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E+H Oxymax COS41 Industrial Amperometric Dissolved Oxygen Sensor Probe
COS41-2F
The COS41-2F Amperometric Dissolved Oxygen Sensor is a heavy-duty, high-precision online DO probe engineered for continuous dissolved oxygen monitoring in municipal wastewater, water treatment, aquaculture, and industrial process water. Designed with a robust POM body and a long-life membrane cap, it delivers ultra-stable measurement performance with minimal maintenance overhead.High-Precision Measurement: Wide measuring range from 0.05 to 20 mg/L (ppm) DO. Standard G1" thread process connection, integrated NTC temperature sensor, and TOP68 / fixed cable options for hassle-free installation.
In process automation and liquid analysis, maintaining optimal dissolved oxygen (DO) concentration is critical for operational efficiency and compliance. The COS41-2F Dissolved Oxygen Sensor provides a reliable, cost-effective, and continuous measurement solution tailored for biological treatment processes and surface water monitoring. Operating on the proven amperometric polarographic principle, gold cathode and silver anode electrodes are immersed in an electrolyte solution behind a selective membrane. Oxygen molecules diffuse through the gas-permeable membrane and undergo electrochemical reduction at the working electrode, generating a current directly proportional to the dissolved oxygen partial pressure. Built for a low total cost of ownership (TCO), unlike traditional oxygen probes requiring frequent cleaning and electrolyte refilling, the COS41-2F features a modular membrane module. When maintenance is required, field technicians can simply swap the pre-assembled membrane cap without special tools, significantly reducing plant downtime and labor costs.
Frequently Asked Questions
Q1: How often does the COS41-2F DO sensor require calibration?
A: Under normal wastewater aeration conditions, routine air calibration is recommended every 3 to 6 months depending on bio-fouling levels. Calibration is easily performed in ambient air or water-saturated air.
Q2: What is the expected lifespan of the membrane cap and electrolyte?
A: The membrane cap and electrolyte typically last between 12 to 24 months depending on the process conditions (e.g., presence of oil, harsh chemicals, or heavy solids). Replacement membrane kits are available for fast on-site renewal.
Q3: Can this sensor directly replace standard E+H Oxymax COS41 sensors?
A: Yes. The physical dimensions, thread connection (G1″), cable options, and signal output are 100% compatible with existing COS41 transmitter setups (such as Liquisys COM253/OOM223 series).
Q4: Do you offer OEM/ODM customization and private labeling for international distributors?
A: Absolutely. As a direct manufacturer, we provide OEM cable lengths, customized brand logos, neutral packaging, and tailored process connections (e.g., NPT, flange, or quick-clamp adapters) for global distributors and system integrators.
Spécifications techniques
| Measurement Principle | Dissolved Oxygen Sensor |
|---|---|
| Applications | Aeration tanks, river water monitoring, water treatment, fish farms. |
| Features | Two-electrode dissolved oxygen sensor with membrane coating. |
| Measurement Range | 0.05...20 mg/L |
| Measurement Principle | Sealed two-electrode sensor with membrane coating. |
| Design | - Ultra-stable membrane coating - Analog communication |
| Materials | Sensor body: POM; Membrane cap: POM |
| Dimensions | Diameter: 40 mm (1.56 inch); Length: 220 mm (8.85 inch) |
| Process Temperature | Maximum 50°C (122°F) |
| Process Pressure | Maximum 10 bar (145 psi) |
| Temperature Sensor | Built-in NTC sensor |
| Connection | Process connection: G1"; Cable: Solid cable or with TOP68 connector |
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