Measurement and evaluation of vibration sensors measure vibration

Vibration is a harmful production factor, therefore it must be controlled, so it does not exceed the allowable level. For this purpose measurements and the assessment of vibration.

Measurement vibration at the workplace must be carried out using the refrigerators. Their functionality will ensure the objectives of this standard. If this will not be enough, used a complex measuring system with frequency analysis in order to obtain additional data to reduce the current vibration.

From environmental conditions, range of frequencies and amplitudes of vibration, physical characteristics of the surface depends on the choice of the sensor. The device must to provide measurement of peak vibration acceleration and vibration at low frequencies. When choosing a machine to measure vibration, consider the sensitivity its conversion factor to different factors (temperature, humidity) of the environment.

Sensors measurements need to install the contact areas of the human body vibrating equipment surface. If you want to install a few instrument in single point measurements (for the implementation of measurements in different directions), the device should be placed as close as possible to each other.

If the person works in a sitting position, the vibration measured on the seat surface. If the work is done on the feet, vibratory run on the surface employee employee support. Point vibrometry is extremely close the area in which the contact legs of the person support surface. If the person is worth it, this area is within a circle (radius 100 mm), the center of which coincides with the center of the contact region. If a person is sitting, the area required to be as close as possible to the middle of the foot.

After measurements, a Protocol test, where to put them:

· Data of a General nature;

· Information about the equipment;

· Measurement means;

· Information used in selection of workers cycles, during which performed vibration measurements;

· Photo of the day, when were operations;

· Conditions of carrying out the measurement of vibration and its results;

· Assessment data equivalent vibration acceleration:

Common the duration of vibration exposure during the work shift need to for each operation. The estimated duration is based on the real measurement duration of exposure to vibration during the implementation of specific operations or information on the number of operations performed during shift.

The first goal measurements – determination of duration of vibration exposure on the operator in a certain time period. Second the goal is to establish source of vibration. Methods of use may be different:

· Timing using a stopwatch;

· Analysis of the video recording process;

· Fixation activities of the operator in a selective moments.

Source the required data is the work log. In particular, it is possible to learn about the number of loaded/unloaded trucks (per day, work shift) the use of a forklift. Or to obtain information about the number products processed by the end of the work shift (work day).

To conduct measurement and evaluation of vibration you can use the series "VibroPoint" from BALTECH. For learning work with the pastries is enough to visit our "Training center of training and of training", where training courses on the rules of measurement vibration with refrigerators and vibration analyzers (analysers).