A&D Weighing SJ-30KWP - Manual (Page 17)

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9. AUTO-TARE
The SJ-WP series has an auto-tare function to be used with the comparator mode
enabled. If the weight values are in the OK range of comparator limits and stable for a
preset period of time, the scale will automatic 1 ally tare the weight and show zero.
In some countries or areas, the auto-tare function can not be used on the Legal for Trade
models and the selection in the function settings “ at ”, “ at-t ” and “ at-f ” is not available.
To use the auto-tare function, set the function settings below.
Cp 1: Compare all weighing data (other settings may be used depending on
the application).
at 1: Auto-tare function enabled.
at-t 0 ~ 9: Select the timing to tare automatically to avoid the wrong tare operation, for
example; too early to tare, to take a longer time to go to the next weighing.
Normal comparion “ Cp-p 0 ”
Start with display zero after tare operation. Place or take away objects until the
comparison result will show OK. When the stable indicator is ON for a the preset
period of time specified in the function setting “
at-t ”, the scale will automatically
tare the weight, show zero and be ready for next weighing to repeat.
Negative comparison for take-away “ Cp-p 1 ” (example with “ Cp-l 0 ”)
Take-away check weighing (negative comparison) is the way to compare the
negative weight while taking away objects from a container.
Set the function “
Cp-p 1 ” together with the auto-tare function enabled “ at 1 ”. In this
operation mode, the scale operates as “take-away the objects” “OK and stable”
“auto-tare” “take-away the objects” ······.
In this setting, the polarity of LOLO, LO, HI, and HIHI limit values are ignored and
the scale shows the comparator results as below.
Note: To start the take-away check weighing, be sure to use the TARE switch to
tare the weight of the container filled with objects. The ZERO switch may zero
the display, and the scale goes below the zero point by taking out the objects.
Then, the auto-tare function does not work.
When the function “ at-f 1 Tares the initial (container) weight.” is selected:
To start the auto-tare function, usually the container (filled with objects) will be placed on
the weighing pan and its weight must be tared using the
TARE switch. When the
function “ at-f 1 ” is selected, the scale will tare the initial (container) weight automatically.
When all load on the weighing pan is removed, the scale will return to the zero point
and the tare weight will be automatically cleared. If the scale does not return to the
zero point, tap the
switch to clear the tare weight.