Multiturn-Wirewound Potentiometer AL20

Robust multiturn potentiometer for precise control tasks

The AL20 series combines a robust and precise design with versatility. With a Ø20 mm plastic housing and a rotary movement of up to 10 turns, it offers a reliable solution for applications that require high precision and stability.

Thanks to a seamlessly moulded housing and two plain bearings, the AL20 series offers exceptional stability that is not available with conventional potentiometers with only one bearing. With a service life of up to 2 million revolutions, an optional slipping clutch, an available 3-turn version, and optional limit switches, the potentiometer offers exceptional versatility.

Optional limit switches that are active within the electrically effective angle of rotation (360° × n) can be configured for additional control tasks. Available types are: CW+CCW for both directions of rotation, CCW for anti-clockwise and CW for clockwise.

The AL20's design, which omits a centering collar, allows for flexible positioning of the potentiometer. This feature offers advantages in applications with limited installation space and facilitates mechanical integration for specific project requirements.

Options:

• Multiturn: Available in 5, 10 (3 turns on request)
• Tandem version: For redundant or galvanically isolated signal output
• Center tap: Enables voltage or current tapping at a defined point on the resistor track and extends the functionality
• Shaft adaptations: Various geometries and lengths available
• Slipping clutch: Available on request
• Limit switch: Available on request for additional control functions
• Linearity: ±0.25 % (option: ±0.10 % for ≥ 5 kOhm at 10 turns)
• Resistance values: 0.1 kOhm to 150 kOhm
• Shaft seal: For applications with increased protection requirements (IP65)
• Screwdriver slot: For simple manual settings