Paddle Flow Switch resists corrosion and reacts to force.

Press Release Summary:



SF Series has ABS housing for high corrosion resistance. Reactive force is induced in paddle in proportion to rate of flow in pipe, and reaction generates proportional resistance in control spring. Variable force balance is maintained between flow and control spring until flow exceeds set flow rate. When flow reaches set point, reaction plate activates micro-switch to make or break contacts.



Original Press Release:


Paddle Flow Switch Features High Corrosion Resistance, Extremely Long Life


SF Series Paddle Flow Switch

Paddle Flow Switch Features High Corrosion Resistance, Extremely Long Life

LOGAN, UT -- Scientific Technologies Inc. (STI), Automation Products Group, introduces the SF Series Paddle Flow Switch. The SF series features high life expectancy because the paddle movement is transmitted to the switch through a flexible bellow, while the ABS housing provides an attractive design and high corrosion resistance. Unitized construction and reduced parts make it easy to assemble, and its compact size facilitates easy field-installation.

Operation of the SF Series is simple. A reactive force is induced in the paddle in proportion to the rate of flow in the pipe, and the reaction generates a proportional resistance in the control spring. As a result, a variable force balance is maintained between the flow and the control spring until the flow exceeds a set flow rate. When the flow reaches the set point, the reaction plate activates the micro-switch to make or break the contacts.

STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies." STI's Automation Products Group serves the factory automation, semiconductor, transportation, oil and gas, consumer and food processing industries with a diversified offering of sensing technologies. Products include level, flow, pressure sensing, positioning transducers, vehicle separation, profiling and ultrasonic sensors and controls

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