DORAN MODEL 8000
OPERATING AND SERVICE MANUAL
MAN0002-42 of 33
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Span should be adjusted to obtain a net change of approximately 18000 at dead load to
30000 internal counts at full capacity load by adjusting the span switches for the load
cell output.
6.5 DIGITAL CALIBRATION
Digital calibration is used to calibrate the scale indicator to the weight placed on the
platform and retain that data after the indicator is shut off.
6.5.1 Digital Zero Calibration
To perform a digital zero calibration:
1. Make sure that the scale platform is empty.
2. Press the ZERO button.
3. "ENT 0" displays signifying that the zero calibration has been entered.
The display will then display a zero weight( 0.000 ) reading with the left-most digit
flashing a letter "C" indicating that the 8000 is now ready for a span calibration.
If at any time error messages are displayed, which is a "Er" on the left of the display
followed by a three character code, refer to the error code table at the end of this
section for causes and remedies.
6.5.2 Digital Span Calibration
You must have an accurate test weight equal to at least 20% of your scale's capacity for
capacities less than 1000 pounds and 5% of your scale's capacity for capacities 1000
pounds and greater.
With the 8000 displaying "0" and flashing a "C" in the left-most digit:
1. Place the test weight on the scale platform.
2. The display will show a weight reading that should be near the test load value.
3. Adjust the weight reading so that it matches the value of the test weight.
4. Press ‘ZERO’ to increase the weight reading, or ‘TARE’ to decrease the reading.
5. Press ‘CONV’ to save the span calibration.
6. "Ent SP" will display for two seconds to indicate that the span calibration has been
successfully entered.
6.6 EXITING THE CALIBRATION MODE
6.6.1 Return to "User Set-Up Menu":
Press the ON/RESTART pushbutton to return to the "User Set-Up Menu" to review or
change configuration.
6.6.2 Return to weighing mode:
Flip the red-handled toggle switch (SW1) on the PCB back to its original position
(inboard) to go back into the weighing mode.
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