The CESVA VC431 is a triaxial vibrometer (in accordance with the regulation ISO 804) and an ideal instrument for field vibration measurements to assess risks arising from the exposure of workers to mechanical vibration.
The hand-held instrument is ideally suited to the field assessment of risks related to whole body vibration (WBV) due to it’s compact size and low weight, and ease of use.
The vibrometer has great storage capacity and saves the time history of all measurements. The vibrometer has USB connectivity and power.
The VC431 has a user-friendly iconographic display which simultaneously measures vibration in three axes and displays all relevant parameters for whole body vibration (WBV) exposure assessment of operators of mobile equipment for each measurement.
Figure 1: Results screen of the vibrometer for WBV data.
The functions available for WBV measurements are shown in the following table:
| Function | Description of WHOLE BODY (WBV) Mode functions | ||||||||
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| ahx | Rms value of acceleration in the x axis with Wh weighting | ||||||||
| ahy |
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| ahz |
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| ahv | Total value of acceleration | ||||||||
| A(8) | Daily exposure to vibration | ||||||||
| A(8)p | Projected daily exposure to vibration | ||||||||
| tp | Projection time (programmable) | ||||||||
| tn | Measurement time | ||||||||
The tri-axial accelerometer (AC033) is fitted within a rubber seatpad upon which the operator of the mobile equipment is seated, or may be strapped to the seat if more convenient or comfortable for the operator.
Technical specifications
IEPE triaxial piezoelectric accelerometer (bending design)
Sensitivity: 100 mV/g
Margin of frequencies (10%): 0.25 Hz at 4000 Hz
Operating margin: -10 at 50 ºC
Weight: 310 g (without cable)
Assembly: On seat or with strap
The CESVA Capture Studio software (included with the vibrometer) enables the measurements conducted with the VC431 to be easily downloaded via USB and the results analyzed quickly and simply.
Standards
ISO 2631-2
EN ISO 8041:2005 Vibrometer
ISO 8041:2005 Cor1:2007 Vibrometer
OIML R 103:1992 Vibrometer
