Endress+Hauser CLS50-A1B6 Optical Liquid Analyzer – Obsolete Memosens Spare Part

Technical Dossier

Product Details And Specifications

Endress+Hauser CLS50-A1B6 Optical Liquid Analyzer – Obsolete Memosens Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters not independently verified. Specifications above are drawn from publicly available Endress+Hauser documentation. Do not substitute unverified data for safety-critical installations.

Solving the Discontinued Hardware Crisis

The CLS50-A1B6 was designed for continuous, in-line optical measurement in demanding process environments. Its Memosens digital interface eliminated analog signal drift and allowed sensor data — calibration history, operating hours, temperature exposure — to be stored directly on the sensor head. Plants that adopted this architecture in the 2010s built their process control logic around it. Transmitters were configured, alarms were set, and validation protocols were written specifically for the CLS50 signal chain.

Endress+Hauser has since advanced its optical sensor portfolio, but the installed base of Memosens-compatible transmitters in legacy plants has not disappeared. Replacing the CLS50-A1B6 with a current-generation sensor is not always a drop-in exercise: firmware compatibility between older Liquiline transmitters and newer sensor generations must be verified, and in GMP-regulated facilities, any hardware change triggers a formal change control process.

Condition & Reliability Assurance

Obsolete optical sensors present specific failure modes that differ from standard mechanical wear. Our 5-step QA protocol for the CLS50-A1B6 addresses each one directly:

• Optical window inspection: The measurement window is examined under controlled lighting for fouling, micro-cracking, or coating degradation that would corrupt turbidity or color readings.
• Electrolytic capacitor assessment: Internal capacitors are checked for signs of electrolyte migration or bulging — a common failure mode in sensors stored beyond five years.
• Memosens chip and firmware verification: The onboard Memosens EEPROM is read to confirm calibration data integrity and firmware version compatibility with target transmitter generations.
• Pin and connector corrosion inspection: The inductive coupling interface and any exposed contacts are inspected for oxidation or mechanical deformation that would impair signal transmission.
• Functional bench test: Where test equipment permits, the sensor is subjected to a simulated measurement cycle to confirm baseline optical response before dispatch review.

Key Features for System Maintenance

Can you source other discontinued Endress+Hauser Memosens sensors?
Yes. DriveKNMS specializes in hard-to-find process instrumentation across multiple manufacturers. Contact us with your part number and we will advise on availability.