Ronan X96S DENSITY GAGE - Manual (Page 18)

Density Gage Manual 012407 14
Operation Menu
The Operation menu is used to access the menus and variables that control the processing of the density data. It contains the
following items:
ITEM FUNCTION
Filtering Selecting this takes the user to the Filtering menu
Empty Clamp Selecting this takes the user to the Empty Clamp menu
Detector Fault Selecting this takes the user to the Detector Fault menu
Linearization Selecting this takes the user to the Linearization menu
Temp Comp Selecting this takes the user to the Temp Comp menu
Pressure Comp Selecting this takes the user to the Pressure Comp menu
Scan Time Shows the amount of time to accumulate each density sample and allows the user
change the time value.
Filtering Menu
The Filtering menu is used to configure the parameters associated with the mold level measurement filter, utilizing the
standard scan rate. It contains the following items:
ITEM FUNCTION
Dyn Track Shows the current state of the dynamic tracking filter (enabled or disabled) and allows
the user to change the state
Sigma Shows the (sigma) multiplier used to determine maximum number of raw count
variation (for scintillation) or raw analog value (for ion chamber) that the input can
vary from the current filtered counts before changing to the dynamic filter. Sigma is
the square root of the current filtered counts. Also allows user to change this number.
Fast TC Fast Time Constant value to be used when the Fast Counter reaches zero
Fast Counter Shows the fast count down counter value. If gage has been in dynamic tracking long
enough to be using Medium filter and the raw counts continued to exceed the sigma
value, the fast counter value is decreased each consecutive scan. The Fast counter
value resets and returns back to the original value if the raw counts do not continue to
exceed the sigma value. Once the Fast TC is triggered, it will continue to be used until
the counts are within the sigma value for the Fast counter number of times
consecutively. Also allows user to change this number
Medium TC Medium Time Constant value to be used when the Slow Counter reaches zero
Slow Counter Shows the slow count down counter value. If gage is in dynamic tracking, and the raw
counts continue to exceed the sigma value, the slow counter value is decreased each
consecutive scan. The Slow counter value resets and returns back to the original value
if the raw counts do not continue to exceed the sigma value. Also allows user to
change this number
Slow TC Slow Time Constant value to be used if the Slow Counter has not reached zero
Noise Filter Shows the maximum number of potentially erroneous measurements in a row to
bridge before deciding that a step change has occurred in the mold level value. Also
allows user to change this number. Erroneous measurement is defined when the raw
signal is 4 times the pre-selected sigma multiplier
Monitor Shows the current state of the filtering mechanism
Monitor (filter state) one of the following:
ITEM MEANING
ERROR Filter is not initialized (this state should not occur during normal operation of the
X96S Density Gage)
FILL The walking average buffer is filling
TRACK The walking average buffer is filled and the filter is tracking changes in the density
value
REFILL A step change has occurred and the walking average buffer is refilling