COS61-A1F0 Dissolved Oxygen Sensor Water Treatment Stainless Steel IP68 High-Accuracy Probe

1. Hygienic Conductivity Measurement Technology​

The ​Endress+Hauser COS61-A1F0​ is a compact conductivity sensor engineered for sterile processes in pharmaceutical, food, and biotechnology industries. Featuring ​PVDF wetted parts​ with ​electropolished stainless steel electrodes (AISI 316L)​, this device achieves ​​±0.5% accuracy​ across ​0–2000 mS/cm​ ranges. Its ​ATEX/IECEx Zone 1 certification (II 1G Ex ia IIC T6 Ga)​​ and ​SIL 2 compliance (IEC 61508)​​ enable deployment in hazardous areas, while ​IP68/IP69K protection​ withstands CIP/SIP cycles (140°C steam, 5 bar). The integrated ​Pt1000 temperature sensor​ provides automatic compensation (±0.1°C accuracy), and ​four-electrode measurement technology​ eliminates polarization errors. Certified for ​EHEDG Type EL Class I​ and ​3-A Sanitary Standard 18-03, it offers ​G1" DIN 11851 threaded connection​ for zero-dead-leg installation in reactors, purification skids, and USP water systems where biofilm prevention is critical.

​2. Performance Specifications & Industrial Applications​

This sensor delivers ​0.001–2000 mS/cm measurement range​ with ​​<1% long-term drift/year. Key specifications include:

​Process Connection: G1" DIN 11851 (A1F0 suffix)

​Temperature Range: -20°C to +130°C

​Pressure Rating: 16 bar @ 130°C (EN 1092-1)

​Output: 4-20mA HART 7

​Electrode Constant: K=0.4/cm (factory calibrated)

​Response Time: <2s (90% step change)

Applications span ​bioreactor conductivity control, ​CIP rinse monitoring, ​ultrapure water (UPW) systems, and ​buffer preparation. Advantages include ​Heartbeat Diagnostics​ for calibration drift alerts, ​automatic air bubble compensation, and ​FDA 21 CFR 177.2600 compliance. The ​tool-free Memosens 2.0 connection​ enables pre-calibration and plug-and-play replacement, reducing downtime by 80% in GMP environments. Case study: Achieved 0.01 µS/cm stability in Roche monoclonal antibody purification.

​3. Functional Advantages & Compliance Validation​

The COS61-A1F0 excels through:

​Maintenance-Free Operation:
Memosens digital protocol stores calibration data in sensor head

​Contamination Resistance:
Electropolished surfaces (Ra ≤0.4µm) prevent biofilm adhesion

​Safety Integration:
SIL 2 certification for safety instrumented systems

​Diagnostic Intelligence:
Heartbeat Technology verifies sensor health (predictive maintenance)

​Cross-Industry Compliance:
Simultaneously meets 3-A Sanitary, EHEDG, and ASME BPE-2022 SD-3.1

Certified to ATEX/IECEx Zone 1, ISO 15848-1 CO2 Class B leakage, and PED 2014/68/EU. Validated for 5,000 SIP cycles per PDA Technical Report 66.

Packaging & Shipping 

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

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