COS41-4F Endress+Hauser Dissolved Oxygen Sensor: Amperometric Measurement for Water & Wastewater | Technical Specifications
Product Overview
The Endress+Hauser COS41-4F is an amperometric dissolved oxygen sensor from the Oxymax series, designed for continuous monitoring in water, wastewater, and industrial applications. Using a robust two-electrode system with a selective membrane, it ensures high accuracy and long-term stability in harsh environments. With minimal maintenance requirements and simple air calibration, the sensor is ideal for optimizing processes like aeration control in wastewater treatment or water quality monitoring in natural resources .
Technical Specifications
| Parameter | Specification |
| Model Number | COS41-4F |
| Brand/Series | Endress+Hauser Oxymax COS41 |
| Measurement Principle | Amperometric (membrane-covered two-electrode system) |
| Measurement Range | 0.05–20 mg/l |
| Accuracy | ±0.1 mg/l (0–10 mg/l); ±0.2 mg/l (10–20 mg/l) |
| Process Temperature | 0–50°C (32–122°F) |
| Process Pressure | Up to 10 bar (145 psi) |
| Response Time (T90) | <90 seconds |
| Sensor Material | Body: POM; Membrane Cap: POM |
| Dimensions | Ø40 mm × 220 mm (1.56" × 8.85") |
| Connection | Fixed cable or TOP68 plug (G1" process thread) |
| Calibration | Air calibration (no zero-point adjustment required) |
| Protection Rating | IP68 (submersible) |
Key Features
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High Accuracy and Stability: The sensor’s selective membrane technology ensures reliable oxygen detection with minimal drift over time, reducing recalibration needs in fluctuating conditions .
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Low Maintenance Design: The robust POM housing and interchangeable membrane cap withstand corrosive media. Air calibration can be performed quickly without removing the sensor from the process, cutting downtime .
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Long Service Life: The sealed reference electrolyte and durable electrode system provide consistent performance, even in high-load wastewater or industrial effluents, extending service intervals .
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Flexible Integration: Compatible with Endress+Hauser transmitters (e.g., Liquisys COM253) via TOP68 connectors, enabling seamless data transmission for centralized control systems .
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Harsh Environment Suitability: With IP68-rated connections and resistance to chemical exposure, the COS41-4F operates reliably in humid, dusty, or submerged conditions .
Application Scenarios
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Wastewater Treatment Plants: Monitors and controls aeration tank oxygen levels to optimize biological degradation processes, reducing energy consumption .
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Surface Water Monitoring: Tracks dissolved oxygen in rivers, lakes, or oceans to assess water quality and support environmental compliance .
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Drinking Water Management: Ensures optimal oxygen levels in potable water systems to prevent corrosion and maintain safety .
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Aquaculture and Fisheries: Maintains ideal oxygen concentrations in fish farms to promote healthy growth and prevent mortality .
Note: Specifications are based on manufacturer documentation and industry sources. Verify parameters against the latest technical guides for specific applications.
About Achievers Automation Limited
Achievers Automation Limited is a well-established player in the field of industrial automation with over 12 years of experience. The company provides a comprehensive range of industrial automation components and instruments to customers in over 45 countries worldwide.
Frequently Asked Questions
Q: Are the Products Genuine OEM Units?
A: These items have been certified by Achievers Automation Limited to be genuine OEM Units obtained through OEM or independent third-party channels.
Q: How will you arrange shipment?
A: We can arrange shipment based on your request. We have cooperated forwarders who can arrange shipment via FedEx, DHL, TNT with competitive pricing.
Q: What is the warranty of goods?
A: One-year Warranty.
