Ecal Procedure; Weight Factor; Chain Factor - MERRICK Genetix Safety, Installation, Operation And Maintenance Manual

To accept the results of this procedure, press the Enter key. If you do not wish to
accept the results, and leave the Scale Factor value un-changed, press the Menu/Esc
key.
Whichever key is pressed at this point, you will be returned to the Material Test
screen so that you may easily run another procedure if desired. It is recommended
that you run more than one test to verify that the feeder is repeatable.
Note: It is also possible to use the Material Test procedure to directly affect a change
to the Calibration by entering numbers for both parameters that you select. You may
enter arbitrary values for both "GCM Total" and "Actual Total" and run the procedure.
The error displayed is calculated as follows:
Error, % = (GCM Total – Actual Total) / Actual Total x 100%
So, if for example you believe the Genetix is reading 1% low, you can correct it
directly by selecting appropriate numbers and running the Material Test procedure. In
this example a set of numbers can be selected by entering a GCM total that is exactly
1% lower than the Actual total, for example GCM Total = 198, Actual Total = 200.
(Note: All numbers must be greater than 100).
After you run the procedure and accept the results the Genetix should now agree with
your reference.

ECal Procedure

(Main Menu > Calibration > ECal Procedure)
This procedure allows you to "span" the feeder calibration without having to use
weights, a test chain or any other kind of load. Instead a calibration is performed
based on the electrical signal that should be present under a given load. Before
performing this procedure this value must be calculated ahead of time and entered in
the Genetix controller (see Main Menu > Calibration > Numeric Data > ECal Value).
To perform this procedure, select it from the menu by pressing the Enter key.

Weight Factor

(Main Menu > Calibration > Weight Factor)
This procedure will calculate and store a new gravimetric Weigh Span (see Main
Menu > Calibration > Numeric Data > Weigh Span) and should only be performed
after an accurate Material Test (see Main Menu > Calibration > Material Test) or
Chain Procedure (see Main Menu > Calibration > Chain Procedure). It is performed
with Test Weights, exactly like a Weight Procedure.
Once the test is complete, and accepted, a change is made to the Weigh Span; it
does not change the calibration (i.e. Scale Factor) of the feeder.

Chain Factor

(Main Menu > Calibration > Chain Factor)
This procedure will calculate andd store a new Test Chain value (see Main Menu >
Calibration > Numeric Data > Test Chain) and should only be performed after an
accurate Material Test (see Main Menu > Calibration > Material Test). It is performed
with a Test Chain exactly like a Chain Procedure.
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