Bacharach CS100 Calibration Instructions

CS 100 Charging Scale (P/N 2010-0000)

Calibration Instructions

Instruction 2010-9000

Rev. 0 – June 2006

This instruction sheet contains two calibration procedures for the CS 100 Charging Scale. Look at
Figures A and B, and then perform the appropriate procedure.

If the display case of your scale
looks like Figure A, then
perform the Calibration
Procedure for TYPE “A”
Charging Scales.

Figure A

If the display case of your scale

looks like Figure B, then
perform the Calibration
Procedure for TYPE “B”
Charging Scales.

Figure B

Calibration Procedure for TYPE “A” Charging Scales

NOTE 1: IMPORTANT, PLEASE NOTE! Calibration MUST be performed using an 80 kg (176.4 lb)

weight standard with an accuracy of ±0.057 kg (±1/8 lb). No other weight is acceptable!

NOTE 2: If an error occurs at any time during calibration, turn the unit OFF and remove the battery
for at least 20 seconds.

1. Press the ON key and then immediately press the UNIT and TARE keys together. The unit will
not progress through the segment check routine, but will display “SET-1.” If the unit enters the
segment check routine, then turn the unit OFF and start over.

2. Press UNIT. The text “SET-11” will appear.

3. Press UNIT again. A number within the range of 5000 to 6500 should appear. If the displayed
number does not fall within that range, then open the display case and adjust VR1 (100K
potentiometer on the circuit board) until the displayed number falls within the specified range.

4. Press TARE. The text “ZERO” will flash at the bottom left of the display.

5. Apply calibration weight. Refer to NOTE 1 above.

6. Press UNIT. The text “TARE” will flash at the bottom left of the display.

7. Press the UNIT and TARE buttons together. The unit must progress through the segment check
routine, and then display “0.000” and the text “ZERO” at the bottom left of the display. Repeat
this step if necessary.

8. Remove calibration weight. The display MUST show a value of –80 ±0.2 kg. If not, refer to
NOTE 2 above and re-perform this procedure starting at Step 1.

9. Press the UNIT and TARE buttons together.

10. Press TARE. The display should show “0.000” along with the text “ZERO” at the bottom left
of the display.

11. Place any known test weight on the scale to verify calibration. Remember to press the UNIT
button for correct unit of measure for the weight applied.

12. This completes the calibration procedure. Press OFF.

Calibration Procedure for TYPE “B” Charging Scales

NOTE 1: IMPORTANT, PLEASE NOTE! Calibration must be performed using a calibrated or known

weight standard of between 4.5 and 100 kg (10 and 220 lb) with an accuracy of ±0.057 kg (±1/8 lb).

NOTE 2: If an error occurs at any time during calibration, turn the unit OFF and remove the battery for at
least 20 seconds.

1. Press and hold the UNIT and TARE buttons. While holding both of those buttons, press the ON
button and release it while continuing to hold both the UNIT and TARE buttons. Hold both
buttons until the text “SET-1” appears.

2. Press UNIT. The text “SET-11” will appear.

3. Press UNIT again. The text “CAL” will appear for a short period of time, followed by a number
that should fall within the range of 5000 to 6500. If the displayed number does not fall within that
range, then open the display case (2 screws visible on the back, and 2 screws accessed by removing
the battery door) and adjust VR1 (100K potentiometer on the circuit board) until the displayed
number falls within the specified range.

4. Press TARE. The text “ZERO” will appear in the bottom left of the display.

5. Place weight standard on the platform. Refer to NOTE 1 above.

6. Press UNIT. The text “GOOD” should appear for a short period of time.

7. A number will then appear on the screen with its rightmost digit flashing. Enter the weight of the
calibration standard by using the TARE button to adjust the value of the digits and the UNIT
button to move between digits.

IMPORTANT! The weight of the standard must be entered in kilograms. To convert
pounds to kilograms, multiply by a factor 0.45. (For example: 20 lb x 0.45 = 9 kg.)

8. After the correct value has been entered, press and hold the UNIT and TARE buttons
simultaneously until the text “GOOD” appears followed by the text “SET-12.” Turn the unit OFF
and remove the standard weight. The scale is now calibrated.

9. Turn the unit back ON and place any known test weight on the scale to verify calibration.
Remember to press the UNIT button for correct unit of measure for the weight applied.

10. This completes the calibration procedure. Press OFF.

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