FT-111, User Manual Rev. 2.0.0, June 2022 Page 68 of 137
8.6 CALIBRATION
Please read this document carefully and select the parameter values which will fit your application before
programming the instrument
Warning
:
You cannot change the legally related parameter values and calibration after sealing the
instrument in legal usage. Be sure you have done the proper adjustments before sealing the scale.
Scale definition
Before the calibration can be performed the capacity and resolution of the scale must be defined.
Press key at the [ 523 MAX / d] prompt and set the required capacity and resolution of the scale.
Then continue with the following:
Calibration involves emptying the scale then placing a known test weight on an empty platform and allowing
the FT-111 to capture values for zero and span. Calibration is performed as;
1. Press key at the [ 611 TEST WEIGHT ] prompt to start the calibration.
2. At the [ UNLOAD THE PAN] prompt, remove any weight on the platform, then press key.
3. The terminal automatically starts to capture zero and the [ WAIT ] message appears during zero
adjustment.
4. The test weight value will be used for the calibration is seen on the display as [ LOAD THE PAN ] [
XXXXXX ] after zero adjustment. Enter the test weight value via keys. A minimum test load
requirement is 20% of scale capacity for accurate calibration; FLINTEC recommends test load
between 50% to 75% of the capacity.
5. Place the test weight on the scale.
6. Press key to start span calibration. [ WAIT ] message will be shown on the display 10 seconds
while span calibration is being performed.
8.6.1 Linearity Correction
Because of the load cell non-linearity or mechanical scale hardware, you may see nonlinearity on the scale
performance. Multipoint calibration in this parameter improves the scale performance.
1. Press key at the [ 612 LINEARIZATIO ] prompt to start the calibration.
2. At the [ UNLOAD THE PAN] prompt, remove any weight on the platform, then press key.
3. The terminal automatically starts to capture zero and the [ WAIT ] message appears during zero
adjustment.
4. At the [ LOAD 1 ] [ XXXXXX ] prompt, the test weight value to be used for the first step
calibration is seen on the display. A test load requirement is between 35% to 60% of the scale
capacity.
5. Place the test weights or another practical weight on the scale and enter the test weight value via
keys
6. Press key to start span calibration. [ WAIT ] message will be shown on the display 10
seconds while the first span calibration is being performed.
7. At the [ LOAD 2 ] [ XXXXXX ] prompt, the test weight value will be used for the second step
calibration is seen on the display. Use the test weight equal to at least 90% of the scale capacity,
preferably to the scale capacity
8. Place the test weights or another practical weight on the scale and enter the test weight value via
keys.
9. Press to start second step span calibration. [ WAIT ] message will be shown on the display
10 seconds while the span calibration is being performed.
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