I am using IIS3DWB accelerometer for condition monitoring. In order to offset DC I intend to use HP filter ODR/800 which gives me high pass cutoff 33Hz. I wonder how to capture frequencies for a range below 33.3Hz (equipment running at 1500rpm (25Hz)?

[AGosw.3]

I intend to use IIS3DWB accelerometer for machine vibration monitoring. In order to offset DC I intend to use HP filter ODR/800 which gives me high pass cutoff 33Hz. I wonder how to capture frequencies for a range below 33.3Hz (equipment running at 1500rpm (25Hz)? If I don't use HP filter, there is always DC component. Is there any way to capture low running frequencies while applying HP filter too?

[tlifschitz]

Hi, if your only concern is the DC component you may compute it and substract it from the measurement in the firmware, without need of using a HPF