Bullet Sensors & Transducers e-Digest, Vol. 87, Issue 1, January 2008: Product News

    (ISSN 1726- 5479)


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High Frequency ICP® Industrial Accelerometer Operates to 30k Hz for Gear Mesh and Bearing Fault Diagnosis



Depew, NY, USA – Model 621B40 high-frequency industrial ICP® accelerometer from the IMI Sensors division of PCB Piezotronics (PCB®) works with online or portable monitoring systems to provide reliable, effective vibration monitoring. It operates to 30k Hz, even with a magnet, and captures high frequency gear mesh faults often missed during routine route-based measurements. Due to the sensor’s high frequency range, it is ideal for measurements on high-speed compressors, gear boxes and turbomachinery, for early detection of impending problems.


When analyzing the condition of an integral gear compressor, a technician must be able to examine gear mesh frequency and its sidebands. The harmonics of the gear mesh and natural frequency of the gears play a significant role in diagnosing potential machinery faults.  A magnetically mounted Model 621B40 supplies a response to more than 30k Hz, allowing a vibration analyst to obtain precise measurements of these high frequency phenomena. For more detailed specifications, drawings, or additional information, please visit www.pcb.com.


Celebrating 40 years of products, innovation and customer service, PCB® is a global leader in the design and manufacture of force, torque, load, strain, pressure, acoustic and vibration sensors, as well as the pioneer of ICP® technology. Core competencies include ICP® and charge output piezoelectric, piezoresistive, strain gage, MEMS and capacitive sensors and instrumentation. With 24-hour customer support; direct sales offices throughout Europe and Asia; and an established global distribution network, PCB® attributes its continued growth to an unwavering commitment to total customer satisfaction.







Eric Yax

Division Manager

IMI Sensors Division

3425 Walden Avenue,

Depew, NY 14043-2495, USA

Tel.: (800) 959-4464 ext. 2377,

Fax: (716) 684-3823

E-mail: imi@pcb.com

621B40 industrial accelerometer





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