Does weight of an accelerometer have influence on the measurement result?

When acceleration measurement is performed with the lightweight object, weight of the accelerometer may influence on the measurement result. The characteristic frequency is represented as the following formula in simple method.

 

(Hz)

m : weight
k : constant of spring

 

Accordingly, the value "m" gains the weight of accelerometer by attaching the accelerometer to the measurement object so that it influenced on the frequency characteristic.

 

The weight of accelerometer must be under 1/100 or at least parts per several dozen for the weight of measurement object. When the weight of an accelerometer causes serious problem, we recommend non-contact measurement such as LV series leaser Doppler vibrometer and so on.

Revised:2002/08/19


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