No U.S. federal standards exist to limit worker exposure to hand-arm vibration (HAV), but the National Institute for Occupational Safety and Health suggests that high HAV acceleration levels (5-36 m/s2) can cause physical effects—and even permanent injury—if left unchecked and untreated. A new series of triaxial accelerometers launched this August by PCB Piezotronics’ Larson Davis division is designed to measure workers’ exposure to HAV. Series SEN04xF helps determine the potential for injury from exposure, an aspect that should be part of any comprehensive ergonomic evaluation and risk assessment program, the company says.
Models SEN040F (1 mV/g sensitivity) and SEN041F (10 mV/g sensitivity) can be mounted onto a variety of mechanical mounting adapters for HAV studies. The compact models are designed with special integral low-pass filtering circuits that minimize false readings from shock and mechanical resonances. They also feature miniature four-pin connectors and are available with heavy-duty cables that interface with the Larson Davis HVM100 Human Vibration Exposure Monitor. (www.larsondavis.com)