Wireless Sensor Device Manager
Expert Features in Device Manager
40
SKF Wireless Machine Condition Sensor
Service Manual
Calibration
Calibration is performed during manufacturing. If calibration is needed in the field, it is
important that velocity is calibrated first because the sensor simultaneously makes a
new calibration of the envelope based upon the “Pre-calibration factor” stored at
manufacturing time.
When the envelope is calibrated, a new “Pre-calibration factor” is calculated and stored
in the sensor, based upon the new calibrated values of velocity and envelope.
If you want to restore the original “Pre-calibration factor” stored
at manufacturing time, you must obtain that number and enter it
in
Calibration value
field. Click
Write Pre-Calibration
to restore
this value.
How to perform velocity calibration:
Deselect the
Use Cache
check
box in the gateway’s
Admin
tab
to disable the automatic data
collection function.
Set the sensor on a shaker
table.
Apply the velocity calibration
reference at 138 mm/s @
80 Hz.
Enter the velocity reference in
the
Calibration value
box.
Click
Perform Velocity
Calibration
. Wait 50 seconds
for the calibration to take effect.
Apply a different frequency and
amplitude setting on the shaker.
For example, 10 mm/s at
700 Hz.
Manually take an overall reading
to verify the velocity calibration
is okay. The overall velocity
should be between 8.88 to
10.86 mm/s.
Enter the calibration date in the
Date
fields.
Enable the
Use Cache
function
when calibration is complete.
WARNING! Do not modify the Final Assembly Number (FAN).