Human Vibration Exposure
The Human Vibration Monitor 100 is a hand-held instrument for measuring human exposure to vibration, performing relevant calculations and providing overall metrics on its LCD display. Detailed vibration levels are easily stored in its built-in data logger, which can hold up to 100 separate time-history test files including all required metrics. This information can then be downloaded to a PC for analysis and archiving.
Product Compliance Testing
Measuring all three axes of vibration simultaneously greatly simplifies the setup of a test and enhances the repeatability and correlation of the vibration data. From the three channels of measured data, the HVM100 automatically calculates the important vector sum information and presents it as a fourth set of data values. For compliance with the latest measurement standards, the HVM100 employs digital filters for each channel that can be enabled as needed.
Measuring Human Vibration
Human vibration in the workplace can be created by the operation of tools, plantmachinery, and various vehicles. Different parts of the human body have resonances and, as you would expect, vibration at a resonant frequency is especially disturbing. As the transmissibility ofvibration to an operator increases in amplitude or duration, it can cause annoyance, fatigue, and at higher exposures, a risk of injury.
Human vibration in the workplace is categorized in two ways:
- Whole-body vibration (WBV) where transmission is from the source through the feet or the buttock and into the body.
- Hand-arm vibration (HAV) where transmission is through the hands and arms when using vibrating tools.
The Larson Davis Human Vibration Meter (HVM100) is well suited for measuring whole-body and hand-arm vibration. It will analyze the data in accordance with the most current ISO requirements to calculate exposure metrics. The HVM100 is used with a miniature accelerometer that can be mounted using various handle adapters or a seatpad accelerometer. Using the Larson Davis Blaze® software, the operator can gather, manage, graph, and report the vibration exposure data.