Knick Oxygen Measurement
Knick’s analog and digital oxygen sensors use amperometric and optical measuring principles to cover a wide range, from trace to pure oxygen.
All sensors are suitable for hygienic applications and are compatible with a wide range of fittings and end brackets, including our retractable fittings such as SensoGate and Ceramat as well as inline fittings, flow-through fittings, and immersion fittings.
MemoSuite Sensor Management Tool
Memosens contactless sensor coupling
SE706 Oxygen Sensor | Memosens | 220 mm
Ex | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
Sensor in robust and hygienic stainless steel design, high accuracy and low detection limit, simple and fast maintenance due to special membrane, digital, with Memosens technology.
- perfect galvanic isolation thanks to Memosens technology
- no influence of humidity in the connector
- precalibration in the lab
- digital data transfer
- integrated sensor diagnostics
- high level of process safety
- durable materials
- robust design
- easy to clean thanks to extremely smooth surface
- cost-efficient service due to easy-to-replace membrane module and interior body
- hygienic design
- high resolution of 6 ppb
- operation also in hazardous locations
Reliable in-line measurement of dissolved oxygen, even under sterile and hygienic conditions. High signal stability. Simple maintenance due to modular design.
Special membrane with steel mesh and PTFE coating. Sterilizable, autoclavable and CIP capable. Also suitable for use in hazardous locations.
Applications
Biotechnology, pharmaceutical industry, fermentation, various fields of analytical chemistry
Specifications
| Measurement Parameter: | Oxygen |
| Permissible pressure range (measurement): | 0.2 ... 6 bar absolute |
| Connector: | Memosens |
| Measuring Range: | pO₂ < 1,200 mbar |
| Explosion protection: | Yes |
| Length: | 220 mm |
| Temperature Detector: | NTC 22 kΩ |
| Measuring principle: | Amperometric |
| Membrane material: | PTFE / silicone / PTFE, FDA compliant (steel-mesh reinforced) |
| Flow dependence: | ≤ 5 % |
| Signal Transmission: | digital |
| Mechanical pressure resistance: | Max. 12 bar absolute |
| Temperature range (stability): | –5 ... +135 °C (steam sterilizable/autoclavable) |
| Accuracy: | 1 % + 4 ppb |
| Signal in ambient air: | 50 ... 110 nA |
| Response time at 25 °C (air –> N2): | 98 % full scale < 90 s |
| Residual signal in O₂-free medium: | ≤ 0.1 % of signal in ambient air |
| O-ring material (process-wetted): | silicone (FDA & USP Class VI tested) |
| Process-wetted sensor parts: | Stainless steel 1.4404 (material certificate 3.1B) |
| Surface roughness: | N 5 (RA < 0.4 μm) |
| Interior body incl. electrodes: | replaceable (ZU 0567) |