance	10 mbar up to 20 bar (up to 100 bar on special request)
Temperature range operation	Optimal: 0 °C to + 40 °C Max.: - 20 °C to + 60 °C
Temperature range storage	Optimal: room temperature (+ 20 °C ± 5 °C) Max.: 0 °C to + 70 °C
FTM2 format	Connector diameter: 1/4" Inner diameter: 4.8 mm Inner volume: 1.0 cm³ Material: stainless steel 316 (body), 316L (sensor stick)