Hanna Instruments HI 903 - Manual (Page 55)

4-5
GENERAL OPTIONS
4.3 Beeper
This screen allows the user to turn the Beeper On ( Enable ) or Off ( Disable ).
The beeper will sound after a titration is completed, when an invalid key is pressed or when
a critical error occurs during titration.
4.4 Stirrer
This screen allows the user to select the internal magnetic stirrer, an external magnetic stirrer
or a user-controlled stirrer uncontrolled by the titrator (custom).
The external stirrer is automatically detected when it is connected.
Note: When the external stirrer is not connected the key is not available for the
“External” stirrer option.