IMI Sensors Receives Patent for "Linear Adjust" Mechanical Vibration Switch

DEPEW, NY — IMI Sensors, a PCB Piezotronics Division and manufacturer of industrial vibration monitoring instrumentation, such as accelerometers, vibration transmitters, and switches announced the receipt of U.S. Patent No. 9,024,712 from the U.S. Patent and Trademark Office (USPTO) on its 685A-Series "Linear Adjust" Mechanical Vibration Switch.

The innovative "Linear Adjust" perpendicular magnet-mass design provides more precise sensitivity adjustments (approximately ¼ turn per g) and more consistent sensitivity over all three axes when compared to competitive models based on the parallel magnet-mass design.

The mechanical vibration switches are used in applications such as cooling towers, HVAC systems, motors pumps, blowers, fin fans and large exhaust and vent fans.

The switch is available in five stocked models as listed in the table below:

Model                                    CSA/UL Approval                                 Remote Reset

685A08                                    Yes                                                             No

685A09                                    No                                                               No

685A19                                    No                                                               Yes (+/- 24 VDC)

685A29                                    No                                                               Yes (120 VAC)

685A39                                    No                                                               Yes (240 VAC)

IMI offers other vibration switches, including 4-20 mA electronic switches (685B Series) and USB-programmable smart switches (686B Series). Additional information about IMI's complete line of vibration switches can be found at: For all technical inquiries and application support, please contact Eric Yax at or 716-684-0003 x2377.

About IMI Sensors

IMI Sensors, a division of PCB Piezotronics, manufactures industrial vibration monitoring instrumentation, such as accelerometers, vibration transmitters and switches. These sensors feature rugged stainless steel housings and survive in harsh environments like paper and steel mills, mines, gas turbines, water treatment facilities and power plants. Integrating with portable analyzers and PLC's, IMI instrumentation helps maintenance departments reduce downtime and protect critical machinery. Our Platinum Stock Products program ensures fast delivery of over 10,000 sensors that are in stock and covered by a Lifetime Warranty. With a customer support team of more than 30 Customer Service Representatives and Application Engineers, IMI proudly stands behind their products with the services you value most, including 24-hour technical support, a global distribution network, and the industry's only commitment to Total Customer Satisfaction. Visit us at

PCB Piezotronics

3425 Walden Ave

Depew, NY14043

IMI Sensors - Marketing

Nikki E. Kapilevich

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