Flintec FT-15D - Manual (Page 29)

FT-15(D) Technical Manual, Rev. 1.02 August 2010 Page 29 of 52
9.5 Scale Calibration
[3--] Calibration Block
The calibration of the scale will be performed here.
[30-] Calibration
[300 ] Gravity (for FT-15 only)
This parameter should be used in the scale that will be verified in two stages by gravity adjustment (in legal
metrologic applications). This parameter should not be touched in other applications.
If you enter a value in this parameter before calibration (as six decimal digits, e.g. enter “798564” for “9.798564”), this
value will be assumed as the reference gravity acceleration where the initial calibration has been performed. After the
initial calibration this parameter will be automatically set to “0”.
If the value of this parameter is “0” this means no gravity adjustment has been performed after the initial calibration.
In the second stage of the verification the gravity acceleration of the place where the weighing indicator will be used
should be entered (as six decimal digits, e.g. enter “800065” for “9.800065”).
Exit setup by saving the changes without entering the calibration (parameter [301]).
[301 ] Calibration with Test Weights
Begin the calibration by pressing <Enter>.
Unload the scale when the displays shows [ZEro.CA] message and press <Enter>.
The display will show the [WAıt ] message during the zero calibration. In this period the scale must be
unloaded and stable.
Approximately 10 seconds later the display will show [LoAd ] and then [ XXXXXX ].
The value shown on the display is the weight that should be used for the span calibration. If the value of
the test weight which will be used is different from the value shown on the display, type the new value by
<Tare> and <Zero> keys, place the test weights on the scale and press <Enter>. Any test weight should
be at least 10% of the scale capacity or higher.
The display will show the [WAıt ] message during the span calibration. Approximately 10 seconds later
the display will show the [SAvE ] message. You can save the calibration by pressing <Enter> or quit
without saving by pressing the <F> key.
[31-] Adjustment
In this sub-block you can only perform zero adjustment or span adjustment without doing a full calibration.
[310 ] Zero Adjustment
This parameter is only used for refreshing the zero level of the scale to prevent wrong weighings due to
zero drifts. Begin the zero adjustment by pressing <Enter>. Unload the scale when the displays shows
the [ZEro.CA] message and press <Enter> again.
The display will show the [WAıt ] message during the zero adjustment. In this period the scale must be
unloaded and stable. Approximately 10 seconds later the display will show the [SAvE ] message. You can
confirm the “Save zero adjustment” by pressing <Enter> or cancel it by pressing the <F> key.
[311 ] Span Adjustment
This parameter lets you perform the span adjustment. By pressing the <Enter> key [XXXXXX] appears on
the display. The displayed value is the weight that should be used for the span adjustment. If the value of
the test weight that will be used is different from the value shown on the display, then type the new value
by <Tare> and <Zero> keys, place the test weights on the scale and press <Enter>.
The display will show the [WAıt ] message during the span adjustment. Approximately 10 seconds later
the display will show the [SAvE ] message. You can confirm the “Save span adjustment” by pressing
<Enter> or cancel it by pressing the <F> key.
[ 312 ] Span Adjustment Under Load (for FT-15 only)
This parameter is being used to perform span adjustment of a scale without lifting the load from it. This operation is
especially used for span adjustment of filled tanks. You can make span adjustment without removing the load in the
tank.
When you press the <Enter> key the [P.ZEro ] message appears on the display. This means the scale will take the
current load as a temporary zero. After getting ready for this level, which means temporary zero adjustment, the
<Enter> key should be pressed. The display will show the [WAıt ] message during the temporary zero adjustment.
After this step the display will show [LoAd ] for a certain period and then [ XXXXXX ]. The value shown on the
display is the weight that should be used for the span adjustment. If the value of the test weight which will be used is
different from the value shown on the display, type the 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.