Endress+Hauser CLS50-G1B1 High-Performance Limit Switch for Reliable Level Detection

The Endress+Hauser CLS50-G1B1 is a robust and versatile electromechanical limit switch designed for reliable point level detection across numerous demanding industrial applications. As part of Endress+Hauser's renowned CLS50 series, this model combines proven mechanical simplicity with high-quality engineering, offering a cost-effective and maintenance-friendly solution for monitoring overfills, dry-run protection, and intermediate level points in silos, tanks, and conveyors.

Product Description

The CLS50-G1B1 is a paddle-type level switch. Its operation is straightforward and highly dependable: a motor rotates a paddle at low speed. When the rising media (powders, granules, or bulk solids) impedes the paddle's rotation, a torque-sensitive mechanism actuates a heavy-duty changeover contact (SPDT). This mechanical action directly switches the relay, providing a clear and immediate control signal without the need for complex electronics. The G1B1 variant features a rugged, coated aluminum housing (IP65/IP66 rated) and a stainless steel paddle shaft, making it suitable for harsh environments.

Key Technical Parameters (CLS50-G1B1)

Operating Principle: Electromechanical, paddle-type

Output: Single-pole double-throw (SPDT) changeover contact, 250 VAC, 10 A

Process Connection: Threaded (e.g., G1, 1¼" NPT) or flange options

Process Temperature: -25 to +80 °C (standard)

Housing Protection: IP65 / IP66, corrosion-resistant aluminum

Paddle Material: Stainless steel (standard)

Power Supply: Not required for switching; external voltage for motor (e.g., 110/230 VAC)

Applications: Suitable for bulk solids with a minimum density of ~0.1 g/cm³

Main Advantages and Benefits

Unmatched Reliability: Purely mechanical switching ensures fail-safe operation, even in dusty conditions or during power fluctuations, where capacitive or vibratory forks might falter.

Simple Setup & Maintenance: No calibration or sensitivity adjustments are needed. Its robust design minimizes wear, and the modular construction allows for easy inspection and part replacement.

High Switching Capacity: The built-in 10A relay can directly control pumps, conveyors, or alarms without an additional interposing relay, saving cost and panel space.

Durability in Harsh Conditions: The high ingress protection rating and corrosion-resistant housing ensure long service life in outdoor or industrial settings.

Cost-Effectiveness: Delivers Endress+Hauser quality and reliability at a competitive total cost of ownership, thanks to low installation, operation, and maintenance costs.

Primary Applications

The CLS50-G1B1 is ideal for point level detection in:

Silos & Hoppers: High- and low-level detection for grains, plastics, cement, sand, and other bulk solids.

Dust Collectors & Filters: Bin level control for dust and powder discharge.

Conveying Systems: Plug chute detection and flow monitoring.

Food & Pharmaceutical: Level control of sugar, flour, pellets (with appropriate hygienic options).

Building Materials: Monitoring levels of gypsum, granules, and additives.

Keywords

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