Mechanical Vibration Switch offers fine linear adjustment.

Press Release Summary:

Along with respective measurement and frequency ranges of 0–10 g pk and 0–6,000 cpm (0–100 Hz), Model 685A09 Linear Adjust Mechanical Vibration Switch features linear trip adjustment of ~1/4 turn per g that optimizes control over trip sensitivity. Other features include DPDT relay, 10 A dry contacts, and remote reset options of 120 and 240 Vac as well as 24 Vdc. Applications include cooling towers, fin fans, large exhaust and vent fans, HVAC systems, blowers, and motors.

Original Press Release:

IMI Sensors Launches New Linear Adjust Mechanical Vibration Switch

Patent pending design innovation provides better control over trip sensitivity

DEPEW, NY -- IMI Sensors, one of the world's largest manufacturers of industrial vibration monitoring instrumentation, announced the release of the new mechanical vibration switch, Model 685A09.  The new model features a unique new design that provides a much better sensitivity adjustment than the traditional designs.

IMI has developed this new Linear Adjust Mechanical Vibration Switch for use in various applications such as cooling towers, fin fans, large exhaust and vent fans, HVAC systems, blowers and motors.

The new mechanical vibration switch has a significant technical advantage.  The unique new design provides much better trip sensitivity adjustment than traditional designs, which allows a user to better control the trip level in the switch and improve protection of their equipment.  Additionally, due to the design and manufacturing processes used to build the switch, it is more cost competitive than any of the existing mechanical vibration switches on the market.

Some of the other benefits of the new mechanical vibration switch include low cost protection for critical machinery, better sensitivity repeatability on reset, DPDT relay, 10 amp dry contacts and120, 240 VAC or 24 VDC options.

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IMI Sensors, a division of PCB Piezotronics, is the pioneer of ICP® technology and one of the world's largest manufacturers of 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, 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 covered by a Lifetime Warranty. With a customer support team of more than 30 Customer Service Representatives and Application Engineers, IMI proudly stands behind our products with the services our customers value most, including a 24-hour SensorLinesm, a global distribution network, and the industry's only commitment to Total Customer Satisfaction. Visit IMI at


PCB Piezotronics is a global leader in the design and manufacture of microphones, vibration, pressure, force, torque, load, and strain sensors, as well as the pioneer of ICP® technology. This instrumentation is used for test, measurement, monitoring, and control requirements in automotive, aerospace, industrial, R&D, military, educational, commercial, OEM applications, and more. Visit us at

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