Specifications

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3BUS 208 000 R1301132 Measurement Setup
Standardize Limits
Standardize limits are entered via the Standardize Limits tab on each Health Report.
General Information
There are a number of options and scenarios available which control how the
standardize feature is to be operated. These are:
• Time interval between standardizes
• The selection of CLEAN or DIRTY standardize modes
• Standardize delay after long off-sheet periods
• Reporting of "internal" check sample during standardize
Time Interval between Standardizes
The time interval between standardizes is generally controlled by the host computer,
except for AccuRay Direct systems. A minimum time interval should be 30 minutes.
On AccuRay Direct systems, the interval is controlled by an instance variable called
stdzPeriod, located in each of the sensor objects present in the system. If any of the
sensors have a non-zero value in this variable, that value will be used to establish
the standardize interval. For AccuRay Direct systems interfacing with a foreign
DCS (not Smart CD to an 1180M), only one sensor needs to have an interval defined
since one serves all. On AccuRay Direct systems, the default time within each
sensor is set to 60 minutes. For AccuRay Direct connected to an 1180M via the
Smart CD interface, the value for the stdzPeriod in each sensor should be set to zero
if the interval being scheduled by the host is greater than 60 minutes. If it is less,
then no change is required since the most frequent interval prevails.
The Selection of CLEAN or DIRTY Standardize Modes
CLEAN and DIRTY standardizes are selectable from the host computer (1190 and
1180M) and can be either manually requested or defined at the time of automatic
standardizes. Of all the sensors available in the system, only Basis Weight, GT
Caliper, and OptiPak (FOB) have any sensitivity to what mode of standardize has
been selected. It is possible to have one of these sensors responding to a DIRTY
standardize request while the others are held to doing only CLEAN standardizes.
As an example, in a system with both Basis Weight and GT Caliper, it may be
desirable to have the Basis Weight sensor only doing CLEAN standardizes while
the GT Caliper must be doing DIRTY standardizes due to the environmental aspects
of the paper machine. In this case, the host would be set up to request DIRTY
standardizes while the Basis Weight sensor on the Scanning Platform is set up to
do a CLEAN standardize every time a DIRTY one is requested. In all cases after
a system reset, regardless of how the various CLEAN/DIRTY flags are set, the
system will force a CLEAN standardize on all sensors which require one. The
CLEAN request will continue until all of those sensors have passed their initial
standardize.