Ronan X96S LEVEL GAGE - Manual (Page 18)

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Empty Clamp Menu
The X96S uses a mechanism called empty clamp to protect detectors (particular scintillation detectors) from saturation conditions
caused by the lack of process material to attenuate the radiation to the levels expected to be measured. The Min Counts and
Max Counts parameters sets the threshold (in raw counts
2 ) for activation of the empty clamp function. These Count values
should be set above (Max Counts) the Reference Counts, and below (Min Counts) the Calibrate Counts, and beyond your normal
measurement range.
The Empty Clamp menu is used to configure the parameters associated with the mechanism that shuts off power to the detector
if the detector receives more radiation than it is capable of measuring. It contains the following items:
ITEM FUNCTION
Empty Clamp
Enable / Disable
Shows the current state of the Empty Clamp mechanism (enabled or disabled) and
allows the user change the state.
Off Time Shows, and allows the user to change, the number of seconds that power to the
detector be shut off when the empty clamp mechanism activates before turning the
detector on to see if the radiation level has dropped to a value that the detector is
capable of measuring. Typical value ranges from 15 to 30 seconds.
Rcvry Time Shows, and allows the user to change, the number of seconds that power will be
applied to the detector when the empty clamp mechanism has activated to see if the
radiation level has dropped to a value that the detector is capable of measuring.
Typical value here is 30 seconds.
Min Counts Shows, and allows the user to change, the number minimum number of counts that are
used to determine that the detector is saturated (exposed to more radiation than it is
capable of measuring).
Max Counts Shows, and allows the user to change, the number maximum number of counts that are
used to determine that the detector is exposed to more radiation than it is capable of
measuring.
Alarm on Shows, and allows the user to change, the status of the 4-20 mA output during the
alarm. Options are 4 mA, 20 mA or clamp at the indication just prior to alarm.
Linearization Menu
The X96S is capable of performing a multi-point linearization of the level data when required by an application. The linearization
table contains ten entries, numbered 1 through 10. Each entry consists of a measured value, an actual value, and a flag that
indicates if the entry is used
3 .
The Linearization menu is used to control the linearization mechanism. It contains the following items:
ITEM FUNCTION
Linearize Shows the current state of the Linearization mechanism (enabled or disabled) and
allows the user change the state.
Clear Table This item invokes a method that clears all entries in the linearization table
Config Linearize Selecting this item takes the user to the Config Linearize menu
Config Linearize Menu
The Config Linearize menu is used to configure the parameters associated with linearization of the measured data. It contains
the following items:
2 The threshold is in raw counts since the overload is a function of the radiation effect on the detector and not related to any
corrected or converted data.
3 Not all of the entries need to be used and the entries do not need to be used in any particular order.