Maguire Products GRAVIMETRIC AUGER FEEDER MGF-ST, Instruction Manual

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M A G U I R E P R O D U C T S , I N C .
26
G R A V I M E T R I C A U G E R F E E D E R

Scale Calibration
Periodic zero and full calibration ensures that the MGF is weighing correctly. Calibration is also
necessary if a load cell is replaced or if the controller is replaced. Before doing a calibration, you
will need a known weight that can be rested on top of the hopper lid. The known weight must
weigh approximately 4000 grams and you must know exactly how many grams it actually weighs.
This weight in grams will be entered into the MGF. Confirm the following:
Confirm the material hopper is EMPTY.
Confirm the load cell connector is plugged into the side of the controller.
Confirm the LOADER material hose is connected to the hopper lid.
How to Calibrate Load-Cells:
Press
Display will prompt for a password.
(admin default: 22222)
Then press:
Press
MGF Configuration
Display will show the MGF Configuration categories.
Press
Calibration Routines
Display will show 3 calibration routines, Calibrate Motor Rate,
Calibration Voltage, Calibrate Load-Cells.
Press
Calibrate Load-Cells
Display will show the Zero/Full Weight Calibration Screen
Confirm
Material Hopper is empty, load-cell connector is plugged in and Loader material hose is
connected t the hopper lid.
Press
ZERO Display will show:
Zero Calibration Successful
Current Weight should now show 0 grams.
(slight deviation from zero is acceptable)
Press
FULL Display will show:
Enter known weight then press ENTER.
Using the keypad, enter the weight in grams of your
calibration weight, then press the ENTER button.
Place calibration weight on top of hopper lid. For best accuracy center the weight on hopper lid.
Press
CONTINUE Display will show:
Full Calibration Successful
Press
EXIT
To exit the load-cell calibration screen.