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Wide range oxygen monitoring in pipes
Metal Flow-Through Cell with Integrated O2 Sensor FTM2-PSt3
In this metal flow-through cell and oxygen sensor stick with PSt3 sensor (max. measurement range 0 - 100 % O2, limit of detection 0.03 % O2) is integrated. The FTM2 has a connector diameter of 1/4" but it can also be installed in pipes with other diameters using the respective adapters. For sensor read-out, an optical fiber is screwed to the sensor stick via SMA connector. The oxygen probes are very robust and long-term stable. The FTM2-PSt3 can be cleaned by CIP (Cleaning in place, + 80 °C and 2 % NaOH) and stand steam sterilization (+ 130 °C, 1.5 atm). The sensor stick can easily be exchanged if necessary.
- Max. measurement range of 0 - 100 % O2, limit of detection 0.03 % O2
- No consumption of oxygen
- Signal independent of flow velocity
- Autoclavable, SIP (+ 130 °C, 1.5 atm) & CIP (+ 80 °C, 2 % NaOH)
Technical
| Specifications | Gaseous & Dissolved O2 | Dissolved 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 % O2 | 0.020 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 | ||
| Compatibility | Aqueous solutions, ethanol, methanol | |
| No cross-sensitivity | pH 1 - 14, CO2, H2S, SO2, ionic species | |
| Cross-sensitivity | Organic solvents such as pure acetone, toluene, chloroform or methylene chloride Chlorine gas | |
| Sterilization procedure | Steam sterilization Ethylene 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 % | |
| Calibration | Two-point calibration with oxygen-free environment (nitrogen, sodium sulfite) and air-saturated environment | |
| Storage stability | 5 years provided the sensor material 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 + 50 °C Max.: - 40 °C to + 90 °C | |
| Temperature range storage | Optimal: room temperature (+ 20 °C ± 5 °C) Max.: 0 °C to + 70 °C | |
| FTM2 format | Connector diameter: 1/4" | |
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