E+H Memosens Wave CAS41E Optical Spectrometer Sensor

Real-Time In-Situ Spectroscopic Liquid Analysis

The Endress+Hauser Memosens Wave CAS41E is a state-of-the-art optical spectrometer sensor engineered for continuous in-situ monitoring of organic carbon compounds and nitrogen concentrations in water and wastewater processes. Operating across the ultraviolet and visible spectral range (UV-Vis), the CAS41E measures full absorption spectra to determine key organic load parameters—such as Spectral Absorption Coefficient (SAC), Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), Biological Oxygen Demand (BOD), and Nitrate ($NO_3-N$)—without requiring sampling systems or chemical reagents.

Memosens 2.0 Digital Reliability and Lab-to-Field Calibration

Powered by Memosens 2.0 digital sensor technology, the Memosens Wave CAS41E overcomes conventional analog signal interference, moisture ingress, and cable corrosion. Non-contact inductive coupling ensures 100% signal integrity, even when permanently submerged in harsh effluent channels or humid aeration tanks. Because sensor calibration data, operating hours, and historical diagnostics are saved directly within the smart sensor head, technicians can execute precise sensor calibrations off-site in clean laboratory environments. When reconnected to Liquiline multi-channel transmitters (such as CM442 or CM444), the sensor is automatically recognized, enabling immediate plug-and-play field deployment.

Reagent-Free Operation and Low Maintenance Cost

Unlike wet-chemical analyzers that demand continuous chemical reagent replenishment, hazardous chemical waste management, and frequent mechanical service, the Memosens Wave CAS41E operates completely reagent-free. Its long-life xenon flash lamp light source and solid-state optical design provide high measurement stability with minimal zero-point drift. To prevent biological growth, oil films, and particle accumulation on the optical sapphire windows, the sensor features an integrated cleaning nozzle. Utilizing automated compressed air or flush water bursts controlled by the Liquiline transmitter, the sensor face remains clean, extending maintenance intervals and drastically reducing total operational expenditure.

Seamless Automation Network Integration

The CAS41E connects effortlessly to Endress+Hauser Liquiline digital transmitters to form an integrated, future-proof liquid monitoring system. Through standard industrial communication protocols—including HART, PROFIBUS, Modbus RS485/TCP, and EtherNet/IP—organic parameter and nitrate data are transmitted in real time to central Distributed Control Systems (DCS), Programmable Logic Controllers (PLCs), or cloud-based asset management software. Plant managers can leverage these real-time spectral insights to automate aeration control, optimize chemical dosing in coagulation processes, and maintain strict environmental discharge compliance.

Global Supply and Expert Technical Support

As an experienced international distributor of process automation instrumentation and analytical equipment, we supply 100% genuine Endress+Hauser Memosens Wave CAS41E spectrometer sensors to municipal water utilities, plant engineering contractors, and industrial manufacturing sites globally. Contact our technical sales engineering team to obtain exact pricing, optical path length selection assistance, and fast global shipping choices for your process requirements.

Application

• Municipal Wastewater Treatment: Influent monitoring, primary sedimentation, aeration basin control, denitrification monitoring ($NO_3-N$), and final effluent compliance checking.

• Drinking Water Quality: Raw water intake monitoring, organic load detection (TOC/SAC) in reservoirs, and filtration process optimization.

• Industrial Wastewater Management: Monitoring organic loading (COD/TOC) in chemical, food & beverage, textile, and paper plant discharge channels.

• Environmental & Surface Water Monitoring: Continuous water quality assessment in rivers, lakes, and coastal monitoring stations.

 Technical Parameters

• Measuring Principle: Optical absorption spectroscopy across UV-Vis spectral range (Xenon flash lamp light source)

• Digital Communication Protocol: Memosens / Memosens 2.0 digital technology

• Measured Parameters: SAC254, COD, TOC, BOD, Nitrate ($NO_3-N$), Turbidity / Attenuation

• Optical Path Lengths: 1 mm, 2 mm, 10 mm, 50 mm (selected based on turbidity and concentration range)

• Process Temperature: +0 °C to +50 °C (+32 °F to +122 °F)

• Process Pressure Limit: Up to 6 bar abs (87 psi)

• Sensor Housing Material: Stainless Steel 316L or Titanium (for seawater/corrosive media) with Sapphire optical windows

• Ingress Protection: IP68 (permanently submersible up to 10 m water column)

• Transmitter Compatibility: Endress+Hauser Liquiline CM442, CM444, CM448 series

FAQ

• Q: What organic parameters can the Memosens Wave CAS41E measure?

  A: It measures SAC254, COD, TOC, BOD, and Nitrate ($NO_3-N$), along with turbidity compensation using full UV-Vis spectrum analysis.

• Q: Does the CAS41E require chemical reagents for operation?

  A: No. The sensor uses optical absorption spectroscopy directly in the liquid, eliminating the need for any chemical reagents or waste disposal.

• Q: How does the sensor handle optical window fouling in dirty wastewater?

  A: The CAS41E includes an integrated air/water cleaning nozzle that connects to an automated flush system controlled by the Liquiline transmitter to clear bio-fouling and debris.

• Q: Do you supply original Endress+Hauser units with factory certificates?

  A: Yes, as an international instrument distributor, we supply authentic Endress+Hauser Memosens Wave CAS41E sensors complete with original technical documentation and manufacturer certificates.

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