User guide

25
Operation
Menu Reference
After entry of the correct passcode and the
is pressed, the
calibration
selection menu will appear as shown below:
The
key can be used to select between the USER and FACTORY
calibrations. The selected calibration is retained between power-ups of the
instrument.
If a
USER calibration has never been performed (which is the default state
from the factory), then the first time the USER calibration is selected the
user will be presented with the following screen:
In order the complete the
USER calibration,
the user should verify that all sensing
elements of the installed AMI sensor are
connected and
are in an identical media
.
Once the
key is pressed (the user
may also exit at this point by pressing the
key and no calibration will be
performed) the Model 187 will display the
calibration progress, automatically exit the
CAL menu, and begin measurements using
the new USER calibration.
Note
If all sensing elements of the AMI sensor are
not in the identical media, the calibration
will be inaccurate and result in errors in the
measured liquid level. AMI performs and
recommends all user calibrations be done in
air or other non-stratified gas with a
dielectric that approaches 1.0.
The USER calibration can be re-performed by first selecting the USER
calibration in the calibration selection menu, and then pressing the
key. This will present the “
Press <ENTER> to Initiate Cal
” prompt and
again perform a USER calibration once the
key is pressed.
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ALL SENSING
ELEMENTS MUST
BE
IN IDENTICAL MEDIA
FOR PROPER USER
CALIBRATON