BTEK T419S, Service Manual

Page: 36 / 136

36 T419S Indicator Service Manual
6 ADMIN Menu
6.2.5 AZT
This stands for Automatic Zero Tracking. The Div value defines a ± range around zero.
When scale weight is not at the center of zero but inside this range for the time value
entered, ½ of the weight will be subtracted. This process is repeated until weight is
inside the center of zero region.
Div Set the AZT window size to define stability. 3 divisions is the default value.
Set
Div to 0 to disable AZT.
Time Set the time window in seconds. 1 second is the default value. Set to 0 to
disable AZT.
6.2.6 Filter
Use this to filter out vibrations affecting the scale. Under this item you have the
following three parameters to set.
Avg This stands for average. 10 is the default value.
Const This stands for constant. 1 is the default value.
T-hold This stands for threshold. 100 is the default value. When 0 is the threshold
value, filtering is always on.
To find the best settings for your filter needs, follow steps 1 to 7 .
1. Using the Threshold setting is only recommended if the items to be weighed are
similar in weight. If the item weights vary considerably then set the threshold
value to 0 and proceed to step 2.
To determine the threshold value first set T-Hold to 0.0, Const to 0, and Avg to
1.0. Return to weigh mode and, with a typical item on the scale, observe the
weight swings. Record the difference between the highest and lowest displayed
weight values. Add 30 to 50% to this value. This is a good starting value for the
T-Hold s etting. Do not set your indicator to this value until told to in step 7 .
2. Setting Avg to higher values increases the filtering effect.
To do this: Set T-Hold t o 0.0, Const to 0, and Avg to 10. Check the stability of
the scale by exiting to normal weigh mode, remove all weight from the scale
and/or press
ENTER and observe the Center of Zero annunciator. If it is on all
the time your scale is stable. If the Center of Zero light blinks, more filtering is
required. Go to step
3 .
Default settings are:
AVG = 10
Const = 1
t-hold = 100 (factory default based on 5000 lb capacity)
These values will provide the best weight response for the majority of scale
installations. In adverse conditions, where wind, vibration or other conditions are
affecting the stability of the weight displayed, refer to the following instructions to
improve the performance of the indicator.