Product News: Sensors Monitors & Transducers

639A91 ICP® Triaxial Accelerometer is made of 316L stainless steel.

Press Release Summary:

639A91 ICP® Triaxial Accelerometer is made of 316L stainless steel.

Jul 13, 2017 -

Delivering frequency response on three axes up to 10 kHz, 639A91 ICP® Triaxial Accelerometer comes in foot print of 24.1 mm x 24.1 mm size. Equipped with four-pin M12 connector, unit comes with frequency range of 0.5 to 10,000 Hz. Product is suitable to identify high-frequency gearbox faults, motor and pump high-frequency bearing faults.

Original Press Release

IMI Sensors Launches Model 639A91 High Frequency ICP® Triaxial Accelerometer

Press release date: Jul 12, 2017

Market's Smallest, Truly-Industrial Triaxial ICP® Accelerometer with High Frequency Response

IMI Sensors, manufacturer of industrial vibration and pressure monitoring instrumentation, announced the release of industry's smallest, truly-industrial triaxial ICP® accelerometer with high frequency response, Model 639A91.

The model features:

  • Frequency response on all three axes up to 10 kHz (±3dB).
  • Extremely small footprint (0.95" x 0.95" [24.1 mm x 24.1 mm] excluding the side exit connector).
  • Case-isolated housing of 316L stainless steel and rugged four-pin M12 connector to withstand the harshest environments.
  • Available in hazardous area approved version (Model EX639A91).

With a frequency range of 0.5 to 10,000 Hz, this product will allow customers to now use an ICP® triaxial accelerometer to:

  • Identify motor & pump high-frequency bearing faults in addition to low-frequency faults such as misalignment.
  • Identify high-frequency gearbox faults such as eccentric gears and gear-mesh wear.
  • Use a triaxial ICP® sensor with high frequency demodulation programs offered by data collector producers.

IMI offers cable assemblies and mounting accessories to support the launch of these two new models, including Model 059QHBZ (4-conductor, shielded, polyurethane jacket cable with a 4-socket M12 connector on one end and blunt cut termination on the other). Additional information about IMI's complete line of ICP® triaxial accelerometers sensors can be found at

About IMI Sensors

IMI Sensors 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


Amy Jeary


IMI Sensors

(716) 684-0002

Meredith Christman

716-684-0003 x2071