How to adjust the sensitivity of the electronic balance

Under normal circumstances, the electronic balance completes the debugging and correction of the sensitivity of the electronic balance through the internal school button or the external school. When the internal calibration weight value of the electronic balance is inaccurate due to overhaul, etc., the internal calibration weight value should be rewritten, that is, the sensitivity of the calibration balance (there should be a high-precision standard weight).

Generally, it should be done from the following steps:

1. The balance should be leveled and the program switch of the balance turned on.

2. Turn on the balance and make the balance display the zero position steadily.

3. Press and hold the TARE button and hold it, the balance shows “BUSYCAL and value (corrected weight value)”.

4. Place a correction weight equal to the value displayed on the third point on the balance pan. The correction weight should be less than 2% of the error. If the tolerance is exceeded, a "positive sign" or a "negative sign" will be displayed on the display. "Positive" means to increase the weight value; otherwise "negative" to reduce the weight value, the balance shows "BUSYCAL" and the correction weight value.

5. The “g” symbol appears on the balance display and is accompanied by an audible signal.

6. Remove the adjustment weight and display the zero level at a later time.

7. Turn off the balance and the display shows “STANDBY”.

8. Press the “CAL” button with one hand and press the button for the other hand. The balance will display until “CH4”.

9. Press the tare button again and the balance displays “CH4CAL”.

10. Release the “CAL” button and the balance displays “BUSYGAL” and “0.0000g”.

11. The balance shows "0.0000gCAL"

12. Press the “CAL” button once and the balance will display “BUSYCALC”.

13. Wait until "BUSYCALCC" is displayed.

14. Wait for the balance to display the zero position.

15. If the balance is newly installed with a parameter "EEPROM" memory, repeat steps 12 through 14 again.

16. Call up the balance program page 4 and the display will show “41A or 42” in a loop.

17. When the program code 42 appears on the display, press the balance tare button to make the balance setting program "42â–²".

18. When the last digit of the program code is zero, press the Tare button to return the balance to the zero position of the weighing program.

19. Restore the balance's program switch to the locked position.

Note that when there is no very high precision external calibration weight, please do not do this work, otherwise the stored data will be lost and affect the accuracy of the balance.

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