FT-111(D) Panel Weighing Indicator, Technical Manual, Rev.1.0.0, May 2019
Page
69
of
146
eCal Electronic Calibration
IMPORTANT NOTE: The eCal electronic calibration is based on the zero adjustment by entering the dead
load value or automatic zero adjustment and span adjustment by entering the load cell data.
WARNING :
If the primary unit is no kg, the selected unit should be saved by exit from set-up and then
perform e-Cal.
1. Full calibration cancels the eCal performed before.
2. Span adjustment is cancels the eCal performed before.
3. Gravity adjustment cannot be done after eCal.
4.
“Span adjustment under load“ cannot be done after eCal.
5. Shift adjustment cancelled the eCal performed before.
This parameter lets you to perform calibration without using any test weights. A/D coefficients of the indicator are
adjusted in production for increasing eCal accuracy. The calibration coefficients are calculated by scale capacity,
total load cell capacity, load cell full scale output and estimated dead load. If the conditions are convenient for zero
calibration, you may perform automatic zero adjustment instead of entering estimated preload.
[TOTAL LC CAPACIT ] ( only FT-111 )
[XXXXXX]
Enter total load cell capacity via pressing
key to increase or press
key to decrease the blanking digit
and press or key to select digit and press
key to go to the next step.
Example : If the weighing system has 4 pcs 1000 kg load cell, enter 4000.
[AVARAGE LC OUT ] ( only FT-111 )
[XXXXXX]
Enter load cell output in mV/V via pressing
key to increase or press
key to decrease the blanking digit
and press or key to select digit. If the weighing system has more than one load cell, calculate the mean
value of load cells outputs mV/V indicated on the certificates of the load cells. Press
key to go to the next
step.
Example: If load cell outputs are LC1: 2.0010, LC2: 1.9998, LC3:1.9986 and LC4:2.0002, the mean value will be;
Mean of LC outputs = ( 2.0010 + 1.9998 + 1.9986 + 2.0002 ) ÷ 4 = 1.9999 mV/V.
[ZERO ADJUST ]
If the scale is empty and you want to make automatic zero adjustment instead of entering estimated dead load (
look next step ), press
key appears [ UNLOAD THE PAN ] and press
key to start zero calibration after
unloading the scale. The display will show [ WAIT
] message during zero adjustment. In this while the scale must
be unloaded and stable. Approximately 10 seconds later electronic calibration is performed.
If the scale is not empty or you prefer to enter estimated preload value, press the
key before pressing the
key.
[ESTIM DEAD LOAD]
[XXXXXX]
Enter the dead load value of the weighing system in current unit by related keys. Press the
key to go to the
next step.
Notes:
Dead load correction: You may change the dead load value after testing the scale and adding the displayed gross
weight value of unloaded scale to the dead load value. Do not press
key after switch on the instrument after
calibration, and the power on zero and automatic zero tracking should be disabled to determine the dead load
error.
Dead load value is cancelled after automatic zero adjustment.
