Ohaus CW-11 Indicator - Manual (Page 25)

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CW-11 Indicator
3.CALIBRATION AND SEALING
Model CW-11 Indicator requires span calibration before using. Span calibration ensures that the Indicator
reads correctly within specifications using weight values from about 20% to 100% of capacity. For best
results, calibrate at or near full capacity. Calibration unit can be set to either kg or lb.
NOTE: When the Indicator is used in Legal for trade applications, the calibration menu is locked out and
is not accessable. This is to prevent unauthorized personnel from changing calibration. Before beginning
calibration, make sure masses are available. If you begin calibration and realize calibration masses are not
available, exit the menu. The Indicator will retain previously stored calibration data. Calibration should be
performed as necessary to ensure accurate weighing. Masses required to perform the procedures should be
in compliance with the requirements of the scale base being used with the Indicator. You have a choice of
either span or linearity calibration. Span calibration checks zero and full span calibration points. Linearity
calibration checks zero, mid span and full span points.
Procedure
SPAN CALIBRATION
With the Indicator ON, press and hold the button
G/N/T/MENU until MENU is displayed. When you
release the G/N/T/MENU button, CAL is displayed.
Press G/N/T/MENU button, SPAN Y is displayed.
Press G/N/T/MENU button, -C- is displayed. The
scale base MUST be stable during this period and is
establishing a zero point. After a few seconds, the
requested weight value is displayed. The sampleil-
lustration indicates a 10kg scale. (Cal Point CP
was set for 10kg)
Place the indicated mass on the platform. Keep the
platform stable during this period.
Press G/N/T/MENU button, -C- is displayed while
the Indicator stores the reading and then displays
the weight of the mass.
If the calibration was successful, the calibration
mass is displayed and the calibration data is saved
automatically. If unsuccessful, refer to the trouble-
shooting section.
Remove calibration masses from platform.
Gross
Brutto
k g
NOTE: If the Indicator is to be used for legal for trade applications, it must be calibrated and the jumper removed
from the CAL connector in order to lock out the menus. The top cover of the Indicator should be free to gain
access to the CAL jumper. Refer to paragraph 3.1 for sealing for legal for trade use.
k g
*