7000 SERIES INDICATORS
EN 35
Linearity Adjustment
Select if a linearity adjustment will be used during calibration. Selections are as follows:
Disabled
– Use only zero and one span point
Enabled
– Use zero, mid span point, and high span point
Set Zero
The Set Zero function in the Calibration setup triggers an independent operation to reset the zero condition of the
scale. A status message displays when this function is accessed that directs the user to empty the scale and press
the
ENTER
key. The status of the capture zero operation displays. When the operation is complete, a final status
message displays that verifies the completion of the capture zero operation.
If motion is present during the zero capture process, the indicator will average the weight readings then display
a message indicating unstable weight values were used. This message must be acknowledged to save the
values.
Set Span
The Set Span function in the Calibration setup initiates a sequence to capture span that can be performed
independently of capturing zero.
To capture span:
1.
With focus on the Set Span label, press
ENTER
. The Capture Span setup screen displays
2.
Enter the weight for test load 1 (and test load 2 if linearity has been enabled). Press the
ENTER
key
3.
Place test load weight 1 on the scale.
4.
With focus on the Place xxxx, press
ENTER
text, press the
ENTER
key. The status of the weight capture
operation displays. When the operation is complete, a status message displays that verifies the completion of
the weight capture.
Press the
LEFT
navigation key if the calibration process must be aborted and the display will return to the
previous screen.
5.
After the first calibration step has completed, the menu will either display a prompt for the next calibration
weight to be added (if linearity adjustment parameter is enabled) or will show a successful or failed calibration
sequence
If motion is present during the span capture process, the indicator will average the weight readings then
display a message indicating unstable weight values were used. This message must be acknowledged to save
the values.
6.
Repeat steps 3 and 4 for test load 2 if enabled by linearity adjustment.
7.
If the capture span operation was successful, a verification message that reads “Capture Span OK” displays If
the capture span operation was not successful, an error message that reads “Calibration Failure” displays. If
the calibration fails, repeat the capture span procedures. If the calibration continues to fail, contact a local
OHAUS CORPORATION representative for assistance.
8.
Press the
LEFT
navigation key to return to the Calibration screen.
Analog Saturation Test
During the calibration process, the T72XW will determine if there is a potential for analog section saturation. The
T72XW will compare the available number of counts with the captured span to confirm that the desired capacity is
achievable. If the potential exists to saturate the analog section before system capacity is reached, the T72XW will
display a warning message and recommendation that the system be recalibrated with a new, lower, capacity.
Figure 3-10: Analog Saturation Warning
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