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 calibration menu 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 calibra-
tion requires two points zero and full span. Linearity requires three points.
zero, mid-range and full 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, the calibration mass value and DONE
is displayed and the calibration data is saved automatically. Remove
calibration masses from platform.
When performing a linearity calibration, -0- is first displayed followed by
the first mass and then a second mass. As with span calibration, you
are offered a choice of lesser weights to be used for calibration
CAL
SPAn
Lin
End CAL
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 Locset menu is ON, 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