I'm trying to calibrate a acceleromter on a DT80, the calibration certificate I have give the following information:

Sensitivity 11.40V/g @80Hz 
Bias voltage 5.7 volts 
Supply voltage 12V

I currently have it reading on a voltage signal.

Thanks,
Russell May

Hi Russell,

The DT80 is not a high speed data acquisition system. Generally it can't read an accelerometer unless it has an DC level (Usually RMS). To accurately record the wave form you would need to sample an 80Hz signal in excess of 1600 Hz which is far in excess of what the DT80 is capable of.

Cheers,
Roger

Roger.

I have a DT800 which I can use instead of the DT80. But I still have the issue with calibrating the accelerometer.

Thanks,
Russel May

Good morning Russell,

The bias means the zero point of the accelerometer will be at 5.7 VDC. If the sensitivity is 11.4 Volts per g then + 1 g will be 5.7 + 11.4 = 17.1 V; - 1 g will be 5.7 - 11.4 = - 6 V

Such a big output Voltage indicates that the accelerometer has a very small range. That is unless the output is mV Per g which is what I would have expected.

Cheers,
Roger