Flintec FT-11D - Manual (Page 20)

FT-11(D) Technical Manual, Rev. 1.35 November 2010 Page 20 of 52
new value by <Tare> and <Zero> keys, place the test weight on the scale and press <Enter>. The display
will show the [WAıt ] message during the span adjustment under load. Approximately 10 seconds later
the display will show the [SAvE ] message. You can confirm the “Save span adjustment under load” by
pressing <Enter> or cancel it by pressing the <F> key.
[313 ] eCal (electronic calibration)
Warning: The scale capacity and the resolution must be entered before performing eCal.
This parameter allows to calibrate the scale without using test weights. Based on scale capacity, total
load cell capacity, load cell rated output and estimated preload FT-1x calculates the calibration
coefficients. If the conditions are convenient for zero calibration, you may perform automatic zero
adjustment instead of entering estimated preload.
For maximized eCal accuracy the A/D coefficients of the instrument are adjusted in the factory.
Press the <Tare> key to enter eCal.
[LC.CAP ]
[ XXXXXX ]
Enter the total load cell capacity in [kg] via <Tare> and <Zero> keys and press
<Enter> to go to the next step.
Example : If the scale uses 4 load cells with 1000 kg maximum capacity for each,
then enter 4000.
[LC.oUt ]
[ XXXXXX ]
Enter load cell’s rated output in [mV/V] via <Tare> and <Zero> keys. If the scale
uses more than one load cell, then calculate the mean value of all load cells’ rated
output as indicated in their certificates. Press <Enter> to go to the next step.
Example: If the load cell’s rated outputs are LC1: 2.0010, LC2: 1.9998, LC3:1.9986
and LC4:2.0002, then the mean value will be
Mean LC output = ( 2.0010 + 1.9998 + 1.9986 + 2.0002 ) ÷ 4 = 1.9999 mV/V.
[rt.oUt ]
Enter load cell’s rated output in [counts] via <Tare> and <Zero> keys (200 000 is
default setting). Press <Enter> to go to the next step.
[ZEr.AdJ]
[ XXXXXX ]
If the scale is empty and you want to make an automatic zero adjustment instead of
entering the estimated preload (see next step), press the <Enter> key.
When the message [Zero.CA] appears then press the <Enter> key for starting the
zero calibration. The display will show the [WAıt ] message during zero adjustment.
In this while the scale must be unloaded and stable. Approximately 10 seconds
later the display will prompt you to save the calibration by the [SAvE ] message
(see below). If the scale is not empty or you prefer to enter the estimated preload
value, press the the <
> or <> key.
[PrE-Ld]
[ XXXXXX ] Enter the scale’s dead load value in [kg] by using <Tare> and <Zero> keys.
Press <Enter> to go to the next step.
Hint: Is the deadload not exactly known, then you should enter „0“ for this
parameter. After save and restart of the weighing function the following weighing
result is identical to the real deadload value of the scale. Note this value and repeat
the eCal procedure with a known deadload value.
[ SAvE ]
Save this eCal calibration by pressing <Enter> OR
press the <F> key to quit without saving this eCal calibration.
Note: If you want to make a zero adjustment after entering the estimated preload value, empty the scale,
change the preload value to (estimated value + display value at zero load) or enter parameter 310 for
zero adjustment.