OHAUS Ranger Counting Scale, Руководство по эксплуатации

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5.2 Calibration
NOTE : If the scale is sealed and is used for legal for trade, the seal must be
removed to gain access to the unlock switch located underneath the scale in
order to calibrate the scale. Refer to paragraph 5.3.
Access the menu by pressing and holding the G/N/T Menu button. The
calibration menu by pressing G/N/T Menu again SPAN is displayed. You
have a choice of calibrating the scale using span or linearity methods. If
you press the
PRINT UNITS button, you can access linearity calibration.
Span calibration requires two points zero and full span. Linearity requires
three points. zero, mid-range and full span.
Span
Press G/N/T Menu button, -0- is displayed followed by mass value to be
placed on the platform. For example, a 3kg scale would normally require
3kg for a span calibration. By pressing the PRINT UNITS button repeatedly,
a lesser value mass can be used. For example, a 3kg scale offers 2kg,
1.5kg, 1.2kg. 1kg, 0.9kg, 0.8kg and 0.7kg for full span.
Place the indicated mass on the platform and press the G/N/T MENU button.
If the calibration was successful, data is saved automatically. Remove
calibration masses from platform.
Linearity
When performing a linearity calibration, -0- is first displayed followed by the
first mass and then a second mass.
5.3 Unlocking the menus
Low Capacity Scale
If it necessary to recalibrate a scale which has been set up for legal for trade
use, or if the menu is locked, you will have to remove the seal at the bottom
of the scale to gain access to the unlock switch.
To unlock the menus, turn the scale off .
On low capacity scales, remove the existing seal and four cover screws from
the bottom of the scale. You will have to unscrew the feet to access the
screws.
Position the scale so the bottom is accessible.
NOTE : Do the next step carefully.
First, press and hold the unlock switch then, briefly press the ON/ZERO OFF
switch at the same time, release the unlock switch after the segment test is
displayed. The menus are now unlocked and settings can be changed.
LOW CAPACITY SCALE
UNLOCK SWITCH