Endress+Hauser CLS50D-AA1B31 Precision Level Detection for Demanding Applications

The Endress+Hauser CLS50D-AA1B31 is an advanced capacitance-based level switch designed for reliable point-level detection in a wide range of liquids, pastes, and bulk solids. As part of Endress+Hauser's proven CLS50 family, this robust sensor is engineered for challenging industrial environments, offering exceptional performance in applications involving high temperatures, pressures, and corrosive media. It provides a critical safety and process control function by signaling when material reaches a predefined high or low level, preventing overfills, dry-run conditions, and ensuring optimal process efficiency.

Key Specifications & Parameters

The CLS50D-AA1B31 model is defined by its specific configuration, ensuring suitability for demanding tasks. Key parameters include:

Measurement Principle: Capacitance with Active Shielding (Capeode® technology) for superior noise immunity and reduced coating influence.

Process Connection: G1½" A (threaded), suitable for standard tank openings.

Process Temperature Range: Up to +200 °C (+392 °F), enabling use in hot process media.

Process Pressure Range: Up to 40 bar (580 psi), ideal for pressurized vessels.

Electrode Type: Rigid rod electrode, fixed length (model-specific).

Housing Protection: IP66/IP67 rated, ensuring protection against dust and water ingress.

Electrical Connection: M12x1 connector for quick and secure installation.

Output: SPDT relay output for flexible control circuit integration.

Material: The process wetted parts typically feature a Hastelloy C276 probe and PTFE insulation, providing excellent corrosion resistance.

Core Advantages & Benefits

Choosing the CLS50D-AA1B31 delivers significant operational advantages:

Unmatched Reliability: Its robust design and advanced Capeode® technology ensure stable switching and minimal false signals, even in the presence of material build-up or aggressive process conditions.

High Process Resilience: Withstanding extreme temperature and pressure makes it a versatile solution for demanding sectors like chemical processing, oil & gas, and power generation.

Easy Installation & Setup: The device features intuitive push-button calibration and comprehensive diagnostics, reducing commissioning time and maintenance effort.

Safety & Cost Efficiency: By preventing spills, overfills, and equipment damage, it safeguards personnel, protects the environment, and avoids costly downtime and product loss.

Typical Applications

This level switch is perfectly suited for point-level detection in:

Chemical & Pharmaceutical Industry: In reactors, storage tanks for aggressive liquids, solvents, and pastes.

Oil & Gas: Interface detection in separators, level control in produced water tanks, and high-pressure vessels.

Food & Beverage: Level monitoring in cookers, tanks containing viscous ingredients (sauces, creams).

Power Plants: Boiler feedwater, condensate tanks, and auxiliary systems.

Water & Wastewater: Level alarms in chemical dosing tanks and sludge hoppers.

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