Grammer takes measure of vibrations

  • 27-Mar-2009 02:27 EDT
Once attached to an operator seat, Grammer’s Movito D continuously measures vibration load and outputs visual and audible signals if vibrations surpass legal limits.

EU directive 2002/44EC requires all employers to be aware of, monitor, and—if necessary—take action to reduce the vibrations their employees are exposed to. While the rule applies mainly to the construction and agriculture industry, truck, bus, and van drivers also stand to benefit. Employers who do not comply can be fined.

In response, Grammer AG and development partner Wölfel developed Movito D and Movito S, solutions for capturing, analyzing, and eliminating vibrations that do not meet the terms of the directive. The company will now offer both an improved vibration dosimeter and a personal on-site service for those who are unsure whether workplace vibrations are still within the acceptable range.

Movito D vibration dosimeter is an improved version of the technology that has in the past been marketed under the name VibroControl. Its design and surface structure have been upgraded to make the device user-friendlier, and the software for capturing the data has been optimized.

The device, sales of which begin this year, is simply attached to the driver seat of a piece of construction equipment or tractor. It then continuously measures the vibrations to keep the user informed in real time of any hazards. A single battery charge is enough for at least 12 hours of operation, enabling straightforward recording of all vibrations occurring during the course of a workday. Any commercially available USB charger can be used to recharge it.

Data captured by Movito D is later transferred to a PC via an integrated USB interface, documented in an Excel spreadsheet, and then saved and archived for future reference. Integrated trend LEDs tell the driver about the accumulated vibration load and whether or not it has reached a health-endangering level. Visual and audible alarms go off if the permissible limits are exceeded. When the red LED lights up on Movito D, the operator has been exposed to excessive vibrations.

Under the name Movito S, Grammer offers an optional service in which a specially trained Grammer employee travels to a worksite to perform further, standardized measurements. The specialists look at all work routines under actual conditions. All jolts and vibrations are taken into consideration; the data is transferred to a laptop and analyzed so that the necessary steps can be taken to reduce the ascertained vibration loads.

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