9 
Calibration. 
 
 
 
External Calibration: 
— 
Only possible with an accurate calibration weight  
(U 4100, U 4100 Sand U 4800 P-2,000 g;  
U 5000 D, U 6100, U 6100 D and U 61OO.S -5,000 g) 
Please refer to the "Accessories." 
 
Clear the pan and press the CAL key (6) (for the U 6100 S use 
the tare control (8)) for at least three seconds until the calibra-
tion weight readout appears in the display. 
 
 
 
 
 
 
 
Center the calibration weights on the pan. 
 
 
Now the weight unit symbol is displayed. An acoustic Signal in-
dicates the end of the calibration procedure. 
 
 
 
 
 
 
 
 
 
 
 
 
 
Internal Calibration: 
(onlyfortheU6100S) 
Unload the balance and zero the display. Press the CAL key (6) 
as soon as the display shows a zero readout. "C" will now be 
displayed. lf “CE" is displayed instead, zero the display by 
pressing the tare control and press the CAL key again. 
 
After a few seconds, "CC" will be displayed followed by 0.00 g. 
An acoustic Signal indicates the end of the calibration proce-
dure. 
 
You can block access to both the internal and external calibra-
tion functions-to find these menu codes, refer to the "Balance 
Operating Program." These functions are accessible when ever 
the balance operating program is unlocked by the menu access 
switch (4).