Converting dB to acceleration
Converting dB to acceleration
(OP)
Hello
I recently measured vibration with a sound level meter (Norsonic 121 and accelerometer). The sound level meter only shows me values in dB. Can anyone tell my how I can convert the values to acceleration (or displacement)?
Thank you for your help.
I recently measured vibration with a sound level meter (Norsonic 121 and accelerometer). The sound level meter only shows me values in dB. Can anyone tell my how I can convert the values to acceleration (or displacement)?
Thank you for your help.





RE: Converting dB to acceleration
Sadly there are many more standards than that.
Once you know this then
acceleration = Accref*10^((dB-dBref)/20)
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Converting dB to acceleration
dB = 20 log (1.9E-06/.95E-06) = 6 dB
So an accel of 1 g would read 6 dB.
There appear also to be different gain ranges for the meter. You'll need to take those into account also.
Make sure the electrical guys here check my numbers!!