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Replacement Oxygen Sensor for OXYBase® WR
Oxygen Exchange Cap OEC-PSt3-NAU
The Oxygen Exchange Cap is made of stainless steel and has an integrated sensor type PSt3. This sensor has a maximum measurement range of 0 - 100 % O2, and a detection limit of 0.03 % O2. It can be screwed to the top of the OXYBase® WR fitting to replace a used sensor. The OEC-PSt3-NAU is available in different versions: USP Class VI compatible (YOP), safe for food applications (CAF), with hydrophobic Teflon coating (PTFE), or without optical isolation for fast response times (OIW). The cap is not autoclavable.
- Maximum measurement range of 0 - 100 % O2
- Different versions: USP Class VI compatible, food applications, aggressive environments, or fast response time
- Easy exchange due to barcode calibration
- Pressure resistant
Technical
| Specifications | OEC-PSt3-NAU-YOP | OEC-PSt3-NAU-CAF | OEC-PSt3-NAU-PTFE | OEC-PSt3-NAU-OIW |
|---|---|---|---|---|
*at 20 °C, 960 - 980 hPa; humidified gas mixture | ||||
| Measurement range* | Optimal: 0 - 50 % O2, 0 - 500 hPa, 0 - 22.5 mg/L Max.**: 0 - 100 % O2, 0 - 1000 hPa, 0 - 45 mg/L | |||
| Limit of detection* | 0.03 % O2, 0.3 hPa, 0.020 mg/L | |||
| Resolution* | 1 % O2 ± 0.02 % O2, 20.9 % O2 ± 0.1 % O2 0.4 mg/L ± 0.009 mg/L, 9 mg/L ± 0.04 mg/L | |||
| Response time (t90) Gaseous O2*** Dissolved O2**** | < 10 sec. < 30 sec. | < 15 sec. < 40 sec. | < 85 sec. < 100 sec. | < 3 sec. < 3 sec. |
| Properties | ||||
| Compatibility | Aqueous solutions, ethanol, methanol | |||
| No cross-sensitivity to | pH 1 - 14, CO2, H2S, SO2, ionic species | |||
| Cross-sensitivity to | Chlorine gas Organic solvents such as pure acetone, toluene, chloroform or methylene chloride | |||
| Cleaning procedure | 3 % H2O2, acidic agents (HCl, H2SO4) max. 4 - 5 % Cleaning agents containing ClO2 at room temperature | |||
| Calibration | Two-point calibration in oxygen-free (e. g. nitrogen 5.0, 1 % sodium sulfite solution) and air-saturated environment (20.9 % oxygen gas, air-saturated water) | |||
| Storage stability | 5 years provided the sensor material is stored at room temperature in dry conditions and in the dark | |||
| Pressure resistance* | 3 bar | |||
| Temperature range operation | Optimal: 0 °C to + 40 °C Max.: - 10 °C to + 90 °C | |||
| Temperature range storage | Optimal: room temperature (+ 20 °C ± 5 °C) Max.: 0 °C to + 70 °C | |||
| Variants | USP Class VI compatible | Safe for food applications | Hydrophobic Teflon coating | Fast response time |