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Weightec 348 Manual

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2.6 SETPOINT FILTERS
Via setpoint start command : - Inflight filter, for the setpoint comparison only, accelerates continuous and
automatically the cut off of the setpoints, controlled by continuous measuring
of the speed of the weight increase.
Resulting in a decrease of overshoot risks at high speed dosing
- Impulse filter, for the setpoint comparison only, up to max 5 Hz ripple
2.7 NO MOTION DETECTOR
Principle : Continuous calculation of the averages of swingings.
Out of these averages the rate of no motion is calculated. Two levels ( high
and low) of no motion are detected. High level is used for zero setting, low level
for taring operations. The auto adaptive filter is also controlled by this
calculation.
At “stand still” the adaptive filter suppresses the swingings around the
calculated no motion weight value.
2.8 ZERO SETTING switch 5: ON = automatic zero setting at switching on: “auto zero”
Range at “switching on” : - In legal mode: - 5% . .+ 15% of the nett weighing capacity (overload setting)
- In not legal mode: - 20% . .+ 80% of the nett weighing capacity (overload)
Range at “in operation” - 1.3% . . . + 2.7% of the nett weighing capacity (overload setting)
Lock up : If the zero value is outside the ranges, no zero setting will be executed.
In character 12 of the data string a warning is sent. The internal display shows
a: Z .. . De last used zero value may be requested from the 348 for checking,
with the string: X ? Z .
Manual zero setting : set switch 5 off / on
External zero setting : with command via data input: X ! Z CR
Delete zero memory : set switch 4 and 5 both off, the zero track will be deleted too
2.9 ZERO TRACK switch 4: ON = continuous automatic zero setting
Range : - 1.3% . . . + 2.7% of the nett weighing capacity (overload setting)
Principle : Small deviations from the gross or net zero, < 0.5 scale division and
not faster than 0.5 division per second, will be reset to zero automatically
2.10 CALIBRATION DISPLAY
Design : Internal 2- lines dot matrix LCD display with back lightning
Reading : - gross en net weight values with x 10 improved accuracy
- status indications as : no motion, taring or zero setting in operation
- error messages
- basic info during start up procedure as : serial nr, checksum, AD value,
loadcell excitation voltage, internal temperature etc.
Manual 348-2 V 3.1 Page 8 01-06-2007
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