20
Select the conversion you wish to modify and press ENTER. Use ACTV to activate/deactivate it, DPNT to change its decimal point
location and CNT to change what the least significant
displayed digit will count by. In the pounds configuration (the scale’s native
conversion unit) you can use OVRL to set the overload limit in pounds.
When setting resolution (DPNT and CNT) care must be taken not to exceed 5000 total displayed counts or a drifting reading may result.
The maximum resolution is setup by default by auto setup but can be calculated easily by taking the scale’s maximum capacity
and
dividing it by 100,000. For example, a 50-
pound scale’s resolution should be .01 pounds (50 / 100,0
00 = 0.0005).
CAP Zero
One of the sensors equipped in the scale is called a Capacitor Sensor. Sometimes, this sensor loses its Zero Reference value due to a
sudden change in environmental conditions or unexpected user interaction with the scale. This selec
tion performs what’s termed as
“Capacitor Zero” oper
ation of the scale. It basically restores the Zero Reference point of the Capacitor Sensor. This operation is useful
when the scale is not behaving properly and not weighing properly. When experiencing problems, if
SAW Correction
does not fix the
issue, then CAP Zero operation should be performed next.
Auto Zero
Auto Zero determines how the platform will zero on power up. The following selections apply.
Auto Zero
–
With this option selected, the scale will automatically zero out any weight on the platform. This is a good option for
environments that are not prone to power failures. Also, it is a great option if you always want to start the scale at zero regardless of
what the state of the platform (loaded or unloaded).
Last Zero
–
At initialization, the scale will zero out the platform to the last preserved zero state when the ZERO button was pressed.
This means that the scale remembers the last time the ZERO button was pressed. This results in the scale remembering the value of
the weight currently on its platform when the scale is shut off. In addition to that, suppose the weight was changed after the scale was
shut off, the next time the scale is turned out, it will show the new weight. This is an excellent option for environments prone to power
failures. It is also an excellent option if you need to constantly monitor the weight on the platform without interruptions.
None
–
The scale will initialize the platform based on its previous state. It is not a recommended to leave the scale in this option. The
scale may start up with an unknown state.
Filtering and Accuracy
Zero Tracking
A scale sitting for long periods of time without weight on the platform is prone to drift from zero due to temperature changes and a
number of other factors. Generally, this is not a problem and you can press the ZERO button to return the reading to zero before
weighing. Zero tracking, when enabled, will detect small reading changes over time and correct the platform back to zero.
There are four settable options on the setup screen. To modify them, use the left and right arrow keys to line up on the appropriate
entry in the horizontal menu located at the bottom of the screen, and then press ENTER. These menu items are as follows:
Active
–
ACTV: Activates or deactivates Zero Tracking.
Window
–
WIND: This is the window range above or below the current ZERO point that needs to be continuously compensated (up to
20% of full capacity) to correct zero shift. For example, over two days, you notice that the scale has shifted in weight by 0.2lbs, even
though there is no weight on the platform (and was originally reading perfect 0) or a weight that was constant over two days is now
reading 0.2lbs over
. This is known as “Zero Shift” and can be corrected using Zero
Tracking. After studying the scale’s behavior on this aspect, we can plug this 0.2lb range in this Window field. Now you will
notice that
your scale will zero out any deviations that falls within ±0.2lbs.
