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Sensata’s New Direct Drive Motor Offers Precision Valve Control

8 November 2017

Sensata Technologies, one of the world’s leading suppliers of sensing, electrical protection, control and power management solutions, has launched the new Limited Angle Torque (LAT) Motor for motorized valve control.

The BEI Kimco model LAT22-18 is a low cost, direct drive motor that can be integrated into a valve assembly for controlling thermostats as well as fuel metering, air intake shut off, fuel shut off, or air start control applications. 

Measuring just 2.2” in diameter by 1.8” in length, the motor features a coil assembly that is completely encapsulated to withstand the harsh chemical environment of the application. The coil assembly also includes threaded mounting holes for easy installation into the valve assembly. The desired size and weight requirements were achieved by attaching permanent magnets directly to the butterfly valve shaft. The keys to the motor’s design are torque capabilities greater than 50oz-in over an excursion angle of 90 degrees, operating temperature ranges from ambient to 257°F (125°C), and its compact size.

In this valve control application, LAT technology was chosen over other solutions because the motor was designed to be used as a direct drive device. Direct drive motors eliminate gear boxes or other mechanical linkages that can break and wear, offering higher reliability and less maintenance. Additionally, because LATs are single phase, they are also simple to control and install.

“LATs are robust and more reliable when compared to other mechanisms such as stepper or other gear motors, and operate smoothly with zero cogging,” said Jim McNamara, Sensata Applications Engineer. “These features make them an excellent choice for precision control. If an LAT can provide the performance level needed for the application, it’s definitely the best way to go.” 

For more information, please contact:

Sensata Technologies Inc.
529 Pleasant Street
Attleboro
MA 02703
Tel:  +1 (508) 236 1044
Fax:  +1 (508) 236 2349
Email: switches@sensata.com
Web:  www.sensata.com
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