Endress+Hauser CLS50-A1B6 Optical Liquid Analyzer | Replacement, Equivalent & Selection Guide
The Endress+Hauser CLS50-A1B6 is a compact optical liquid analyzer from the CLS50 series, designed for continuous inline measurement of turbidity, color, and interface detection in industrial process environments. This page provides full technical specifications, compatible replacement models, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Manufacturer: Endress+Hauser
- Model / SKU: CLS50-A1B6
- Series: CLS50
- Type: Optical Liquid Analyzer (Turbidity / Interface Detection)
- Measurement Principle: Optical (scattered light / transmitted light)
- Process Connection: Inline immersion probe
- Output Signal: 4–20 mA analog / digital communication
- Supply Voltage: 20–30 V DC
- Ingress Protection: IP67 / IP68
- Ambient Temperature: –20 to +60 °C
- Process Temperature: Up to +80 °C (standard)
- Housing Material: Stainless steel / PBT
- Weight: Approx. 1,200 g
- Approvals: CE, ATEX (variant-dependent)
- Country of Origin: Germany
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as direct or functional replacements for the CLS50-A1B6. Always verify process parameters before substitution.
- Endress+Hauser CLS50-A1B5 — Same series, different output configuration; verify signal compatibility
- Endress+Hauser CLS50-A2B6 — Extended temperature variant; drop-in mechanical replacement
- Endress+Hauser CLS54 — Next-generation CLS series with enhanced diagnostics (Heartbeat Technology)
- Hach SOLITAX sc — Functional equivalent for turbidity measurement; requires transmitter adaptation
- METTLER TOLEDO InPro 8000 — Comparable optical sensor; different process connection standard
- Bürkert 8905 — Alternative inline optical analyzer; evaluate output protocol compatibility
Why Choose the Original CLS50-A1B6
- Factory-calibrated and traceable to international standards
- Proven long-term stability in continuous process environments
- Full Endress+Hauser service network and spare parts availability
- Seamless integration with Liquiline, Mycom, and Liquisys transmitter families
- Documented SIL and ATEX compliance for safety-critical installations
Typical Applications
- Drinking water and wastewater treatment turbidity monitoring
- Pharmaceutical process liquid clarity verification
- Food & beverage CIP/SIP phase detection
- Chemical process interface detection (oil/water separation)
- Pulp & paper consistency measurement
- Power plant cooling water monitoring
System Compatibility
The CLS50-A1B6 is compatible with the following Endress+Hauser transmitter and controller platforms:
- Liquiline CM442 / CM444 / CM448 — Multi-parameter transmitter (recommended)
- Mycom CLM223 / CLM253 — Dedicated conductivity/optical transmitter
- Liquisys COM223 / COM253 — Compact transmitter for optical sensors
- Fieldgate FXA42 — Remote monitoring via HART/Modbus
Third-party transmitters with 4–20 mA input and appropriate sensor supply voltage (20–30 V DC) may also be compatible. Consult wiring diagrams before installation.
Selection Guide
Use the following criteria to confirm the CLS50-A1B6 is the correct model for your application:
- Measurement range: Confirm turbidity or interface range matches process requirements
- Process temperature: Standard version rated to +80 °C; select high-temp variant if exceeded
- Process pressure: Verify probe pressure rating against system operating pressure
- Output signal: A1 = 4–20 mA; confirm transmitter input compatibility
- Process connection: B6 = specific immersion fitting; verify thread/flange standard
- Hazardous area: If ATEX/IECEx required, specify Ex-rated variant at order
- Cleaning: Confirm CIP/SIP compatibility if installed in hygienic processes
Quality Assurance & Sourcing
Konmask.com sources industrial automation components through verified supply channels. Each unit is:
- Inspected for physical integrity and label authenticity upon receipt
- Stored in ESD-safe, climate-controlled conditions
- Shipped with original manufacturer documentation where available
- Supported by our technical team for pre-sales specification queries
We supply both new original and surplus/refurbished units. Condition and warranty terms are clearly stated on each listing. Contact us to confirm current stock status and lead time.
How to Order
- Step 1: Confirm full model number — CLS50-A1B6 (verify no suffix variants required)
- Step 2: Add to cart or contact us for bulk/project pricing
- Step 3: Provide your shipping address and preferred freight method
- Step 4: Receive order confirmation with estimated lead time within 1 business day
For urgent requirements or project quantities, email support@konmask.com or call +0086 19859288691.
Replacement & Compatibility FAQ
Q: Can the CLS50-A1B6 replace an older CLS50-A1B5 directly?
A: Mechanically yes in most cases, but verify the output signal suffix (B5 vs B6) against your transmitter wiring documentation before installation.
Q: Is the CLS54 a drop-in replacement for the CLS50-A1B6?
A: The CLS54 uses the same probe form factor but adds Heartbeat Technology diagnostics. It is backward-compatible with most CLS50 transmitters; confirm firmware version support.
Q: Can I use a third-party transmitter with the CLS50-A1B6?
A: Yes, provided the transmitter supplies 20–30 V DC to the sensor and accepts a 4–20 mA return signal. Consult the CLS50 operating manual (BA00443C) for wiring details.
Q: What is the typical lead time for the CLS50-A1B6?
A: Stock items ship within 3–5 business days. Non-stock orders are subject to manufacturer lead times; contact us for current availability.
Q: Do you provide calibration certificates?
A: Factory calibration documentation is included with new original units. Recalibration services can be arranged upon request.
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