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11. AUTO-TARE FUNCTION
The SW series has an auto-tare function to be used with the comparator mode enabled.
Using this function in check weighing, the scale automatically tares, then displays “OK”
for a certain amount of sample and repeats this process for the next weighing.
Start with display zero after tare operation. Place or take away objects until the
comparison result will show OK. When the stable display is maintained for the duration
specified in the function setting
“
at-t
”,
the scale will automatically tare the weight,
show zero and be ready for next weighing.
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.
Take-away check weighing “
Cp-p 1
” (Example with “
Cp-l 0
” setting)
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
key to tare
the weight of the container filled with objects. The
ZERO
key 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
key. 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, press the
ZERO
key to clear the tare weight.
If the scale is equipped with the optional RS-232C serial interface (SW-03) or optional
RS-422/485 serial interface (SW-04), the OK weighing data only can be output
automatically. Set the function setting “
prt 5
”.
