Brecknell B140 Mode D'emploi page 23

4 Calibration
You should periodically calibrate your scale to ensure accuracy. Follow these steps to
calibrate the scale.
Before a two-point calibration (zero and span) you should have on hand at least 10%
of the scale capacity in standard test weights. 100% of capacity is best. You should
have at least 20% of scale capacity if zero-point and two span points are selected to be
calibrated. Again, 100% of capacity is best.
Set the calibration switch to the ON position for calibrating. The switch is located on the
bottom of the scale in a round depression in the base. Push the slide switch, shown in
Figure
You can escape the calibration procedure at any time by pressing the ON/OFF key.
1.
2.
B140 Counting Scale User Instructions
4.1, to the position shown for calibration mode.
Figure 4.1 Calibration switch
To enter calibration mode, while in normal weighing mode, press and hold the
PT2 and ON/OFF keys at the same time until ...
The scale beeps and, if the calibration switch is in the ON position, the
PIECE WEIGHT window shows CAL. ON. If the display shows
CAL.OFF, change the calibration switch position.
The COUNT window shows Unit. 1 or UNit. 0. If Unit. 1 is displayed, the
calibration unit of measure is pounds. If UNit. 0 is displayed, the
calibration unit of measure is kilograms.
Press the Units key to toggle between pounds and kilograms. When the unit
you want is displayed, press the Enter key to accept it ...
The scale beeps and UNLd is displayed in the COUNT window. A
number representing raw A to D counts is displayed in the WEIGHT
window.
SeeFigure 4.1.
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