APPENDIX B SERVICE CALIBRATION
Ohaus Corporation www.ohaus.com
B-2
Valor
™ 2000/4000 Series Service Manual
B.3 Ramp Menu
When
ramMp
appears, press
YES
to accept the Ramp menu, or
No
to
advance to the Expand menu item.
The Ramp value is displayed as a percent of the A/D range.
Press
YES
to advance to the Service Linearity Calibration menu item.
Note:
Ramp is used to troubleshoot load cell problems. 0% represents
no signal from the A/D, 100% reflects the upper signal range of the
A/D.
ramMp
0.0
to
100.0
B.4 Service Linearity Calibration
This calibration method uses three points. The full-calibration point is
established with a weight on the scale. The mid-calibration point is
established with a weight equal to half of the full calibration weight on
the scale. The zero calibration point is established with no weight on
the scale. The mid-calibration points cannot be altered by the user
during the calibration procedure.
When
LIN
appears, press YES to accept the Service Linearity
Calibration menu, or No to advance to the Ramp menu item.
LIN
0
flashes. The
kg
LED is lit to indicate the calibration unit.
With no weight on the pan, press
Yes
to establish the zero point.
(Outlined characters represent a flashing display.)
- - C - -
flashes while the zero point is established.
--C--
The mid calibration point value flashes. The
kg
LED is lit to indicate the
calibration unit. (The example shows the mid calibration point value for
a Scale Capacity of 3 kg.)
Place the specified calibration weight on the pan and press
Yes
.
- - C - -
flashes while the mid point is established.
--C--
- - C - -
flashes while the full point is established.
--C--
If linearity calibration was successful, the scale will exit the service
menu and enter weighing mode.
(The example shows a 3 kg span weight on the pan.)
3.000
If linearity calibration was successful,
SpaN
appears.
Press
YES
to enter the Service Span Calibration menu or
or
NO
to advance to the next menu item.
SPAN
Summary of Contents for VALOR 4000
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